#!/usr/bin/bash

set -e

ONLY=${ONLY:-"$*"}

SRCDIR=$(dirname $0)
PTLDEBUG=${PTLDEBUG:--1}
export FORCE_TEST_111=${FORCE_TEST_111:-false}

LUSTRE=${LUSTRE:-$(dirname $0)/..}
. $LUSTRE/tests/test-framework.sh
init_test_env "$@"
. $LUSTRE/tests/conf-sanity-framework.sh

init_logging

#                                  tool to create lustre filesystem images
ALWAYS_EXCEPT="$CONF_SANITY_EXCEPT 32newtarball"

if $SHARED_KEY; then
	always_except LU-9795 84 86 103
fi

if ! combined_mgs_mds; then
	always_except LU-11991 32a 32b 32c 32d 32e
	always_except LU-9897 84
	always_except LU-12032 123F
fi

#                                     8  22  40 165  (min)
[ "$SLOW" = "no" ] && EXCEPT_SLOW="45 69 106 111 114"

if [[ "$mds1_FSTYPE" == "zfs" ]]; then
	always_except LU-18652 108a 112a 112b 113 117 119 121 122a
	always_except LU-18652 123aa 123ab 123ac 123ad 123ae 123af 123ag 123ah 123ahi
	always_except LU-18652 123F 123G 123H 126 129 132 133 135 136 137 150 152 153a 153b 153c 155 802a
fi

build_test_filter

# use small MDS + OST size to speed formatting time
# do not use too small MDSSIZE/OSTSIZE, which affect the default journal size
# STORED_MDSSIZE is used in test_18

fs2mds_HOST=$mds_HOST
fs2ost_HOST=$ost_HOST
fs3ost_HOST=$ost_HOST

MDSDEV1_2=$fs2mds_DEV
OSTDEV1_2=$fs2ost_DEV
OSTDEV2_2=$fs3ost_DEV

# pass "-E lazy_itable_init" to mke2fs to speed up the formatting time
if [[ "$LDISKFS_MKFS_OPTS" != *lazy_itable_init* ]]; then
	LDISKFS_MKFS_OPTS=$(csa_add "$LDISKFS_MKFS_OPTS" -E lazy_itable_init)
fi

#
require_dsh_mds || exit 0
require_dsh_ost || exit 0

assert_DIR

if [ "$ONLY" == "setup" ]; then
	setup
	exit
fi

if [ "$ONLY" == "cleanup" ]; then
	cleanup
	exit
fi

init_gss

#create single point mountpoint

reformat_and_config

test_0() {
	setup
	check_mount || error "check_mount failed"
	cleanup || error "cleanup failed with $?"
}
run_test 0 "single mount setup"

test_1() {
	start_mds || error "MDS start failed"
	start_ost || error "unable to start OST"
	echo "start ost second time..."
	start_ost && error "2nd OST start should fail"
	mount_client $MOUNT || error "client start failed"
	check_mount || error "check_mount failed"
	cleanup || error "cleanup failed with $?"
}
run_test 1 "start up ost twice (should return errors)"

test_2() {
	start_mds || error "MDT start failed"
	echo "start mds second time.."
	start_mds && error "2nd MDT start should fail"
	start_ost || error "OST start failed"
	mount_client $MOUNT || error "mount_client failed to start client"
	check_mount || error "check_mount failed"
	cleanup || error "cleanup failed with $?"
}
run_test 2 "start up mds twice (should return err)"

test_3() {
	setup
	#mount.lustre returns an error if already in mtab
	mount_client $MOUNT && error "2nd client mount should fail"
	check_mount || error "check_mount failed"
	cleanup || error "cleanup failed with $?"
}
run_test 3 "mount client twice (should return err)"

test_4() {
	setup
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	stop_ost || error "Unable to stop OST1"
	umount_client $MOUNT -f || error "unmount $MOUNT failed"
	cleanup_nocli
	eno=$?
	# ok for ost to fail shutdown
	if [ 202 -ne $eno ] && [ 0 -ne $eno ]; then
		error "cleanup failed with $?"
	fi
}
run_test 4 "force cleanup ost, then cleanup"

test_5a() {	# was test_5
	setup
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	fuser -m -v $MOUNT && echo "$MOUNT is in use by user space process."

	stop_mds || error "Unable to stop MDS"

	# cleanup may return an error from the failed
	# disconnects; for now I'll consider this successful
	# if all the modules have unloaded.
	$UMOUNT -f $MOUNT &
	UMOUNT_PID=$!
	sleep 6
	echo "killing umount"
	kill -TERM $UMOUNT_PID
	echo "waiting for umount to finish"
	wait $UMOUNT_PID
	if grep " $MOUNT " /proc/mounts; then
		echo "test 5: /proc/mounts after failed umount"
		umount -f $MOUNT &
		UMOUNT_PID=$!
		sleep 2
		echo "killing umount"
		kill -TERM $UMOUNT_PID
		echo "waiting for umount to finish"
		wait $UMOUNT_PID
		grep " $MOUNT " /proc/mounts &&
			error "/proc/mounts after second umount"
	fi

	# manual_mount_client may fail due to umount succeeding above
	manual_umount_client
	# stop_mds is a no-op here, and should not fail
	cleanup_nocli || error "cleanup_nocli failed with $?"
	# df may have lingering entry
	manual_umount_client
	# mtab may have lingering entry
	local WAIT=0
	local MAX_WAIT=20
	local sleep=1
	while [ "$WAIT" -ne "$MAX_WAIT" ]; do
		sleep $sleep
		grep -q $MOUNT" " /etc/mtab || break
		echo "Waiting /etc/mtab updated ... "
		WAIT=$(( WAIT + sleep))
	done
	[ "$WAIT" -eq "$MAX_WAIT" ] &&
		error "/etc/mtab is not updated in $WAIT secs"
	echo "/etc/mtab updated in $WAIT secs"
}
run_test 5a "force cleanup mds, then cleanup"

cleanup_5b () {
	trap 0
	start_mgs
}

test_5b() {
	grep " $MOUNT " /etc/mtab &&
		error false "unexpected entry in mtab before mount" && return 10

	start_ost || error "OST start failed"
	if ! combined_mgs_mds ; then
		trap cleanup_5b EXIT ERR
		start_mds || error "MDS start failed"
		stop mgs
	fi

	mount_client $MOUNT && error "mount_client $MOUNT should fail"
	grep " $MOUNT " /etc/mtab &&
		error "$MOUNT entry in mtab after failed mount"
	umount_client $MOUNT
	# stop_mds is a no-op here, and should not fail
	cleanup_nocli || error "cleanup_nocli failed with $?"
	if ! combined_mgs_mds ; then
		cleanup_5b
	fi
}
run_test 5b "Try to start a client with no MGS (should return errs)"

test_5c() {
	grep " $MOUNT " /etc/mtab &&
		error false "unexpected entry in mtab before mount" && return 10

	start_mds || error "MDS start failed"
	start_ost || error "OST start failed"
	local oldfs="${FSNAME}"
	FSNAME="wrong.${FSNAME}"
	mount_client $MOUNT || :
	FSNAME=${oldfs}
	grep " $MOUNT " /etc/mtab &&
		error "$MOUNT entry in mtab after failed mount"
	umount_client $MOUNT
	cleanup_nocli || error "cleanup_nocli failed with $?"
}
run_test 5c "cleanup after failed mount (bug 2712) (should return errs)"

test_5d() {
	grep " $MOUNT " /etc/mtab &&
		error "unexpected entry in mtab before mount"

	start_ost || error "OST start failed"
	start_mds || error "MDS start failed"
	stop_ost -f || error "Unable to stop OST1"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	umount_client $MOUNT -f || error "umount_client $MOUNT failed"
	cleanup_nocli || error "cleanup_nocli failed with $?"
	! grep " $MOUNT " /etc/mtab ||
		error "$MOUNT entry in mtab after unmount"
}
run_test 5d "mount with ost down"

test_5e() {
	grep " $MOUNT " /etc/mtab &&
		error false "unexpected entry in mtab before mount" && return 10

	start_mds || error "MDS start failed"
	start_ost || error "OST start failed"

	#define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
	do_facet client "$LCTL set_param fail_loc=0x80000506"
	mount_client $MOUNT || echo "mount failed (not fatal)"
	cleanup || error "cleanup failed with $?"
	grep " $MOUNT " /etc/mtab &&
		error "$MOUNT entry in mtab after unmount"
	pass
}
run_test 5e "delayed connect, don't crash (bug 10268)"

test_5f() {
	combined_mgs_mds && skip "needs separate mgs and mds"

	grep " $MOUNT " /etc/mtab &&
		error false "unexpected entry in mtab before mount" && return 10

	local rc=0
	start_ost || error "OST start failed"
	mount_client $MOUNT &
	local pid=$!
	echo client_mount pid is $pid

	sleep 5

	if ! ps -f -p $pid >/dev/null; then
		wait $pid
		rc=$?
		grep " $MOUNT " /etc/mtab && echo "test 5f: mtab after mount"
		error "mount returns $rc, expected to hang"
		rc=11
		cleanup || error "cleanup failed with $?"
		return $rc
	fi

	# start mds
	start_mds || error "start MDS failed"

	# mount should succeed after start mds
	wait $pid
	grep " $MOUNT " /etc/mtab && echo "test 5f: mtab after mount"
	cleanup || error "final call to cleanup failed with rc $?"
}
run_test 5f "mds down, cleanup after failed mount (bug 2712)"

test_5g() {
	load_modules
	[ "$CLIENT_VERSION" -lt $(version_code 2.9.53) ] &&
		skip "automount of debugfs missing before 2.9.53"
	umount /sys/kernel/debug
	$LCTL get_param -n devices | grep -E -v "error" &&
		error "lctl can't access debugfs data"
	grep " debugfs " /etc/mtab || error "debugfs failed to remount"
}
run_test 5g "handle missing debugfs"

test_5h() {
	(( $MDS1_VERSION >= $(version_code 2.12.54) )) ||
		skip "Need MDS version at least 2.12.54"

	setup

	stop mds1
	#define OBD_FAIL_MDS_FS_SETUP            0x135
	do_facet mds1 "$LCTL set_param fail_loc=0x80000135"
	start_mdt 1 && error "start mdt should fail"
	start_mdt 1 || error "start mdt failed"
	client_up || error "client_up failed"
	cleanup
}
run_test 5h "start mdt failure at mdt_fs_setup()"

test_5i() {
	(( $MDS1_VERSION >= $(version_code 2.12.54) )) ||
		skip "Need MDS version at least 2.12.54"

	setup

	stop mds1
	#define OBD_FAIL_QUOTA_INIT              0xA05
	do_facet mds1 "$LCTL set_param fail_loc=0x80000A05"
	start_mdt 1 && error "start mdt should fail"
	start_mdt 1 || error "start mdt failed"
	client_up || error "client_up failed"
	cleanup
}
run_test 5i "start mdt failure at mdt_quota_init()"

test_5j() {
	unload_modules
	load_module ../libcfs/libcfs/libcfs ||
		error "Failed to load modules libcfs rc = $?"
	$LCTL set_param debug=all
	rmmod -v libcfs
}
run_test 5j "verify libcfs doesn't crash when setting debug flags"

test_6() {
	setup
	manual_umount_client
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	cleanup || error "cleanup failed with rc $?"
}
run_test 6 "manual umount, then mount again"

test_7() {
	setup
	manual_umount_client
	cleanup_nocli || error "cleanup_nocli failed with $?"
}
run_test 7 "manual umount, then cleanup"

test_8() {
	setup
	mount_client $MOUNT2 || error "mount_client $MOUNT2 failed"
	check_mount2 || error "check_mount2 failed"
	umount_client $MOUNT2 || error "umount_client $MOUNT2 failed"
	cleanup || error "cleanup failed with rc $?"
}
run_test 8 "double mount setup"

test_9() {
	start_ost || error "OST start failed"

	do_facet ost1 $LCTL set_param debug=\'inode trace\' ||
		error "do_facet ost1 set_param inode trace failed."
	do_facet ost1 $LCTL set_param subsystem_debug=\'mds ost\' ||
		error "do_facet ost1 set_param debug mds ost failed."

	CHECK_PTLDEBUG="`do_facet ost1 $LCTL get_param -n debug`"
	if [ "$CHECK_PTLDEBUG" ] && { \
	   [ "$CHECK_PTLDEBUG" = "trace inode warning error emerg console" ] ||
	   [ "$CHECK_PTLDEBUG" = "trace inode" ]; }; then
		echo "lnet.debug success"
	else
		error "lnet.debug: want 'trace inode', have '$CHECK_PTLDEBUG'"
	fi
	CHECK_SUBSYS="`do_facet ost1 $LCTL get_param -n subsystem_debug`"
	if [ "$CHECK_SUBSYS" ] && [ "$CHECK_SUBSYS" = "mds ost" ]; then
		echo "lnet.subsystem_debug success"
	else
		error "lnet.subsystem_debug: want 'mds ost' got '$CHECK_SUBSYS'"
	fi
	stop_ost || error "Unable to stop OST1"
}
run_test 9 "test ptldebug and subsystem for mkfs"

test_10a() {
	setup

	if ! combined_mgs_mds; then
		files=$(do_facet mgs "find /{proc/fs,sys/fs,sys/kernel/debug}/lustre -type l -exec test ! -e {} \; -print")
		[ -z $files ] || echo "MGS $files is a broken symlink"
	fi

	files=$(do_facet mds1 "find /{proc/fs,sys/fs,sys/kernel/debug}/lustre -type l -exec test ! -e {} \; -print")
	[ -z $files ] || echo "MDS $files is a broken symlink"

	files=$(do_facet ost1 "find /{proc/fs,sys/fs,sys/kernel/debug}/lustre -type l -exec test ! -e {} \; -print")
	[ -z $files ] || echo "OSS $files is a broken symlink"

	files=$(do_facet client "find /{proc/fs,sys/fs,sys/kernel/debug}/lustre -type l -exec test ! -e {} \; -print")
	[ -z $files ] || echo "clients $files is a broken symlink"

	cleanup || error "cleanup failed with rc $?"
}
run_test 10a "find lctl param broken symlinks"

#
# Test 16 was to "verify that lustre will correct the mode of OBJECTS".
# But with new MDS stack we don't care about the mode of local objects
# anymore, so this test is removed. See bug 22944 for more details.
#

test_17() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	setup
	check_mount || error "check_mount failed"
	cleanup || error "cleanup failed with rc $?"

	echo "Remove mds config log"
	if ! combined_mgs_mds ; then
		stop mgs
	fi

	do_facet mgs "$DEBUGFS -w -R 'unlink CONFIGS/$FSNAME-MDT0000' \
		      $(mgsdevname) || return \$?" ||
		error "do_facet mgs failed with $?"

	if ! combined_mgs_mds ; then
		start_mgs
	fi

	start_ost || error "OST start failed"
	start_mds && error "MDS start succeeded, but should fail"
	reformat_and_config
}
run_test 17 "Verify failed mds_postsetup won't fail assertion (2936) (should return errs)"

test_18() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})

	local MIN=2000000

	local OK=
	# check if current MDSSIZE is large enough
	[ $MDSSIZE -ge $MIN ] && OK=1 && myMDSSIZE=$MDSSIZE &&
		log "use MDSSIZE=$MDSSIZE"

	# check if the global config has a large enough MDSSIZE
	[ -z "$OK" -a ! -z "$STORED_MDSSIZE" ] &&
		[ $STORED_MDSSIZE -ge $MIN ] &&
		OK=1 && myMDSSIZE=$STORED_MDSSIZE &&
		log "use STORED_MDSSIZE=$STORED_MDSSIZE"

	# check if the block device is large enough
	is_blkdev $SINGLEMDS $MDSDEV $MIN
	local large_enough=$?
	if [ -n "$OK" ]; then
		[ $large_enough -ne 0 ] && OK=""
	else
		[ $large_enough -eq 0 ] && OK=1 && myMDSSIZE=$MIN &&
			log "use device $MDSDEV with MIN=$MIN"
	fi

	# check if a loopback device has enough space for fs metadata (5%)

	if [ -z "$OK" ]; then
		local SPACE=$(do_facet $SINGLEMDS "[ -f $MDSDEV -o ! \
			      -e $MDSDEV ] && df -P \\\$(dirname $MDSDEV)" |
			awk '($1 != "Filesystem") { print $4 }')
		! [ -z "$SPACE" ] && [ $SPACE -gt $((MIN / 20)) ] &&
			OK=1 && myMDSSIZE=$MIN &&
			log "use file $MDSDEV with MIN=$MIN"
	fi

	[ -z "$OK" ] && skip_env "$MDSDEV too small for ${MIN}kB MDS"

	echo "mount mds with large journal..."

	local OLD_MDSSIZE=$MDSSIZE
	MDSSIZE=$myMDSSIZE

	reformat_and_config
	echo "mount lustre system..."
	setup
	check_mount || error "check_mount failed"

	echo "check journal size..."
	local FOUNDSIZE=$(do_facet $SINGLEMDS "$DEBUGFS -c -R 'stat <8>' $MDSDEV" | awk '/Size: / { print $NF; exit;}')
	if [ $FOUNDSIZE -gt $((32 * 1024 * 1024)) ]; then
		log "Success: mkfs creates large journals. Size: $((FOUNDSIZE >> 20))M"
	else
		error "expected journal size > 32M, found $((FOUNDSIZE >> 20))M"
	fi

	cleanup || error "cleanup failed with rc $?"

	MDSSIZE=$OLD_MDSSIZE
	reformat_and_config
}
run_test 18 "check mkfs creates large journals"

test_19a() {
	start_mds || error "MDS start failed"
	stop_mds || error "Unable to stop MDS"
}
run_test 19a "start/stop MDS without OSTs"

test_19b() {
	start_ost || error "Unable to start OST1"
	stop_ost -f || error "Unable to stop OST1"
}
run_test 19b "start/stop OSTs without MDS"

test_20() {
	# first format the ost/mdt
	start_mds || error "MDS start failed"
	start_ost || error "Unable to start OST1"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	check_mount || error "check_mount failed"
	rm -f $DIR/$tfile || error "remove $DIR/$tfile failed."
	mount_client $MOUNT remount,ro || error "remount client with ro failed"
	touch $DIR/$tfile && error "$DIR/$tfile created incorrectly"
	[ -e $DIR/$tfile ] && error "$DIR/$tfile exists incorrectly"
	mount_client $MOUNT remount,rw || error "remount client with rw failed"
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	MCNT=$(grep -c $MOUNT' ' /etc/mtab)
	[ "$MCNT" -ne 1 ] && error "$MOUNT in /etc/mtab $MCNT times"
	umount_client $MOUNT
	stop_mds || error "Unable to stop MDS"
	stop_ost || error "Unable to stop OST1"
}
run_test 20 "remount ro,rw mounts work and doesn't break /etc/mtab"

test_21a() {
	start_mds || error "MDS start failed"
	start_ost || error "unable to start OST1"
	wait_osc_import_state mds ost FULL
	stop_ost || error "unable to stop OST1"
	stop_mds || error "unable to stop MDS"
}
run_test 21a "start mds before ost, stop ost first"

test_21b() {
	start_ost || error "unable to start OST1"
	start_mds || error "MDS start failed"
	wait_osc_import_state mds ost FULL
	stop_mds || error "unable to stop MDS"
	stop_ost || error "unable to stop OST1"
}
run_test 21b "start ost before mds, stop mds first"

test_21c() {
	start_ost || error "Unable to start OST1"
	start_mds || error "MDS start failed"
	start_ost2 || error "Unable to start OST2"
	wait_osc_import_state mds ost2 FULL
	stop_ost || error "Unable to stop OST1"
	stop_ost2 || error "Unable to stop OST2"
	stop_mds || error "Unable to stop MDS"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 21c "start mds between two osts, stop mds last"

test_21d() {
	combined_mgs_mds && skip "need separate mgs device"

	stopall
	reformat

	start_mgs || error "unable to start MGS"
	start_ost || error "unable to start OST1"
	start_ost2 || error "unable to start OST2"
	start_mds || error "MDS start failed"
	wait_osc_import_state mds ost2 FULL

	local zkeeper=${KEEP_ZPOOL}
	stack_trap "KEEP_ZPOOL=$zkeeper" EXIT
	KEEP_ZPOOL="true"

	stop_ost || error "Unable to stop OST1"
	stop_ost2 || error "Unable to stop OST2"
	stop_mds || error "Unable to stop MDS"
	stop_mgs
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
	KEEP_ZPOOL="${zkeeper}"

	start_mgs || error "unable to start MGS"
}
run_test 21d "start mgs then ost and then mds"

cleanup_21e() {
	MGSNID="$saved_mgsnid"
	cleanup_fs2
	echo "stopping fs2mgs ..."
	stop $fs2mgs -f || true
}

test_21e() { # LU-5863
	if [[ -z "$fs3ost_DEV" || -z "$fs2ost_DEV" || -z "$fs2mds_DEV" ]]; then
		is_blkdev $SINGLEMDS $(mdsdevname ${SINGLEMDS//mds/}) &&
		skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs3ostdev=$(ostdevname 2_2)

	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)
	local fs3ostvdev=$(ostvdevname 2_2)

	# temporarily use fs3ost as fs2mgs
	local fs2mgs=fs3ost
	local fs2mgsdev=$fs3ostdev
	local fs2mgsvdev=$fs3ostvdev

	local fsname=test1234

	add $fs2mgs $(mkfs_opts mgs $fs2mgsdev) --fsname=$fsname \
		--reformat $fs2mgsdev $fs2mgsvdev || error "add fs2mgs failed"
	start $fs2mgs $fs2mgsdev $MGS_MOUNT_OPTS && trap cleanup_21e EXIT INT ||
		error "start fs2mgs failed"

	local saved_mgsnid="$MGSNID"
	MGSNID=$(do_facet $fs2mgs $LCTL list_nids | xargs | tr ' ' ,)

	add fs2mds $(mkfs_opts mds1 $fs2mdsdev $fsname) \
		--reformat $fs2mdsdev $fs2mdsvdev || error "add fs2mds failed"
	add fs2ost $(mkfs_opts ost1 $fs2ostdev $fsname) \
		--reformat $fs2ostdev $fs2ostvdev || error "add fs2ost failed"

	start fs2ost $fs2ostdev $OST_MOUNT_OPTS || error "start fs2ost failed"
	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS || error "start fs2mds failed"

	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $MGSNID:/$fsname $MOUNT2 || error "mount $MOUNT2 failed"
	DIR=$MOUNT2 MOUNT=$MOUNT2 check_mount || error "check $MOUNT2 failed"

	cleanup_21e
}
run_test 21e "separate MGS and MDS"

test_22() {
	start_mds || error "MDS start failed"

	echo "Client mount with ost in logs, but none running"
	start_ost || error "unable to start OST1"
	# wait until mds connected to ost and open client connection
	wait_osc_import_state mds ost FULL
	stop_ost || error "unable to stop OST1"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	# check_mount will block trying to contact ost
	mcreate $DIR/$tfile || error "mcreate $DIR/$tfile failed"
	rm -f $DIR/$tfile || error "remove $DIR/$tfile failed"
	umount_client $MOUNT -f
	pass

	echo "Client mount with a running ost"
	start_ost || error "unable to start OST1"
	if $GSS; then
		# if gss enabled, wait full time to let connection from
		# mds to ost be established, due to the mismatch between
		# initial connect timeout and gss context negotiation timeout.
		# This perhaps could be remove after AT landed.
		echo "sleep $((TIMEOUT + TIMEOUT + TIMEOUT))s"
		sleep $((TIMEOUT + TIMEOUT + TIMEOUT))
	fi
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	wait_osc_import_state mds ost FULL
	wait_osc_import_ready client ost
	check_mount || error "check_mount failed"
	pass

	cleanup || error "cleanup failed with rc $?"
}
run_test 22 "start a client before osts (should return errs)"

test_23a() {	# was test_23
	setup
	# fail mds
	stop $SINGLEMDS || error "failed to stop $SINGLEMDS"
	# force down client so that recovering mds waits for reconnect
	local running=$(grep -c $MOUNT /proc/mounts) || true
	if [ $running -ne 0 ]; then
		echo "Stopping client $MOUNT (opts: -f)"
		umount -f $MOUNT
	fi

	# enter recovery on failed mds
	local MDT_DEV=$(mdsdevname ${SINGLEMDS//mds/})
	start $SINGLEMDS $MDT_DEV $MDS_MOUNT_OPTS || error "MDS start failed"
	# try to start a new client
	mount_client $MOUNT &
	sleep 5
	MOUNT_PID=$(ps -ef | grep "t lustre" | grep -v grep | awk '{print $2}')
	MOUNT_LUSTRE_PID=$(ps -ef | grep mount.lustre |
			   grep -v grep | awk '{print $2}')
	echo mount pid is ${MOUNT_PID}, mount.lustre pid is ${MOUNT_LUSTRE_PID}
	ps --ppid $MOUNT_PID
	ps --ppid $MOUNT_LUSTRE_PID
	echo "waiting for mount to finish"
	ps -ef | grep mount
	# "ctrl-c" sends SIGINT but it usually (in script) does not work on child process
	# SIGTERM works but it does not spread to offspring processses
	kill -s TERM $MOUNT_PID
	kill -s TERM $MOUNT_LUSTRE_PID
	# we can not wait $MOUNT_PID because it is not a child of this shell
	local PID1
	local PID2
	local WAIT=0
	local MAX_WAIT=30
	local sleep=1
	while [ "$WAIT" -lt "$MAX_WAIT" ]; do
		sleep $sleep
		PID1=$(ps -ef | awk '{print $2}' | grep -w $MOUNT_PID)
		PID2=$(ps -ef | awk '{print $2}' | grep -w $MOUNT_LUSTRE_PID)
		echo PID1=$PID1
		echo PID2=$PID2
		[ -z "$PID1" -a -z "$PID2" ] && break
		echo "waiting for mount to finish ... "
		WAIT=$(( WAIT + sleep))
	done
	if [ "$WAIT" -eq "$MAX_WAIT" ]; then
		error "MOUNT_PID $MOUNT_PID and "\
		"MOUNT_LUSTRE_PID $MOUNT_LUSTRE_PID still not killed in $WAIT secs"
		ps -ef | grep mount
	fi
	cleanup || error "cleanup failed with rc $?"
}
run_test 23a "interrupt client during recovery mount delay"

test_23b() {    # was test_23
	start_mds || error "MDS start failed"
	start_ost || error "Unable to start OST1"
	# Simulate -EINTR during mount OBD_FAIL_LDLM_CLOSE_THREAD
	$LCTL set_param fail_loc=0x80000313
	mount_client $MOUNT
	cleanup || error "cleanup failed with rc $?"
}
run_test 23b "Simulate -EINTR during mount"

test_24a() {
	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})

	if [ -z "$fs2ost_DEV" -o -z "$fs2mds_DEV" ]; then
		is_blkdev $SINGLEMDS $MDSDEV &&
		skip_env "mixed loopback and real device not working"
	fi

	[ -n "$ost1_HOST" ] && fs2ost_HOST=$ost1_HOST

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)
	local cl_user

	# LU-9733 test fsname started with numbers as well
	local FSNAME2=969362ae

	add fs2mds $(mkfs_opts mds1 ${fs2mdsdev} ) --nomgs --mgsnode=$MGSNID \
		--fsname=${FSNAME2} --reformat $fs2mdsdev $fs2mdsvdev || exit 10

	add fs2ost $(mkfs_opts ost1 ${fs2ostdev}) --fsname=${FSNAME2} \
		--reformat $fs2ostdev $fs2ostvdev || exit 10

	setup
	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS && trap cleanup_fs2 EXIT INT
	start fs2ost $fs2ostdev $OST_MOUNT_OPTS
	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $MGSNID:/${FSNAME2} $MOUNT2 || error "$MOUNT_CMD failed"

	# LU-9733 test fsname started with numbers
	cl_user=$(do_facet $SINGLEMDS lctl --device $FSNAME2-MDT0000 \
			changelog_register -n) ||
				error "register changelog failed"

	do_facet $SINGLEMDS lctl --device $FSNAME2-MDT0000 \
			changelog_deregister $cl_user ||
				error "deregister changelog failed"
	# 1 still works
	check_mount || error "check_mount failed"
	# files written on 1 should not show up on 2
	cp /etc/passwd $DIR/$tfile
	sleep 10
	[ -e $MOUNT2/$tfile ] && error "File bleed"
	# 2 should work
	sleep 5
	cp /etc/passwd $MOUNT2/$tfile ||
		error "cp /etc/passwd $MOUNT2/$tfile failed"
	rm $MOUNT2/$tfile || error "remove $MOUNT2/$tfile failed"
	# 2 is actually mounted
	grep $MOUNT2' ' /proc/mounts > /dev/null || error "$MOUNT2 not mounted"
	# failover
	facet_failover fs2mds
	facet_failover fs2ost
	df
	umount_client $MOUNT
	# the MDS must remain up until last MDT
	stop_mds
	MDS=$(do_facet $SINGLEMDS "$LCTL get_param -n devices" |
	      awk '($3 ~ "mdt" && $4 ~ "MDT") { print $4 }' | head -1)
	[ -z "$MDS" ] && error "No MDT"
	cleanup_fs2
	cleanup_nocli || error "cleanup_nocli failed with rc $?"
}
run_test 24a "Multiple MDTs on a single node"

test_24b() {
	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})
	combined_mgs_mds ||
		skip "needs combined MGT and MDT device"

	if [ -z "$fs2mds_DEV" ]; then
		local dev=${SINGLEMDS}_dev
		local MDSDEV=${!dev}
		is_blkdev $SINGLEMDS $MDSDEV &&
		skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)

	add fs2mds $(mkfs_opts mds1 ${fs2mdsdev} ) --mgs --fsname=${FSNAME}2 \
		--reformat $fs2mdsdev $fs2mdsvdev || exit 10
	setup
	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS && {
		cleanup
		error "start MDS should fail"
	}
	stop fs2mds -f
	cleanup || error "cleanup failed with rc $?"
}
run_test 24b "Multiple MGSs on a single node (should return err)"

test_25() {
	setup_noconfig
	check_mount || error "check_mount failed"
	local MODULES=$($LCTL modules | awk '{ print $2 }')
	rmmod $MODULES 2>/dev/null || true
	cleanup || error "cleanup failed with $?"
}
run_test 25 "Verify modules are referenced"

test_26() {
	load_modules
	# we need modules before mount for sysctl, so make sure...
	do_facet $SINGLEMDS "lsmod | grep -q lustre || modprobe lustre"
	#define OBD_FAIL_MDS_FS_SETUP            0x135
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x80000135"
	start_mds && error "MDS started but should not have started"
	$LCTL get_param -n devices
	DEVS=$($LCTL get_param -n devices | grep -E -v MG | wc -l)
	[ $DEVS -gt 0 ] && error "number of devices is $DEVS, should be zero"
	# start mds to drop writeconf setting
	start_mds || error "Unable to start MDS"
	stop_mds || error "Unable to stop MDS"
	unload_modules_conf || error "unload_modules_conf failed with $?"
}
run_test 26 "MDT startup failure cleans LOV (should return errs)"

test_27a() {
	cleanup
	start_ost || error "Unable to start OST1"
	start_mds || error "Unable to start MDS"
	echo "Requeue thread should have started: "
	ps -e | grep ll_cfg_requeue
	set_persistent_param_and_check ost1			\
	   "obdfilter.$FSNAME-OST0000.client_cache_seconds"	\
	   "$FSNAME-OST0000.ost.client_cache_seconds"
	cleanup_nocli || error "cleanup_nocli failed with rc $?"
}
run_test 27a "Reacquire MGS lock if OST started first"

test_27b() {
	# FIXME. ~grev
	setup_noconfig
	local device=$(do_facet $SINGLEMDS "$LCTL get_param -n devices" |
			awk '($3 ~ "mdt" && $4 ~ "MDT0000") { print $4 }')

	facet_failover $SINGLEMDS
	set_persistent_param_and_check $SINGLEMDS	\
		"mdt.$device.identity_acquire_expire"	\
		"$device.mdt.identity_acquire_expire"
	set_persistent_param_and_check client		\
		"mdc.$device-mdc-*.max_rpcs_in_flight"	\
		"$device.mdc.max_rpcs_in_flight"
	check_mount
	cleanup || error "cleanup failed with $?"
}
run_test 27b "Reacquire MGS lock after failover"

test_28A() { # was test_28
	setup_noconfig

	local TEST="llite.$FSNAME-*.max_read_ahead_whole_mb"
	local PARAM="$FSNAME.llite.max_read_ahead_whole_mb"
	local orig=$($LCTL get_param -n $TEST)
	local max=$($LCTL get_param -n \
			llite.$FSNAME-*.max_read_ahead_per_file_mb)

	orig=${orig%%.[0-9]*}
	max=${max%%.[0-9]*}
	echo "ORIG:$orig MAX:$max"
	[[ $max -le $orig ]] && orig=$((max - 3))
	echo "ORIG:$orig MAX:$max"

	local final=$((orig + 1))

	set_persistent_param_and_check client "$TEST" "$PARAM" $final
	final=$((final + 1))
	set_persistent_param_and_check client "$TEST" "$PARAM" $final
	umount_client $MOUNT || error "umount_client $MOUNT failed"
	mount_client $MOUNT || error "mount_client $MOUNT failed"

	local result=$($LCTL get_param -n $TEST)

	if [ $result -ne $final ]; then
		error "New config not seen: wanted $final got $result"
	else
		echo "New config success: got $result"
	fi
	set_persistent_param_and_check client "$TEST" "$PARAM" $orig
	cleanup || error "cleanup failed with rc $?"
}
run_test 28A "permanent parameter setting"

test_28a() { # LU-4221
	[[ "$OST1_VERSION" -ge $(version_code 2.5.52) ]] ||
		skip "Need OST version at least 2.5.52"
	[ "$ost1_FSTYPE" = zfs ] &&
		skip "LU-4221: no such proc params for ZFS OSTs"

	local name
	local param
	local cmd
	local old
	local new
	local device="$FSNAME-OST0000"

	setup_noconfig

	# In this test we will set three kinds of proc parameters with
	# lctl set_param -P or lctl conf_param:
	# 1. non-symlink ones in the OFD
	# 2. non-symlink ones in the OSD

	# Check 1.
	# prepare a non-symlink parameter in the OFD
	name="client_cache_seconds"
	param="$device.ost.$name"
	cmd="obdfilter.$device.$name"

	# permanently setting the parameter in the OFD
	old=$(do_facet ost1 $LCTL get_param -n $cmd)
	new=$((old * 2))
	set_persistent_param_and_check ost1 "$cmd" "$param" $new
	set_persistent_param_and_check ost1 "$cmd" "$param" $old

	# Check 2.
	# prepare a non-symlink parameter in the OSD
	name="auto_scrub"
	param="$device.osd.$name"
	cmd="osd-*.$device.$name"

	# conf_param the parameter in the OSD
	old=$(do_facet ost1 $LCTL get_param -n $cmd)
	new=$(((old + 1) % 2))
	set_persistent_param_and_check ost1 "$cmd" "$param" $new
	set_persistent_param_and_check ost1 "$cmd" "$param" $old

	cleanup || error "cleanup failed with $?"
}
run_test 28a "set symlink parameters permanently with lctl"

test_28b() {
	setup_noconfig
	stack_trap "cleanup"

	# jobid_this_session is not available so use jobid_name when possible
	if $LCTL list_param jobid_name &> /dev/null; then
		local jobvarname=jobid_name test_val="$TESTNAME-$RANDOM%p"
	else
		local jobvarname=jobid_var test_val=$TESTNAME-$RANDOM
	fi

	local jobid_var_new
	local jobid_var_old=$($LCTL get_param -n $jobvarname)
	local paramdir=/etc/lustre
	local paramfile=$paramdir/mount.client.params

	[[ -d $paramdir ]] || mkdir $paramdir

	stack_trap "$LCTL set_param $jobvarname=$jobid_var_old"

	if [[ -e $paramfile ]]; then
		mv $paramfile $paramfile.$TESTNAME
		stack_trap "mv $paramfile.$TESTNAME $paramfile"
	else
		# leave no traces behind
		stack_trap "rm $paramfile"
	fi

	# if the test param is set in the filesystem params file
	# it will override the more general client params
	if [[ -e $paramdir/mount.$FSNAME.params ]]; then
		echo "disabling $FSNAME specific params file"
		local clientfile=$paramdir/mount.$FSNAME.params

		mv $clientfile $clientfile.disabled
		stack_trap "mv $clientfile.disabled $clientfile"
	fi
	echo "$jobvarname=$test_val" > $paramfile

	remount_client $MOUNT

	jobid_var_new=$($LCTL get_param -n $jobvarname)

	echo "before mount: $jobid_var_old"
	echo "after mount:  $jobid_var_new"
	[[ "$jobid_var_new" == "$test_val" ]] ||
		error "$jobvarname was not $test_val: got $jobid_var_new"
}
run_test 28b "verify client-side parameters are set upon mount"

test_28c() {
	setup_noconfig
	stack_trap "cleanup"

	# jobid_this_session is not available so use jobid_name when possible
	if $LCTL list_param jobid_name > /dev/null 2>&1; then
		local jobvarname=jobid_name test_val="$TESTNAME-$RANDOM%p"
	else
		local jobvarname=jobid_var test_val=$TESTNAME-$RANDOM
	fi

	local jobid_var_new
	local jobid_var_old=$($LCTL get_param -n $jobvarname)
	local paramdir=/etc/lustre
	local paramfile=$paramdir/mount.$FSNAME.params

	[[ -d $paramdir ]] || mkdir $paramdir

	stack_trap "$LCTL set_param $jobvarname=$jobid_var_old"

	if [[ -e $paramfile ]]; then
		mv $paramfile $paramfile.$testname
		stack_trap "mv $paramfile.$testname $paramfile"
	else
		# leave no traces behind
		stack_trap "rm $paramfile"
	fi
	echo "$jobvarname=$test_val" > $paramfile

	remount_client $MOUNT

	jobid_var_new=$($LCTL get_param -n $jobvarname)

	echo "before mount: $jobid_var_old"
	echo "after mount:  $jobid_var_new"
	[[ "$jobid_var_new" == "$test_val" ]] ||
		error "$jobvarname was not $test_val: got $jobid_var_new"
}
run_test 28c "verify filesystem parameters are set upon mount"

test_29() {
	[ "$OSTCOUNT" -lt "2" ] && skip_env "needs >= 2 OSTs"
	setup_noconfig > /dev/null 2>&1
	start_ost2 || error "Unable to start OST2"
	sleep 10

	local PARAM="$FSNAME-OST0001.osc.active"
	# With lctl set_param -P the value $PROC_ACT will be sent to
	# all nodes. The [!M] filter out the ability to set active
	# on the MDS servers which is tested with wait_osp_* below.
	# For ost_server_uuid that only exist on client so filtering
	# is safe.
	local PROC_ACT="os[cp].$FSNAME-OST0001-osc-[^M]*.active"
	local PROC_UUID="os[cp].$FSNAME-OST0001-osc-[^M]*.ost_server_uuid"

	ACTV=$($LCTL get_param -n $PROC_ACT)
	DEAC=$((1 - $ACTV))
	set_persistent_param_and_check client $PROC_ACT $PARAM $DEAC
	# also check ost_server_uuid status
	RESULT=$($LCTL get_param -n $PROC_UUID | grep DEACTIV)
	if [ -z "$RESULT" ]; then
		error "Client not deactivated: $($LCTL get_param \
		       -n $PROC_UUID)"
	else
		echo "Live client success: got $RESULT"
	fi

	# check MDTs too
	wait_osp_active ost ${FSNAME}-OST0001 1 0

	# test new client starts deactivated
	umount_client $MOUNT || error "umount_client $MOUNT failed"
	mount_client $MOUNT || error "mount_client $MOUNT failed"

	# the 2nd and 3rd field of ost_server_uuid do not update at the same
	# time when using lctl set_param -P
	wait_update_facet client					\
		"$LCTL get_param -n $PROC_UUID | awk '{print \\\$3 }'"	\
		"DEACTIVATED" ||
		error "New client start active: $($LCTL get_param -n $PROC_UUID)"

	echo "New client success: got '$($LCTL get_param -n $PROC_UUID)'"

	# make sure it reactivates
	set_persistent_param_and_check client $PROC_ACT $PARAM $ACTV

	umount_client $MOUNT
	stop_ost2 || error "Unable to stop OST2"
	cleanup_nocli || error "cleanup_nocli failed with $?"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 29 "permanently remove an OST"

test_30a() {
	setup_noconfig

	echo Big config llog
	local path="llite.$FSNAME-*"
	local cpath="$FSNAME.llite"
	local param="max_read_ahead_whole_mb"

	local test="${path}.$param"
	local conf="${cpath}.$param"

	local orig=$($LCTL get_param -n $test)
	local list=(1 2 3 4 5 4 3 2 1 2 3 4 5 4 3 2 1 2 3 4 5)
	for i in ${list[*]}; do
		set_persistent_param_and_check client $test $conf $i
	done
	# make sure client restart still works
	umount_client $MOUNT
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	[ "$($LCTL get_param -n $test)" -ne "$i" ] &&
		error "Param didn't stick across restart $($test) != $i"
	pass

	echo Erase parameter setting
	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs "$PERM_CMD -d $test" ||
			error "Erase param $test failed"
	else
		do_facet mgs "$PERM_CMD -d $conf" ||
			error "Erase param $conf failed"
	fi
	umount_client $MOUNT
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	local final=$($LCTL get_param -n $test)
	echo "deleted (default) value=$final, orig=$orig"
	orig=${orig%%.[0-9]*}
	final=${final%%.[0-9]*}
	# assumes this parameter started at the default value
	[ "$final" -eq "$orig" ] ||
		error "Deleted value=$final -ne orig=$orig"

	cleanup || error "cleanup failed with rc $?"
}
run_test 30a "Big config llog and permanent parameter deletion"

test_30b() {
	setup_noconfig

	local orignids=$($LCTL get_param -n \
		osc.$FSNAME-OST0000-osc-[^M]*.import | grep failover_nids)
	local orignidcount=$(echo "$orignids" | wc -w)

	# Make a fake NID.  Use the OST NID, and increase the least significant
	# field. Hopefully that's not already a failover address for an existing
	# node, but if so try again until it is an unused NID for this cluster.
	local ostnid=$(do_facet ost1 "$LCTL list_nids | tail -1")
	local origval=$(echo $ostnid | grep -E -oi "[0-9a-f]*@")
	# this will match on first loop, but keeps fake NID logic in one place
	local newnid=$ostnid

	echo "Checking peer and local NIDs:"
	while { $LNETCTL peer show | awk '/nid/{print $NF}' | sort -u
		$LCTL list_nids; } | grep -w $newnid; do
		local newval=$(((0x${origval%@} + $RANDOM) % 256))
		newnid=${ostnid/$origval/$newval@}
	done

	echo "Changing $ostnid to fake NID $newnid"

	local test="$LCTL get_param -n osc.$FSNAME-OST0000-osc-[^M]*.import |
		    grep failover_nids | sed -n 's/.*\($newnid\).*/\1/p'"
	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		param="osc.$FSNAME-OST0000-osc-[^M]*.import"
		echo "Setting $param from $ostnid to $newnid"
		do_facet mgs "$PERM_CMD $param='connection=$newnid'" ||
			error "$PERM_CMD $param failed"
	else
		param="$FSNAME-OST0000.failover.node"
		echo "Setting $param from $ostnid to $newnid"
		do_facet mgs "$PERM_CMD $param='$newnid'" ||
			error "$PERM_CMD $param failed"
	fi
	wait_update_facet client "$test" "$newnid" || {
		$LCTL get_param  osc.$FSNAME-OST0000-osc-[^M]*.import
		error "check $param for '$newnid' failed!"
	}

	local nids=$($LCTL get_param -n osc.$FSNAME-OST0000-osc-[^M]*.import |
		     grep failover_nids)
	local nidcount=$(echo "$nids" | wc -w)
	echo "should have $((orignidcount + 1)) failover NIDs, have $nidcount"
	(( $nidcount == $((orignidcount + 1)) )) || {
		echo $nids
		error "Failover NID '$newnid' not added"
	}

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs "$PERM_CMD -d osc.$FSNAME-OST0000-osc-*.import"
	else
		do_facet mgs "$PERM_CMD -d $FSNAME-OST0000.failover.node" ||
			error "$PERM_CMD delete failed"
	fi
	umount_client $MOUNT || error "umount_client $MOUNT failed"
	mount_client $MOUNT || error "mount_client $MOUNT failed"

	nids=$($LCTL get_param -n osc.$FSNAME-OST0000-osc-[^M]*.import |
	       grep failover_nids)
	nidcount=$(echo "$nids" | wc -w)
	echo "only $orignidcount failover NIDs should be left, have $nidcount"
	(( $nidcount == $orignidcount )) || {
		echo "$nids"
		error "Failover NID '$newnid' not removed"
	}

	cleanup || error "cleanup failed with rc $?"
}
run_test 30b "Remove failover nids"

test_31() { # bug 10734
	load_modules
	# ipaddr must not exist
	$MOUNT_CMD 4.3.2.1@tcp:/lustre $MOUNT || true
	cleanup || error "cleanup failed with rc $?"
}
run_test 31 "Connect to non-existent node (shouldn't crash)"


T32_QID=60000
T32_BLIMIT=40960 # Kbytes
T32_ILIMIT=4
T32_PRJID=1000
T32_PROLIMIT=$((T32_BLIMIT/10))
T32_POOLLIMIT=$((T32_BLIMIT/2))
#
# This is not really a test but a tool to create new disk
# image tarballs for the upgrade tests.
#
# Disk image tarballs should be created on single-node
# clusters by running this test with default configurations
# plus a few mandatory environment settings that are verified
# at the beginning of the test.
#
test_32newtarball() {
	local version
	local dst=.
	local src=/etc/rc.d
	local tmp=$TMP/t32_image_create
	local remote_dir
	local striped_dir
	local pushd_dir
	local pfl_dir
	local pfl_file
	local dom_dir
	local dom_file
	local flr_dir
	local flr_file
	local pj_quota_dir
	local pj_quota_file_old
	local target_dir

	[[ "$FSNAME" == "t32fs" && ( -n "$MDSDEV" || -n "$MDSDEV1" ) &&
	   -n "$OSTDEV1" ]] && (( $OSTCOUNT == 2 )) ||
		error   "Needs FSNAME=t32fs MDSCOUNT=2 "		\
			"MDSDEV1=<nonexistent_file> "			\
			"MDSDEV2=<nonexistent_file> "			\
			"(or MDSDEV, in the case of b1_8) "		\
			"OSTCOUNT=2 OSTDEV1=<nonexistent_file> "	\
			"OSTDEV2=<nonexistent_file>"

	mkdir $tmp || error "Found stale $tmp"

	mkdir $tmp/src || return 1
	tar cf - -C $src . | tar xf - -C $tmp/src

	# format ost with comma-separated NIDs to verify LU-4460
	local failnid="$(h2nettype 1.2.3.4),$(h2nettype 4.3.2.1)"
	MGSNID="$MGSNID,$MGSNID" OSTOPT="--failnode=$failnid" formatall

	setupall

	(( "$MDS1_VERSION" >= $(version_code 2.3.50) )) ||
		$LFS quotacheck -ug /mnt/$FSNAME
	$LFS setquota -u $T32_QID -b 0 -B $T32_BLIMIT -i 0 -I $T32_ILIMIT \
		/mnt/$FSNAME

	if (( $MDSCOUNT >= 2 )); then
		remote_dir=/mnt/$FSNAME/remote_dir
		$LFS mkdir -i 1 $remote_dir
		tar cf - -C $tmp/src . | tar xf - -C $remote_dir

		target_dir=$remote_dir
		if (( $MDS1_VERSION >= $(version_code 2.7.0) )); then
			striped_dir=/mnt/$FSNAME/striped_dir_old
			$LFS mkdir -i 1 -c 2 $striped_dir
			tar cf - -C $tmp/src . | tar xf - -C $striped_dir
		fi
	else
		tar cf - -C $tmp/src . | tar xf - -C /mnt/$FSNAME
		target_dir=/mnt/$FSNAME
	fi

	# add project quota #
	[[ $mds1_FSTYPE == "ldiskfs" &&
		$MDS1_VERSION -gt $(version_code 2.9.55) ]] ||
	[[ $mds1_FSTYPE == "zfs" &&
		$MDS1_VERSION -gt $(version_code 2.10.53) ]] && {
		pj_quota_dir=$target_dir/project_quota_dir
		pj_quota_file_old=$pj_quota_dir/pj_quota_file_old

		enable_project_quota
		set_mdt_qtype ugp ||
			error "enable mdt quota failed"

		set_ost_qtype ugp ||
			error "enable ost quota failed"

		mkdir -p $pj_quota_dir
		$LFS setquota -p $T32_PRJID -b 0 -B $T32_PROLIMIT -i 0 \
			-I $T32_ILIMIT $pj_quota_dir ||
			error "setquota -p $T32_PRJID failed"

		$LFS setstripe $pj_quota_file_old -c 1 ||
			error "setstripe $pj_quota_file_old failed"

		chown $T32_QID:$T32_QID $pj_quota_file_old ||
			error "chown $pj_quota_file_old failed"

		change_project -p $T32_PRJID $pj_quota_file_old

		mkdir -p $tmp/src/project_quota_dir
		cp $pj_quota_file_old $tmp/src/project_quota_dir/
	}

	#####################

	# PFL file #
	if (( $MDS1_VERSION >= $(version_code 2.9.51) )); then
		pfl_dir=$target_dir/pfl_dir
		pfl_file=$pfl_dir/pfl_file
		mkdir -p $pfl_dir
		$LFS setstripe -E 2M -c1 -o0 -E -1 -S2M -c1 -o1 $pfl_dir ||
			error "Create PFL file failed"

		dd if=/dev/urandom of=$pfl_file bs=1M count=3
		mkdir -p $tmp/src/pfl_dir
		cp $pfl_file $tmp/src/pfl_dir/
	fi

	############
	# DoM / FLR file #
	if (( $MDS1_VERSION >= $(version_code 2.10.56) )); then
		dom_dir=$target_dir/dom_dir
		dom_file=$dom_dir/dom_file
		flr_dir=$target_dir/flr_dir
		flr_file=$flr_dir/flr_file

		mkdir -p $dom_dir
		$LFS setstripe -E 1M -L mdt -E -1 -S 4M $dom_dir
		dd if=/dev/urandom of=$dom_file bs=1M count=2 ||
			error "create $dom_file failed"
		mkdir -p $tmp/src/dom_dir
		cp $dom_file $tmp/src/dom_dir
	# FLR #
		mkdir -p $flr_dir
		$LFS mirror create -N2 $flr_file
		dd if=/dev/urandom of=$flr_file bs=1k count=1 ||
			error "create $flr_file failed"
		mkdir -p $tmp/src/flr_dir
		cp $flr_file $tmp/src/flr_dir
	fi
	############

	############
	# OST pool quota #
	if (( $MDS1_VERSION >= $(version_code 2.13.56) )); then
		local qpool=testpool
		local pool_name=$FSNAME.$qpool
		local pool_dir=$target_dir/pool_dir
		local pool_list=$pool_dir/pool_list
		local pool_file=$pool_dir/pool_file

		$LCTL pool_new $pool_name || error "pool_new $pool_name failed"
		$LCTL pool_add $pool_name $FSNAME-OST[0-1/1] ||
			error "pool_add $pool_name failed"

		mkdir_on_mdt0 $pool_dir || error "mkdir $pool_dir failed"
		chmod 0777 $pool_dir || error "chmod $pool_dir failed"
		$LFS setstripe -E 1M -c 1 --pool $qpool -E eof -c 2 $pool_dir ||
			error "setstripe $pool_dir failed"
		touch $pool_file || error "touch $pool_file failed"
		chown $T32_QID:$T32_QID $pool_file ||
			error "chown $pool_file failed"

		$LCTL pool_list $pool_name > $pool_list ||
			error "create $pool_list failed"

		set_ost_qtype ugp ||
			error "enable ost quota failed"

		$LFS setquota -u $T32_QID -B $T32_POOLLIMIT --pool $qpool \
			$pool_dir || error "set user quota on $pool_dir failed"

		mkdir -p $tmp/src/pool_dir
		cp -t $tmp/src/pool_dir $pool_file $pool_list
	fi
	############

	############
	# fscrypt file data #
	if (( $MDS1_VERSION >= $(version_code 2.13.55) )) &&
		which fscrypt; then
		local fscrypt_data_pass=$target_dir/fscrypt_data_pass
		local fscrypt_data_dir=$target_dir/fscrypt_data_dir
		local fscrypt_data_file=$fscrypt_data_dir/fscrypt_data_file
		local fscrypt_data_dom=$fscrypt_data_dir/fscrypt_data_dom
		local my_pass="mypass"

		yes | fscrypt setup --force --verbose ||
			error "fscrypt global setup failed"
		sed -i 's/\(.*\)policy_version\(.*\):\(.*\)\"[0-9]*\"\(.*\)/\1policy_version\2:\3"2"\4/' \
			/etc/fscrypt.conf
		yes | fscrypt setup --verbose /mnt/$FSNAME ||
			error "fscrypt setup /mnt/$FSNAME failed"

		mkdir_on_mdt0 $fscrypt_data_dir ||
			error "mkdir $fscrypt_data_dir failed"

		echo -e 'mypass\nmypass' |
			fscrypt encrypt --verbose --source=custom_passphrase \
			--name=protector $fscrypt_data_dir ||
			error "fscrypt encrypt $fscrypt_data_dir failed"

		echo "$my_pass" > $fscrypt_data_pass ||
			error "save $fscrypt_data_pass failed"

		dd if=/dev/urandom of=$fscrypt_data_file bs=128k count=1 ||
			error "write $fscrypt_data_file failed"

		$LFS setstripe -E 64K -L mdt -E eof -c 1 $fscrypt_data_dom ||
			error "setstripe $fscrypt_data_dom failed"
		dd if=/dev/urandom of=$fscrypt_data_dom bs=128k count=1 ||
			error "write $fscrypt_data_dom failed"

		ls -R $fscrypt_data_dir ||
			error "ls -R $fscrypt_data_dir failed"
		local filecount=$(find $fscrypt_data_dir -type f | wc -l)
		(( filecount == 2 )) || error "found $filecount files"

		mkdir -p $tmp/src/fscrypt_data_dir
		cp -t $tmp/src/fscrypt_data_dir \
			$fscrypt_data_file $fscrypt_data_dom
		cp $fscrypt_data_pass $tmp/src
	fi
	############

	############
	# fscrypt file name #
	if (( $MDS1_VERSION >= $(version_code 2.14.57) )) &&
		which fscrypt; then
		local fscrypt_name_pass=$target_dir/fscrypt_name_pass
		local fscrypt_name_dir=$target_dir/fscrypt_name_dir
		local fscrypt_name_file=$fscrypt_name_dir/fscrypt_name_file
		local fscrypt_name_dom=$fscrypt_name_dir/fscrypt_name_dom

		[[ -s $fscrypt_data_pass ]] &&
			my_pass=$(cat $fscrypt_data_pass) ||
			my_pass="mypass"

		mkdir_on_mdt0 $fscrypt_name_dir ||
			error "mkdir $fscrypt_name_dir failed"

		$LCTL set_param -P llite.*.enable_filename_encryption=1 ||
			error "enable filename encryption failed"

		wait_update_facet --verbose client \
			"$LCTL get_param -n llite.*.enable_filename_encryption \
			| head -n1" 1 30 ||
			error "enable_filename_encryption not set on client"

		echo -e 'mypass\nmypass' |
			fscrypt encrypt --verbose --source=custom_passphrase \
			--name=protector2 $fscrypt_name_dir ||
			error "fscrypt encrypt $fscrypt_name_dir failed"

		echo "$my_pass" > $fscrypt_name_pass ||
			error "save $fscrypt_name_pass failed"

		dd if=/dev/urandom of=$fscrypt_name_file bs=128k count=1 ||
			error "write $fscrypt_name_file failed"

		$LFS setstripe -E 64K -L mdt -E eof -c 1 $fscrypt_name_dom ||
			error "setstripe $fscrypt_name_dom failed"
		dd if=/dev/urandom of=$fscrypt_name_dom bs=128k count=1 ||
			error "write $fscrypt_name_dom failed"

		ls -R $fscrypt_name_dir ||
			error "ls -R $fscrypt_name_dir failed"
		local filecount=$(find $fscrypt_name_dir -type f | wc -l)
		(( filecount == 2 )) || error "found $filecount files"

		mkdir -p $tmp/src/fscrypt_name_dir
		cp -t $tmp/src/fscrypt_name_dir \
			$fscrypt_name_file $fscrypt_name_dom
		cp $fscrypt_name_pass $tmp/src
	fi
	############

	local large_xattr_dir=/mnt/$FSNAME/large_xattr_test_dir
	local xattr_file=$large_xattr_dir/large_xattr_file

	mkdir $large_xattr_dir
	touch $xattr_file
	setfattr -n user.fooattr -v $(printf "%c" {1..4096} ) $xattr_file ||
		rm -f $xattr_file

	tar cf - -C $tmp/src . | tar xf - -C /mnt/$FSNAME

	stopall

	mkdir $tmp/img || return 1

	setupall

	if [[ -n $fscrypt_data_pass ]]; then
		local unlock_status=$(fscrypt status $fscrypt_data_dir |
				      awk '/Unlocked:/{print $2}')
		[[ $unlock_status == Yes ]] ||
			cat $fscrypt_data_pass |
			fscrypt unlock --verbose $fscrypt_data_dir ||
				error "unlock $fscrypt_data_dir failed"
	fi

	if [[ -n $fscrypt_name_pass ]]; then
		local unlock_status=$(fscrypt status $fscrypt_name_dir |
				      awk '/Unlocked:/{print $2}')
		[[ $unlock_status == Yes ]] ||
			cat $fscrypt_name_pass |
			fscrypt unlock --verbose $fscrypt_name_dir ||
				error "unlock $fscrypt_name_dir failed"
	fi

	pushd_dir=/mnt/$FSNAME
	if [[ $MDSCOUNT -ge 2 ]]; then
		pushd_dir=$remote_dir
		if [[ "$MDS1_VERSION" -ge $(version_code 2.7.0) ]]; then
			pushd $striped_dir
			BLOCKSIZE=1024 ls -Rni --time-style=+%s >$tmp/img/list2
			popd
		fi
	fi

	pushd $pushd_dir
	BLOCKSIZE=1024 ls -Rni --time-style=+%s >$tmp/img/list
	find ! -name .lustre -type f -exec sha1sum {} \; |
		sort -k 2 >$tmp/img/sha1sums
	popd
	$LCTL get_param -n version | head -n 1 |
		sed -e 's/^lustre: *//' >$tmp/img/commit

	[[ "$MDS1_VERSION" -ge $(version_code 2.3.50) ]] ||
		$LFS quotaon -ug /mnt/$FSNAME
	$LFS quota -u $T32_QID -v /mnt/$FSNAME
	$LFS quota -v -u $T32_QID /mnt/$FSNAME |
		awk 'BEGIN { num='1' } { if ($1 == "'/mnt/$FSNAME'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*" > $tmp/img/bspace
	$LFS quota -v -u $T32_QID /mnt/$FSNAME |
		awk 'BEGIN { num='5' } { if ($1 == "'/mnt/$FSNAME'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*" > $tmp/img/ispace
	echo $T32_BLIMIT > $tmp/img/blimit
	echo $T32_ILIMIT > $tmp/img/ilimit

	# OST pool quota #
	if (( $MDS1_VERSION >= $(version_code 2.13.56) )); then
		$LFS quota -v -u $T32_QID --pool $qpool $pool_dir
		DIR=$pool_dir getquota -u $T32_QID global curspace $qpool \
			> $tmp/img/bspace_pool
		echo $T32_POOLLIMIT > $tmp/img/blimit_pool
	fi

	# fscrypt file data #
	if [[ -n $fscrypt_data_pass ]]; then
		unlock_status=$(fscrypt status $fscrypt_data_dir |
				awk '/Unlocked:/{print $2}')

		if [[ $unlock_status == Yes ]]; then
			fscrypt lock --verbose $fscrypt_data_dir ||
				error "fscrypt lock $fscrypt_data_dir failed"
		fi

		ls -l $fscrypt_data_dir ||
			error "ls -l $fscrypt_data_dir failed"
		ls $fscrypt_data_file || error "ls $fscrypt_data_file failed"
		ls $fscrypt_data_dom || error "ls $fscrypt_data_dom failed"
	fi

	# fscrypt file name #
	if [[ -n $fscrypt_name_pass ]]; then
		unlock_status=$(fscrypt status $fscrypt_name_dir |
				awk '/Unlocked:/{print $2}')

		if [[ $unlock_status == Yes ]]; then
			fscrypt lock --verbose $fscrypt_name_dir ||
				error "fscrypt lock $fscrypt_name_dir failed"
		fi

		ls -l $fscrypt_name_dir ||
			error "ls -l $fscrypt_name_dir failed"
		! ls $fscrypt_name_file ||
			error "ls $fscrypt_name_file should fail"
		! ls $fscrypt_name_dom ||
			error "ls $fscrypt_name_dom should fail"
	fi

	$MULTIOP /mnt/$FSNAME/orph_file Ouw_c&
	pid=$!
	sync
	stop_mdt_no_force 1
	debugfs -R "ls /PENDING" ${MDSDEV1:-$MDSDEV}
	start_mdt 1
	kill -s USR1 $pid
	wait $pid

	#################
	stopall

	pushd $tmp/src
	find -type f -exec sha1sum {} \; | sort -k 2 >$tmp/sha1sums.src
	popd

	if ! diff -u $tmp/sha1sums.src $tmp/img/sha1sums; then
		echo "Data verification failed"
	fi

	uname -r >$tmp/img/kernel
	uname -m >$tmp/img/arch

	for ((num=1; num <= $MDSCOUNT; num++)); do
		local devname=$(mdsdevname $num)
		local facet=mds$num
		local image_name

		[[ num -eq 1 ]] && image_name=mdt || image_name=mdt$num
		[[ $(facet_fstype $facet) != zfs ]] ||
			devname=$(mdsvdevname $num)
		dd conv=sparse bs=4k if=$devname of=$tmp/img/$image_name
	done

	for ((num=1; num <= $OSTCOUNT; num++)); do
		local devname=$(ostdevname $num)
		local facet=oss$num
		local image_name

		[[ num -eq 1 ]] && image_name=ost || image_name=ost$num
		[[ $(facet_fstype $facet) != zfs ]] ||
			devname=$(ostvdevname $num)
		dd conv=sparse bs=4k if=$devname of=$tmp/img/$image_name
	done

	version=$(sed -e 's/\(^[0-9]\+\.[0-9]\+\)\(.*$\)/\1/' $tmp/img/commit |
			  sed -e 's/\./_/g')	# E.g., "1.8.7" -> "1_8"
	dst=$(cd $dst; pwd)
	pushd $tmp/img
	tar cjvf $dst/disk$version-"$mds1_FSTYPE".tar.bz2 -S *
	popd

	rm -r $tmp
}
# run_test 32newtarball "Create new test_32 disk image tarball for this version"

#
# The list of applicable tarballs is returned via the caller's
# variable "tarballs".
#
t32_check() {
	[ "$CLIENTONLY" ] && skip "Client-only testing"

	check_versions || skip "do not upgrade with mismatched client/server"

	local node=$(facet_active_host $SINGLEMDS)
	local r="do_node $node"

	! $r which "$TUNEFS" && skip_env "tunefs.lustre required on $node"

	local IMGTYPE="$mds1_FSTYPE"

	[[ -n "$T32IMAGE" ]] && tarballs=$T32IMAGE ||
		tarballs=$($r find $RLUSTRE/tests -maxdepth 1 \
			   -name \'disk*-$IMGTYPE.tar.bz2\')

	[ -z "$tarballs" ] && skip "No applicable tarballs found"
}

t32_test_cleanup() {
	local tmp=$TMP/t32
	local facet=$SINGLEMDS
	local rc=$?

	echo "== cleanup with rc=$rc =="
	if $shall_cleanup_lustre; then
		umount $tmp/mnt/lustre || rc=$?
	fi
	if $shall_cleanup_mdt; then
		$r $UMOUNT $tmp/mnt/mdt || rc=$?
	fi
	if $shall_cleanup_mdt1; then
		$r $UMOUNT $tmp/mnt/mdt1 || rc=$?
	fi
	if $shall_cleanup_ost; then
		$r $UMOUNT $tmp/mnt/ost || rc=$?
	fi
	if $shall_cleanup_ost1; then
		$r $UMOUNT $tmp/mnt/ost1 || rc=$?
	fi

	$r rm -rf $tmp
	rm -rf $tmp
	if [[ "$mds1_FSTYPE" == zfs ]]; then
		local poolname
		local poolname_list="t32fs-mdt1 t32fs-ost1"

		! $mdt2_is_available || poolname_list+=" t32fs-mdt2"

		for poolname in $poolname_list; do
			destroy_zpool $facet $poolname
		done
	fi
	combined_mgs_mds || start_mgs || rc=$?
	return $rc
}

t32_bits_per_long() {
	#
	# Yes, this is not meant to be perfect.
	#
	case $1 in
		ppc64|x86_64)
			echo -n 64;;
		i*86)
			echo -n 32;;
	esac
}

t32_reload_modules() {
	local node=$1
	local all_removed=false
	local i=0

	[ "$mds1_FSTYPE" == zfs ] && do_rpc_nodes $node "service zed stop"

	while ((i < 20)); do
		echo "Unloading modules on $node: Attempt $i"
		do_rpc_nodes $node $LUSTRE_RMMOD "$mds1_FSTYPE" &&
			all_removed=true
		do_rpc_nodes $node check_mem_leak || return 1
		if $all_removed; then
			do_rpc_nodes $node load_modules
			return 0
		fi
		if [ "$mds1_FSTYPE" == zfs ]; then
			do_rpc_nodes $node "$ZPOOL status -v"
		fi
		sleep 5
		i=$((i + 1))
	done
	echo "Unloading modules on $node: Given up"
	return 1
}

t32_wait_til_devices_gone() {
	local node=$1
	local devices
	local loops
	local i=0

	echo wait for devices to go
	while ((i < 20)); do
		devices=$(do_rpc_nodes $node $LCTL device_list | wc -l)
		loops=$(do_rpc_nodes $node losetup -a | grep -c t32)
		((devices == 0 && loops == 0)) && return 0
		sleep 5
		i=$((i + 1))
	done
	echo "waiting for dev on $node: dev $devices loop $loops given up"
	do_rpc_nodes $node "losetup -a"
	do_rpc_nodes $node "$LCTL device_list"
	return 1
}

t32_verify_quota() {
	local facet=$1
	local fsname=$2
	local mnt=$3
	local qval
	local cmd

	# LU-2435: if the underlying zfs doesn't support userobj_accounting,
	# lustre will estimate the object count usage. This fails quota
	# verification in 32b. The object quota usage should be accurate after
	# zfs-0.7.0 is released.
	[ "$mds1_FSTYPE" == zfs ] && {
		local zfs_version=$(do_facet $facet cat /sys/module/zfs/version)

		[ $(version_code $zfs_version) -lt $(version_code 0.7.0) ] && {
			echo "Skip quota verify for zfs: $zfs_version"
			return 0
		}
	}

	$LFS quota -u $T32_QID -v $mnt

	qval=$($LFS quota -v -u $T32_QID $mnt |
		awk 'BEGIN { num='1' } { if ($1 == "'$mnt'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*")
	[ $qval -eq $img_bspace ] || {
		echo "bspace, act:$qval, exp:$img_bspace"
		return 1
	}

	qval=$($LFS quota -v -u $T32_QID $mnt |
		awk 'BEGIN { num='5' } { if ($1 == "'$mnt'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*")
	[ $qval -eq $img_ispace ] || {
		echo "ispace, act:$qval, exp:$img_ispace"
		return 1
	}

	qval=$($LFS quota -v -u $T32_QID $mnt |
		awk 'BEGIN { num='3' } { if ($1 == "'$mnt'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*")
	[ $qval -eq $img_blimit ] || {
		echo "blimit, act:$qval, exp:$img_blimit"
		return 1
	}

	qval=$($LFS quota -v -u $T32_QID $mnt |
		awk 'BEGIN { num='7' } { if ($1 == "'$mnt'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*")
	[ $qval -eq $img_ilimit ] || {
		echo "ilimit, act:$qval, exp:$img_ilimit"
		return 1
	}

	set_persistent_param_and_check $facet \
		"osd-$mds1_FSTYPE.$fsname-MDT0000.quota_slave.enabled" \
		"$fsname.quota.mdt" ug

	set_persistent_param_and_check $facet \
		"osd-$mds1_FSTYPE.$fsname-OST0000.quota_slave.enabled" \
		"$fsname.quota.ost" ug

	chmod 0777 $mnt
	runas -u $T32_QID -g $T32_QID $DD of=$mnt/t32_qf_new \
		count=$((img_blimit / 1024)) oflag=sync && {
		echo "Write succeed, but expect -EDQUOT"
		return 1
	}
	rm -f $mnt/t32_qf_new

	runas -u $T32_QID -g $T32_QID createmany -m $mnt/t32_qf_ \
		$img_ilimit && {
		echo "Create succeed, but expect -EDQUOT"
		return 1
	}
	unlinkmany $mnt/t32_qf_ $img_ilimit

	# OST pool quota #
	if (( $(version_code $img_commit) >= $(version_code 2.13.56) )) &&
		[[ "$pool_quota_upgrade" == "yes" ]]; then
		$mdt2_is_available || pool_dir=$mnt/pool_dir
		local pool_file_new=$pool_dir/pool_file_new

		local qpool=$($LFS getstripe -p $pool_dir)
		[[ -n "$qpool" ]] || {
			echo "no OST pool on $pool_dir"
			return 1
		}

		do_facet mgs "$LCTL pool_list $fsname.$qpool" || {
			echo "$LCTL pool_list $fsname.$qpool failed"
			return 1
		}

		$LFS quota -v -u $T32_QID --pool $qpool $pool_dir || {
			echo "$LFS quota $pool_dir failed"
			return 1
		}

		qval=$(DIR=$pool_dir getquota -u $T32_QID \
		       global curspace $qpool)
		[[ $qval == $img_bspace_pool ]] || {
			echo "bspace_pool, act:$qval, exp:$img_bspace_pool"
			return 1
		}

		qval=$(DIR=$pool_dir getquota -u $T32_QID \
		       global bhardlimit $qpool)
		[[ $qval == $img_blimit_pool ]] || {
			echo "blimit_pool, act:$qval, exp:$img_blimit_pool"
			return 1
		}

		touch $pool_file_new || {
			echo "touch $pool_file_new failed"
			return 1
		}

		chown $T32_QID:$T32_QID $pool_file_new || {
			echo "chown $pool_file_new failed"
			return 1
		}

		runas -u $T32_QID -g $T32_QID $DD of=$pool_file_new \
			count=$((img_blimit_pool / 1024)) oflag=sync && {
			echo "Write $pool_file_new succeed, but expect -EDQUOT"
			return 1
		}
		rm -f $pool_file_new
	fi

	return 0
}

get_project_quota() {
	local spec=$4
	local uuid=$3
	local mnt=$5

	sync_all_data > /dev/null 2>&1 || true

	[ "$uuid" != "global" ] || uuid=$mnt

	$LFS quota -v "$1" "$2" $mnt |
		awk 'BEGIN { num='$spec' } { if ($1 == "'$uuid'") \
		{ if (NF == 1) { getline } else { num++ } ; print $num;} }' \
		| tr -d "*"
}

t32_test() {
	local tarball=$1
	local writeconf=$2
	local dne_upgrade=${dne_upgrade:-"no"}
	local dom_upgrade=${dom_upgrade:-"no"}
	local project_upgrade=${project_upgrade:-"no"}
	local ff_convert=${ff_convert:-"no"}
	local pfl_upgrade=${pfl_upgrade:-"no"}
	local project_quota_upgrade=${project_quota_upgrade:-"no"}
	local dom_new_upgrade=${dom_new_upgrade:-"no"}
	local flr_upgrade=${flr_upgrade:-"no"}
	local pool_quota_upgrade=${pool_quota_upgrade:-"no"}
	local fscrypt_data_upgrade=${fscrypt_data_upgrade:-"no"}
	local fscrypt_name_upgrade=${fscrypt_name_upgrade:-"no"}
	local shall_cleanup_mdt=false
	local shall_cleanup_mdt1=false
	local shall_cleanup_ost=false
	local shall_cleanup_ost1=false
	local shall_cleanup_lustre=false
	local mdt2_is_available=false
	local ost2_is_available=false
	local node=$(facet_active_host $SINGLEMDS)
	local r="do_node $node"
	local tmp=$TMP/t32
	local img_commit
	local img_kernel
	local img_arch
	local img_bspace
	local img_bspace_pool
	local img_ispace
	local img_blimit
	local img_blimit_pool
	local img_ilimit
	local fsname=t32fs
	local nid
	local mopts
	local uuid
	local nrpcs_orig
	local nrpcs
	local list
	local mdt_dev=$tmp/mdt
	local mdt2_dev=$tmp/mdt2
	local ost_dev=$tmp/ost
	local ost2_dev=$tmp/ost2
	local stripe_index
	local stripe_count
	local dir
	local pfl_file=$tmp/mnt/lustre/remote_dir/pfl_dir/pfl_file
	local flr_file=$tmp/mnt/lustre/remote_dir/flr_dir/flr_file
	local dom_file=$tmp/mnt/lustre/remote_dir/dom_dir/dom_file
	local quota_dir=$tmp/mnt/lustre/remote_dir/project_quota_dir
	local pool_dir=$tmp/mnt/lustre/remote_dir/pool_dir
	local fscrypt_data_dir=$tmp/mnt/lustre/remote_dir/fscrypt_data_dir
	local fscrypt_data_pass=$tmp/mnt/lustre/remote_dir/fscrypt_data_pass
	local fscrypt_name_dir=$tmp/mnt/lustre/remote_dir/fscrypt_name_dir
	local fscrypt_name_pass=$tmp/mnt/lustre/remote_dir/fscrypt_name_pass

	combined_mgs_mds || stop_mgs || error "Unable to stop MGS"
	trap 'trap - RETURN; t32_test_cleanup' RETURN

	load_modules
	nid=$($r $LCTL list_nids | head -1)

	mkdir -p $tmp/mnt/lustre || error "mkdir $tmp/mnt/lustre failed"
	$r mkdir -p $tmp/mnt/{mdt,mdt1,ost,ost1}
	$r tar xjvf $tarball -S -C $tmp || {
		error_noexit "Unpacking the disk image tarball"
		return 1
	}
	img_commit=$($r cat $tmp/commit)
	img_kernel=$($r cat $tmp/kernel)
	img_arch=$($r cat $tmp/arch)
	img_bspace=$($r cat $tmp/bspace)
	img_ispace=$($r cat $tmp/ispace)

	if (( $(version_code $img_commit) >= $(version_code 2.13.56) )); then
		img_bspace_pool=$($r cat $tmp/bspace_pool)
		img_blimit_pool=$($r cat $tmp/blimit_pool)
	else
		pool_quota_upgrade="no"
	fi

	# older images did not have "blimit" and "ilimit" files
	# use old values for T32_BLIMIT and T32_ILIMIT
	$r test -f $tmp/blimit && img_blimit=$($r cat $tmp/blimit) ||
		img_blimit=20480
	$r test -f $tmp/ilimit && img_ilimit=$($r cat $tmp/ilimit) ||
		img_ilimit=2

	echo "Upgrading from $(basename $tarball), created with:"
	echo "  Commit: $img_commit"
	echo "  Kernel: $img_kernel"
	echo "    Arch: $img_arch"
	echo "OST version: $(lustre_build_version ost1)"

	# The conversion can be made only when both of the following
	# conditions are satisfied:
	# - ost device img version < 2.3.64
	# - ost server version >= 2.5
	[ $(version_code $img_commit) -ge $(version_code 2.3.64) -o \
		"$OST1_VERSION" -lt $(version_code 2.5.0) ] &&
			ff_convert="no"

	! $r test -f $mdt2_dev || mdt2_is_available=true
	! $r test -f $ost2_dev || ost2_is_available=true

	if [[ "$mds1_FSTYPE" == zfs ]]; then
		echo "== fstype is zfs =="
		# import pool first
		local poolname
		local poolname_list="t32fs-mdt1 t32fs-ost1"

		! $mdt2_is_available || poolname_list+=" t32fs-mdt2"
		! $ost2_is_available || poolname_list+=" t32fs-ost2"

		for poolname in $poolname_list; do
			$r "modprobe zfs;
				$ZPOOL list -H $poolname >/dev/null 2>&1 ||
				$ZPOOL import -f -d $tmp $poolname"
		done

		# upgrade zpool to latest supported features, including
		# dnode quota accounting in 0.7.0
		$r "$ZPOOL upgrade -a"

		mdt_dev=t32fs-mdt1/mdt1
		ost_dev=t32fs-ost1/ost1
		! $mdt2_is_available || mdt2_dev=t32fs-mdt2/mdt2
		! $ost2_is_available || ost2_dev=t32fs-ost2/ost2
		wait_update_facet $SINGLEMDS "$ZPOOL list |
			awk '/^t32fs-mdt1/ { print \\\$1 }'" "t32fs-mdt1" || {
				error_noexit "import zfs pool failed"
				return 1
			}
	elif [ "$project_upgrade" != "no" ]; then
		echo "== project upgrade =="
		! $r tune2fs -O project $mdt_dev &&
			error_noexit "enable project on mdt0 failed" &&
				return 1
		$mdt2_is_available && ! $r tune2fs "-O project" $mdt2_dev &&
			error_noexit "enable project on mdt failed" &&
				return 1
		! $r tune2fs -O project $ost_dev &&
			error_noexit "enable project on ost failed" &&
				return 1
		$ost2_is_available && ! $r tune2fs -O project $ost2_dev &&
			error_noexit "enable project on ost2 failed" &&
				return 1
	fi

	$r $LCTL set_param debug="$PTLDEBUG"

	$r $TUNEFS --dryrun $mdt_dev || {
		$r losetup -a
		error_noexit "tunefs.lustre before mounting the MDT"
		return 1
	}

	if $mdt2_is_available; then
		$r $TUNEFS --dryrun $mdt2_dev || {
			$r losetup -a
			error_noexit "tunefs.lustre before mounting the MDT"
			return 1
		}
	fi

	if [ "$writeconf" ]; then
		echo "== writeconf mdt tunefs and quota =="
		mopts=writeconf
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
			$r $TUNEFS --quota $mdt_dev || {
				$r losetup -a
				error_noexit "Enable mdt quota feature"
				return 1
			}

			if [ "$project_quota_upgrade" != "no" ]; then
				echo "== enable mdt2 project quota =="
				$r $TUNE2FS -O project $mdt_dev || {
					$r losetup -a
					error_noexit "tune2fs $mdt_dev failed"
					return 1
				}
			fi

			if $mdt2_is_available; then
				$r $TUNEFS --quota $mdt2_dev || {
					$r losetup -a
					error_noexit "Enable mdt2 quota feature"
					return 1
				}
				if [ "$project_quota_upgrade" != "no" ]; then
					echo "== enable mdt2 project quota =="
					$r $TUNE2FS -O project $mdt2_dev || {
						$r losetup -a
						error_noexit \
						    "tune2fs $mdt2_dev failed"
						return 1
					}
				fi
			fi
		fi
	else
		echo "== replace nids =="
		if [ -n "$($LCTL list_nids | grep -v '\(tcp\|lo\)[[:digit:]]*$')" ]; then
			[[ "$MGS_VERSION" -ge $(version_code 2.3.59) ]] ||
			skip "LU-2200: Cannot run over IB w/o lctl replace_nids "
				"(Need MGS version at least 2.3.59)"
		fi

		local osthost=$(facet_active_host ost1)
		local ostnid=$(do_node $osthost $LCTL list_nids | head -1)

		mopts=nosvc
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
		fi
		$r $MOUNT_CMD -o $mopts $mdt_dev $tmp/mnt/mdt
		$r $LCTL replace_nids $fsname-OST0000 $ostnid || {
			$r $LCTL dl
			error_noexit "replace_nids $fsname-OST0000 $ostnid failed"
			return 1
		}
		if $ost2_is_available; then
			$r $LCTL replace_nids $fsname-OST0001 $ostnid || {
				$r $LCTL dl
				error_noexit "replace_nids $fsname-OST0001 $ostnid failed"
				return 1
			}
		fi
		$r $LCTL replace_nids $fsname-MDT0000 $nid || {
			$r $LCTL dl
			error_noexit "replace_nids $fsname-MDT0000 $nid failed"
			return 1
		}
		if $mdt2_is_available; then
			$r $LCTL replace_nids $fsname-MDT0001 $nid || {
				$r $LCTL dl
				error_noexit "replace_nids $fsname-MDT0001 $nid failed"
				return 1
			}
		fi
		$r $UMOUNT $tmp/mnt/mdt

		mopts=exclude=$fsname-OST0000
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
		fi
	fi

	t32_wait_til_devices_gone $node

	$r $MOUNT_CMD -o $mopts $mdt_dev $tmp/mnt/mdt || {
		$r losetup -a
		error_noexit "Mounting the MDT"
		return 1
	}
	shall_cleanup_mdt=true

	if $mdt2_is_available; then
		echo "== mdt2 available =="
		mopts=mgsnode=$nid,$mopts
		$r $MOUNT_CMD -o $mopts $mdt2_dev $tmp/mnt/mdt1 || {
			$r losetup -a
			error_noexit "Mounting the MDT"
			return 1
		}
		shall_cleanup_mdt1=true
		echo "== mount new MDT $mdt2_dev =="

		$r $LCTL set_param -n mdt.${fsname}*.enable_remote_dir=1 || {
			error_noexit "enable remote dir create failed"
			return 1
		}

	elif [ "$dne_upgrade" != "no" ]; then
		local fs2mdsdev=$(mdsdevname 1_2)
		local fs2mdsvdev=$(mdsvdevname 1_2)

		echo "== mkfs new MDT on ${fs2mdsdev} =="
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mkfsoptions="--mkfsoptions=\\\"-J size=8\\\""
		fi

		add $SINGLEMDS $(mds2failover_HOST="" \
			mkfs_opts mds2 $fs2mdsdev $fsname) --reformat \
			$mkfsoptions $fs2mdsdev $fs2mdsvdev > /dev/null || {
			error_noexit "Mkfs new MDT failed"
			return 1
		}

		[[ "$mds1_FSTYPE" != zfs ]] || import_zpool mds1

		$r $TUNEFS --dryrun $fs2mdsdev || {
			error_noexit "tunefs.lustre before mounting the MDT"
			return 1
		}

		echo "== mount new MDT....$fs2mdsdev =="
		$r $MOUNT_CMD -o $mopts $fs2mdsdev $tmp/mnt/mdt1 || {
			error_noexit "mount mdt1 failed"
			return 1
		}

		$r $LCTL set_param -n mdt.${fsname}*.enable_remote_dir=1 ||
			error_noexit "enable remote dir create failed"

		shall_cleanup_mdt1=true
	fi

	uuid=$($r $LCTL get_param -n mdt.$fsname-MDT0000.uuid) || {
		error_noexit "Getting MDT UUID"
		return 1
	}
	if [ "$uuid" != $fsname-MDT0000_UUID ]; then
		error_noexit "Unexpected MDT UUID: \"$uuid\""
		return 1
	fi

	$r $TUNEFS --dryrun $ost_dev || {
		error_noexit "tunefs.lustre before mounting the OST"
		return 1
	}

	if $ost2_is_available; then
		$r $TUNEFS --dryrun $ost2_dev || {
			error_noexit "tunefs.lustre before mounting the OST"
			return 1
		}
	fi

	if [ "$writeconf" ]; then
		echo "== writeconf and ost quota tunefs =="
		mopts=mgsnode=$nid,$writeconf
		if [ "$ost1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
			$r $TUNEFS --quota $ost_dev || {
				$r losetup -a
				error_noexit "Enable ost quota feature"
				return 1
			}

			if [ "$project_quota_upgrade" != "no" ]; then
				echo "== enable ost project quota =="
				$r $TUNE2FS -O project $ost_dev || {
					$r losetup -a
					error_noexit "tune2fs $ost_dev failed"
					return 1
				}
			fi

			if $ost2_is_available; then
				$r $TUNEFS --quota $ost2_dev || {
					$r losetup -a
					error_noexit "Enable ost2 quota feature"
					return 1
				}
				if [ "$project_quota_upgrade" != "no" ]; then
					echo "== enable ost2 project quota =="
					$r $TUNE2FS -O project $ost2_dev || {
						$r losetup -a
						error_noexit \
						"tune2fs $ost2_dev failed"
						return 1
					}
				fi
			fi
		fi
	else
		mopts=mgsnode=$nid
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
		fi
	fi

	$r $MOUNT_CMD -onomgs -o$mopts $ost_dev $tmp/mnt/ost || {
		error_noexit "Mounting the OST"
		return 1
	}

	if $ost2_is_available; then
		$r $MOUNT_CMD -onomgs -o$mopts $ost2_dev $tmp/mnt/ost1 || {
			error_noexit "Mounting the OST2"
			return 1
		}
		shall_cleanup_ost1=true
	fi

	shall_cleanup_ost=true

	uuid=$($r $LCTL get_param -n obdfilter.$fsname-OST0000.uuid) || {
		error_noexit "Getting OST UUID"
		return 1
	}
	if [ "$uuid" != $fsname-OST0000_UUID ]; then
		error_noexit "Unexpected OST UUID: \"$uuid\""
		return 1
	fi

	if $ost2_is_available; then
		uuid=$($r $LCTL get_param -n obdfilter.$fsname-OST0001.uuid) ||{
			error_noexit "Getting OST1 UUID"
			return 1
		}
		if [ "$uuid" != $fsname-OST0001_UUID ]; then
			error_noexit "Unexpected OST1 UUID: \"$uuid\""
			return 1
		fi
	fi

	if [[ $PERM_CMD =~ "set_param" ]]; then
		echo "== perm cmd = '$PERM_CMD' =="
		$r $PERM_CMD osc.$fsname-OST0000*.import=connection=$nid || {
			error_noexit "Setting OST \"failover.node\""
			return 1
		}
		$r $PERM_CMD mdc.$fsname-MDT0000*.import=connection=$nid || {
			error_noexit "Setting MDT \"failover.node\""
			return 1
		}
		$r $PERM_CMD osc.$fsname-OST0000-*.max_dirty_mb=15 || {
			error_noexit "Setting \"max_dirty_mb\""
			return 1
		}
		$r $PERM_CMD mdc.$fsname-MDT0000-*.max_rpcs_in_flight=9 || {
			error_noexit "Setting \"max_rpcs_in_flight\""
			return 1
		}
		$r $PERM_CMD lov.$fsname-MDT0000-*.stripesize=4M || {
			error_noexit "Setting \"lov.stripesize\""
			return 1
		}
		$r $PERM_CMD mdd.$fsname-MDT0000-*.atime_diff=70 || {
			error_noexit "Setting \"mdd.atime_diff\""
			return 1
		}
	else
		echo "== perm cmd = '$PERM_CMD' =="
		$r $PERM_CMD $fsname-OST0000.failover.node=$nid || {
			error_noexit "Setting OST \"failover.node\""
			return 1
		}

		$r $PERM_CMD $fsname-MDT0000.failover.node=$nid || {
			error_noexit "Setting MDT \"failover.node\""
			return 1
		}

		$r $PERM_CMD $fsname-OST0000.osc.max_dirty_mb=15 || {
			error_noexit "Setting \"max_dirty_mb\""
			return 1
		}
		$r $PERM_CMD $fsname-MDT0000.mdc.max_rpcs_in_flight=9 || {
			error_noexit "Setting \"max_rpcs_in_flight\""
			return 1
		}
		$r $PERM_CMD $fsname-MDT0000.lov.stripesize=4M || {
			error_noexit "Setting \"lov.stripesize\""
			return 1
		}
		$r $PERM_CMD $fsname-MDT0000.mdd.atime_diff=70 || {
			error_noexit "Setting \"mdd.atime_diff\""
			return 1
		}
	fi

	$r $LCTL pool_new $fsname.interop || {
		error_noexit "Setting \"interop\""
		return 1
	}

	if [ "$ff_convert" != "no" -a "$ost1_FSTYPE" == ldiskfs ]; then
		echo "== ff convert ($ff_convert) =="
		$r $LCTL lfsck_start -M $fsname-OST0000 || {
			error_noexit "Start OI scrub on OST0"
			return 1
		}

		# The oi_scrub should be on ost1, but for test_32(),
		# all on the SINGLEMDS.
		wait_update_facet $SINGLEMDS "$LCTL get_param -n \
			osd-ldiskfs.$fsname-OST0000.oi_scrub |
			awk '/^status/ { print \\\$2 }'" "completed" 30 || {
			error_noexit "Failed to get the expected 'completed'"
			return 1
		}

		local UPDATED=$($r $LCTL get_param -n \
				osd-ldiskfs.$fsname-OST0000.oi_scrub |
				awk '/^updated/ { print $2 }')
		[ $UPDATED -ge 1 ] || {
			error_noexit "Only $UPDATED objects have been converted"
			return 1
		}
	fi

	if [[ "$dne_upgrade" != "no" ]] || $mdt2_is_available; then
		echo "== dne upgrate ($dne_upgrade) or mdt2 available =="
		if [[ $PERM_CMD =~ "set_param" ]]; then
			$r $PERM_CMD mdc.$fsname-MDT0001*.import=connection=$nid || {
				error_noexit "Setting MDT1 \"failover.node\""
				return 1
			}

			$r $PERM_CMD mdc.$fsname-MDT0001-*.max_rpcs_in_flight=9 || {
				error_noexit "Setting MDT1 \"max_rpcs_in_flight\""
				return 1
			}
			$r $PERM_CMD lov.$fsname-MDT0001-*.stripesize=4M || {
				error_noexit "Setting MDT1 \"lov.stripesize\""
				return 1
			}
		else
			$r $PERM_CMD $fsname-MDT0001.failover.node=$nid || {
				error_noexit "Setting MDT1 \"failover.node\""
				return 1
			}
			$r $PERM_CMD $fsname-MDT0001.mdc.max_rpcs_in_flight=9 || {
				error_noexit "Setting MDT1 \"max_rpcs_in_flight\""
				return 1
			}
			$r $PERM_CMD $fsname-MDT0001.lov.stripesize=4M || {
				error_noexit "Setting MDT1 \"lov.stripesize\""
				return 1
			}
		fi
	fi

	if [ "$writeconf" ]; then
		echo "== writeconf and client mount =="
		$MOUNT_CMD $nid:/$fsname -o user_xattr $tmp/mnt/lustre || {
			error_noexit "Mounting the client"
			return 1
		}

		shall_cleanup_lustre=true
		$r $LCTL set_param debug="$PTLDEBUG"

		# OST pool quota #
		$mdt2_is_available || pool_dir=$tmp/mnt/lustre/pool_dir
		local pool_list=$pool_dir/pool_list
		if (( $(version_code $img_commit) >=
		      $(version_code 2.13.56) )) &&
		   [[ "$pool_quota_upgrade" == "yes" ]] &&
		   [[ -s $pool_list ]]; then
			local pool_name=$(head -1 $pool_list | awk '{print $2}')

			FSNAME=$fsname pool_add ${pool_name##$fsname.} 2 || {
				error_noexit "create $pool_name failed"
				return 1
			}

			FSNAME=$fsname pool_add_targets ${pool_name##$fsname.} \
				0 1 1 2 || {
				error_noexit "add $pool_name failed"
				return 1
			}

			$r $LCTL pool_list $pool_name || {
				error_noexit "list $pool_name failed"
				return 1
			}
		fi

		t32_verify_quota $SINGLEMDS $fsname $tmp/mnt/lustre || {
			error_noexit "verify quota failed"
			return 1
		}

		# fscrypt file data #
		if ! $mdt2_is_available; then
			fscrypt_data_dir=$tmp/mnt/lustre/fscrypt_data_dir
			fscrypt_data_pass=$tmp/mnt/lustre/fscrypt_data_pass
		fi
		if (( $MDS1_VERSION >= $(version_code 2.13.55) )) &&
			which fscrypt && [[ -s $fscrypt_data_pass ]]; then

			yes | fscrypt setup --force --verbose ||
				error "fscrypt global setup failed"
			sed -i 's/\(.*\)policy_version\(.*\):\(.*\)\"[0-9]*\"\(.*\)/\1policy_version\2:\3"2"\4/' \
				/etc/fscrypt.conf

			local unlock_status=$(fscrypt status $fscrypt_data_dir |
					      awk '/Unlocked:/{print $2}')

			if [[ $unlock_status == No ]]; then
				local lockedfiles=( $(find $fscrypt_data_dir/ \
						      -maxdepth 1 -type f) )

				for ((i = 0; i < ${#lockedfiles[@]}; i++)); do
					! md5sum ${lockedfiles[i]} ||
						error "read ${lockedfiles[i]} should fail without key"
				done

				! touch $fscrypt_data_dir/nokey ||
					error "touch $fscrypt_data_dir/nokey should fail without key"

				cat $fscrypt_data_pass |
				fscrypt unlock --verbose $fscrypt_data_dir ||
					error "unlock $fscrypt_data_dir failed"

				for ((i = 0; i < ${#lockedfiles[@]}; i++)); do
					md5sum ${lockedfiles[i]} ||
						error "read ${lockedfiles[i]} failed"
				done
			fi
		fi

		# fscrypt file name #
		if ! $mdt2_is_available; then
			fscrypt_name_dir=$tmp/mnt/lustre/fscrypt_name_dir
			fscrypt_name_pass=$tmp/mnt/lustre/fscrypt_name_pass
		fi
		if (( $MDS1_VERSION >= $(version_code 2.14.57) )) &&
			which fscrypt && [[ -s $fscrypt_name_pass ]]; then

			local unlock_status=$(fscrypt status $fscrypt_name_dir |
					      awk '/Unlocked:/{print $2}')

			if [[ $unlock_status == No ]]; then
				ls -l $fscrypt_name_dir ||
					error "ls $fscrypt_name_dir failed"
				! ls $fscrypt_name_dir/fscrypt_name_file ||
					error "ls $fscrypt_name_dir/fscrypt_name_file should fail"
				! ls $fscrypt_name_dir/fscrypt_name_dom ||
					error "ls $fscrypt_name_dir/fscrypt_name_dom should fail"

				cat $fscrypt_name_pass |
				fscrypt unlock --verbose $fscrypt_name_dir ||
					error "unlock $fscrypt_name_dir failed"

				ls $fscrypt_name_dir/fscrypt_name_file ||
					error "ls $fscrypt_name_dir/fscrypt_name_file failed"
				ls $fscrypt_name_dir/fscrypt_name_dom ||
					error "ls $fscrypt_name_dir/fscrypt_name_dom failed"
			fi
		fi

		if $r test -f $tmp/list; then
			echo "== list verification =="
			#
			# There is not a Test Framework API to copy files to or
			# from a remote node.
			#
			# LU-2393 - do both sorts on same node to ensure locale
			# is identical
			local list_file=$tmp/list

			if $mdt2_is_available; then
				if [[ -d $tmp/mnt/lustre/striped_dir_old ]] &&
				   $r test -f $tmp/list2; then
					list_file=$tmp/list2
					pushd $tmp/mnt/lustre/striped_dir_old
				else
					pushd $tmp/mnt/lustre/remote_dir
				fi
			else
				pushd $tmp/mnt/lustre
			fi
			$r cat $list_file | sort -k 6 >$tmp/list.orig
			BLOCKSIZE=1024 ls -Rni --time-style=+%s | sort -k 6 |
				sed 's/\. / /' >$tmp/list || {
				error_noexit "ls"
				return 1
			}
			popd
			#
			# 32-bit and 64-bit clients use different algorithms to
			# convert FIDs into inode numbers.  Hence, remove the
			# inode numbers from the lists, if the original list was
			# created on an architecture with different number of
			# bits per "long".
			#
			if [ $(t32_bits_per_long $(uname -m)) != \
				$(t32_bits_per_long $img_arch) ]; then
				echo "Different number of bits per \"long\"" \
				     "from the disk image"
				for list in list.orig list; do
					sed -i -e 's/^[0-9]\+[ \t]\+//' \
						  $tmp/$list
				done
			fi
			if ! diff -ub $tmp/list.orig $tmp/list; then
				error_noexit "list verification failed"
				return 1
			fi
		else
			echo "== list verification skipped =="
		fi

		#non-dom upgrade to dom
		if [ "$dom_upgrade" != "no" ]; then
			echo "== dom upgrade =="
			$LFS setstripe -E 1M -L mdt -E EOF $tmp/mnt/lustre/dom || {
				error_noexit "Verify DoM creation"
				return 1
			}
			[ $($LFS getstripe -L $tmp/mnt/lustre/dom) == "mdt" ] || {
				error_noexit "Verify a DoM file"
				return 1
			}
			dd if=/dev/urandom of=$tmp/mnt/lustre/dom bs=4096 \
				count=1 conv=fsync || {
				error_noexit "Cannot write to DoM file"
				return 1
			}
			[ $(stat -c%s $tmp/mnt/lustre/dom) == 4096 ] || {
				error_noexit "DoM: bad size after write"
				return 1
			}
			rm $tmp/mnt/lustre/dom

			set_persistent_param_and_check mds \
			   "lod.*MDT0000*.dom_stripesize" \
			   "$fsname-MDT0000.lod.dom_stripesize" 0 || {
				error_noexit "Changing \"dom_stripesize\""
				return 1
			}
		fi

		#dom upgrade
		#$LFS setstripe -E 1M -L mdt -E -1 -S 4M $dom_file
		if [ "$dom_new_upgrade" != "no" ]; then
			if ! $mdt2_is_available; then
				dom_file=$tmp/mnt/lustre/dom_dir/dom_file
			fi
			echo "== check DoM file can be accessed =="
			[ $($LFS getstripe -I1 -L $dom_file) == "mdt" ] || {
				error_noexit "Verify a DoM file"
				return 1
			}
			[ $(stat -c%s $dom_file) == $((2 * 1024 * 1024)) ] || {
				error_noexit "DoM: bad size after write"
				return 1
			}
		fi

		if [ "$flr_upgrade" != "no" ]; then
			if ! $mdt2_is_available; then
				flr_file=$tmp/mnt/lustre/flr_dir/flr_file
			fi
			local mirror_count=$($LFS getstripe -N $flr_file)
			echo "== check FLR file =="
			[ $mirror_count == 2 ] || {
				error_noexit "FLR mirror count wrong"
				return 1
			}
		fi

		if [ "$dne_upgrade" != "no" ]; then
			echo "== dne upgrade striped_dir  =="
			$LFS mkdir -i 1 -c2 $tmp/mnt/lustre/striped_dir || {
				error_noexit "set striped dir failed"
				return 1
			}
			$LFS setdirstripe -D -c2 $tmp/mnt/lustre/striped_dir

			pushd $tmp/mnt/lustre
			tar -c --exclude=./striped_dir \
				--exclude=./striped_dir_old \
				--exclude=./remote_dir -f - .|
				tar -xvf - -C striped_dir 1>/dev/null || {
				error_noexit "cp to striped dir failed"
				return 1
			}
			popd
		fi

		if [ "$pfl_upgrade" != "no" ]; then
			local comp_size
			local comp_cnt
			local stripe_size
			local stripe_cnt
			local comp_id

			echo "== check PFL file =="
			if ! $mdt2_is_available; then
				pfl_file=$tmp/mnt/lustre/pfl_dir/pfl_file
			fi
			comp_cnt=$($LFS getstripe --component-count $pfl_file)
			[ $comp_cnt == 2 ] || {
				error_noexit "wrong comp_cnt $comp_cnt"
				return 1
			}

			comp_size=$($LFS getstripe -I1 -E $pfl_file)
			[ $comp_size == 2097152 ] || {
				error_noexit "wrong component size $comp_size"
				return 1
			}

			comp_id=$($LFS getstripe -I1 -i $pfl_file)
			[ $comp_id == 0 ] || {
				error_noexit "wrong comp id $comp_id"
				return 1
			}

			comp_id=$($LFS getstripe -I2 -i $pfl_file)
			[ $comp_id -eq 1 ] || {
				error_noexit "wrong comp id $comp_id"
				return 1
			}

			stripe_size=$($LFS getstripe -I1 -S $pfl_file)
			[ $stripe_size -eq 1048576 ] || {
				error_noexit "wrong stripe size $stripe_size"
				return 1
			}

			stripe_size=$($LFS getstripe -I2 -S $pfl_file)
			[ $comp_size -eq 2097152 ] || {
				error_noexit "wrong component size $comp_size"
				return 1
			}
		fi

		local large_xattr_dir=$tmp/mnt/lustre/large_xattr_test_dir

		if [[ -d $large_xattr_dir ]]; then
			echo "== check Large EA =="
			local xattr_file=$large_xattr_dir/large_xattr_file

			xattr_val=$(getfattr --only-values\
				-n user.fooattr $xattr_file) || {
				error_noexit "Large EA cannot be read"
				return 1
			}

			[[ $xattr_val == $(printf "%c" {1..4096}) ]] || {
				error_noexit "Wrong large EA value"
				return 1;
			}
		fi

		if [ "$project_quota_upgrade" != "no" ]; then
			if ! $mdt2_is_available; then
				quota_dir=$tmp/mnt/lustre/project_quota_dir
			fi
			local hardlimit

			echo "== check Project Quota =="
			hardlimit=$(get_project_quota -p $T32_PRJID global 3 \
							${tmp}/mnt/lustre)
			[ $hardlimit == $T32_PROLIMIT ] || {
				error_noexit "wrong hardlimit $hardlimit"
				return 1
			}
		fi

		# OST pool #
		$mdt2_is_available || pool_dir=$tmp/mnt/lustre/pool_dir
		local pool_list=$pool_dir/pool_list
		local pool_file=$pool_dir/pool_file
		if (( $(version_code $img_commit) >=
		      $(version_code 2.13.56) )) &&
		   [[ "$pool_quota_upgrade" == "yes" ]] &&
		   [[ -s $pool_list ]]; then
			local pool_name=$(head -1 $pool_list | awk '{print $2}')
			local act_pool_list=$tmp/pool_list

			$r "$LCTL pool_list $pool_name" > $act_pool_list || {
				rm -f $act_pool_list
				error_noexit "pool_list $pool_name failed"
				return 1
			}

			cmp --verbose $pool_list $act_pool_list || {
				rm -f $act_pool_list
				error_noexit "OST pool list, act:$act_pool_list, exp:$pool_list"
				return 1
			}
			rm -f $act_pool_list

			local exp_qpool=${pool_name##$fsname.}
			local act_qpool=$($LFS getstripe -p $pool_file)
			[[ -n "$act_qpool" ]] || {
				error_noexit "no OST pool on $pool_file"
				return 1
			}

			[[ "$act_qpool" == "$exp_qpool" ]] || {
				error_noexit "OST pool name, act:$act_qpool, exp:$exp_qpool"
				return 1
			}
		fi

		# If it is upgrade from DNE (2.5), then rename the remote dir,
		# which is created in 2.5 to striped dir.
		if $mdt2_is_available && [[ "$dne_upgrade" != "no" ]]; then
			echo "== rename remote_dir =="
			stripe_index=$($LFS getdirstripe -i	\
				       $tmp/mnt/lustre/remote_dir)

			[[ $stripe_index -eq 1 ]] || {
				error_noexit "get index \"$stripe_index\"" \
					     "from remote dir failed"
				return 1
			}
			mv $tmp/mnt/lustre/remote_dir	\
				$tmp/mnt/lustre/striped_dir/ || {
				error_noexit "mv remote dir failed"
				return 1
			}
		fi

		# If it is upgraded from DNE (2.7), then move the striped dir
		# which was created in 2.7 to the new striped dir.
		if $mdt2_is_available && [[ "$dne_upgrade" != "no" ]] &&
			echo "== rename striped dir =="
			[[ -d $tmp/mnt/lustre/striped_dir_old ]]; then
			stripe_count=$($LFS getdirstripe -c	\
				       $tmp/mnt/lustre/striped_dir_old)
			[[ $stripe_count -eq 2 ]] || {
				error_noexit "get count $stripe_count" \
					     "from striped dir failed"
				return 1
			}
			mv $tmp/mnt/lustre/striped_dir_old	\
				$tmp/mnt/lustre/striped_dir/ || {
				error_noexit "mv striped dir failed"
				return 1
			}
		fi

		sync; sleep 5; sync
		$r $LCTL set_param -n osd*.*.force_sync=1
		dd if=/dev/zero of=$tmp/mnt/lustre/tmp_file bs=10k count=10 || {
			error_noexit "dd failed"
			return 1
		}
		rm -rf $tmp/mnt/lustre/tmp_file || {
			error_noexit "rm failed"
			return 1
		}

		if $r test -f $tmp/sha1sums; then
			echo "== checking sha1sums =="
			# LU-2393 - do both sorts on same node to ensure locale
			# is identical
			$r cat $tmp/sha1sums | sort -k 2 >$tmp/sha1sums.orig
			which fscrypt ||
				sed -i '/fscrypt_.*_dir/d' $tmp/sha1sums.orig
			if [[ "$dne_upgrade" != "no" ]]; then
				if [[ -d $tmp/mnt/lustre/striped_dir/remote_dir ]]; then
					pushd $tmp/mnt/lustre/striped_dir/remote_dir
				else
					pushd $tmp/mnt/lustre/striped_dir
				fi
			elif [[ "$pfl_upgrade" != "no" ]] ||
				[[ "$flr_upgrade" != "no" ]] ||
				[[ "$dom_new_upgrade" != "no" ]] ||
				[[ "$project_quota_upgrade" != "no" ]] ||
				[[ -d $tmp/mnt/lustre/remote_dir ]]; then
				pushd $tmp/mnt/lustre/remote_dir
			else
				pushd $tmp/mnt/lustre
			fi

			find ! -path "*remote_dir*" ! -path "*striped_dir*" \
			     ! -name .lustre -type f -exec sha1sum {} \; |
				sort -k 2 >$tmp/sha1sums || {
				popd
				error_noexit "sha1sum"
				return 1
			}
			local save=$PWD

			popd
			if ! diff -ub $tmp/sha1sums.orig $tmp/sha1sums; then
				echo "==** find $save files start **=="
				find $save -type f -ls
				echo "==** find $save files finish **=="
				error_noexit "sha1sum verification failed"
				return 1
			fi

			# if upgrade from DNE(2.5), then check remote directory
			# if upgrade from DNE(2.7), then check striped directory
			if $mdt2_is_available &&
			   [[ "$dne_upgrade" != "no" ]]; then
				echo "== mdt2 upgrade sha1sum check =="
				local new_dir="$tmp/mnt/lustre/striped_dir"
				local striped_dir_old="$new_dir/striped_dir_old"

				local dir_list="$new_dir/remote_dir"
				[[ ! -d $triped_dir_old ]] ||
					dir_list+=" $striped_dir_old"

				for dir in $dir_list; do
					echo "== dir = $dir =="
					pushd $dir
					find ! -name .lustre -type f \
						-exec sha1sum {} \; |
						sort -k 2 >$tmp/sha1sums || {
							ls -alR
							popd
							error_noexit "sha1sum"
							return 1
						}
					popd
					if ! diff -ub $tmp/sha1sums.orig \
						$tmp/sha1sums; then
						ls -alR $dir
						error_noexit "sha1sum $dir" \
							     "failed"
						return 1
					fi
				done
			fi
		else
			echo "== sha1sum verification skipped =="
		fi

		# PFL write test after sha1sum check
		if [ "$pfl_upgrade" != "no" ]; then
			local rw_len=$((3 * 1034 * 1024))

			if ! $mdt2_is_available; then
				pfl_file=$tmp/mnt/lustre/pfl_dir/pfl_file
			fi
			small_write $pfl_file $rw_len || {
				error_noexit "PFL RW Failed"
				return 1
			}
		fi

		if [ "$dne_upgrade" != "no" ]; then
			rm -rf $tmp/mnt/lustre/striped_dir || {
				error_noexit "remove remote dir failed"
				return 1
			}
		fi

		# migrate files/dirs to remote MDT, then move them back
		if [ "$MDS1_VERSION" -ge $(version_code 2.7.50) -a \
		     $dne_upgrade != "no" ]; then
			$r $LCTL set_param -n	\
				mdt.${fsname}*.enable_remote_dir=1 2>/dev/null

			echo "== test migration =="
			pushd $tmp/mnt/lustre
			for dir in $(find ! -name .lustre ! -name . -type d); do
				mdt_index=$($LFS getdirstripe -i $dir)
				stripe_cnt=$($LFS getdirstripe -c $dir)
				if [ $mdt_index = 0 -a $stripe_cnt -le 1 ]; then
					$LFS migrate -m 1 $dir || {
					popd
					error_noexit "migrate MDT1 failed"
					return 1
				}
				fi
			done

			for dir in $(find ! -name . ! -name .lustre -type d); do
				mdt_index=$($LFS getdirstripe -i $dir)
				stripe_cnt=$($LFS getdirstripe -c $dir)
				if [ $mdt_index = 1 -a $stripe_cnt -le 1 ]; then
					$LFS migrate -m 0 $dir || {
					popd
					error_noexit "migrate MDT0 failed"
					return 1
				}
				fi
			done
			popd
		fi

		#
		# When adding new data verification tests, please check for
		# the presence of the required reference files first, like
		# the "sha1sums" and "list" tests above, to avoid the need to
		# regenerate every image for each test addition.
		#

		nrpcs_orig=$($LCTL get_param \
				-n mdc.*MDT0000*.max_rpcs_in_flight) || {
			error_noexit "Getting \"max_rpcs_in_flight\""
			return 1
		}
		nrpcs=$((nrpcs_orig + 5))

		set_persistent_param_and_check client \
		   "mdc.$fsname-MDT0000*.max_rpcs_in_flight" \
		   "$fsname-MDT0000.mdc.max_rpcs_in_flight" $nrpcs || {
			error_noexit "Changing \"max_rpcs_in_flight\""
			return 1
		}

		umount $tmp/mnt/lustre || {
			error_noexit "Unmounting the client"
			return 1
		}
		shall_cleanup_lustre=false
	else
		$MOUNT_CMD $nid:/$fsname $tmp/mnt/lustre || {
			error_noexit "Mounting the client"
			return 1
		}

		if [ "$mds1_FSTYPE" == ldiskfs -a \
		    "$project_upgrade" != "no" ]; then
			! $LFS project -d -p 1 $tmp/mnt/lustre/* &&
				error_noexit "set project failed" &&
					return 1
		fi

		wait_update_facet mds1 "pgrep orph_.*-MDD | wc -l" "0" ||
			error "MDD orphan cleanup thread not quit"

		umount $tmp/mnt/lustre || {
			error_noexit "Unmounting the client"
			return 1
		}

		if [[ "$dne_upgrade" != "no" ]] || $mdt2_is_available; then
			$r $UMOUNT $tmp/mnt/mdt1 || {
				error_noexit "Unmounting the MDT2"
				return 1
			}
			if [[ "$mds1_FSTYPE" == zfs ]]; then
			    $r "$ZPOOL export t32fs-mdt2"
			fi
			shall_cleanup_mdt1=false
		fi

		$r $UMOUNT $tmp/mnt/mdt || {
			error_noexit "Unmounting the MDT"
			return 1
		}
		if [[ "$mds1_FSTYPE" == zfs ]]; then
		    $r "$ZPOOL export t32fs-mdt1"
		fi
		shall_cleanup_mdt=false

		$r $UMOUNT $tmp/mnt/ost || {
			error_noexit "Unmounting the OST"
			return 1
		}
		if $ost2_is_available; then
			$r $UMOUNT $tmp/mnt/ost1 || {
				error_noexit "Unmounting the OST1"
				return 1
			}
			shall_cleanup_ost1=false
		fi

		if [[ $ost1_FSTYPE == zfs ]]; then
			$r "$ZPOOL export t32fs-ost1"
			if $ost2_is_available; then
				$r "$ZPOOL export t32fs-ost2"
			fi
		fi
		shall_cleanup_ost=false

		t32_reload_modules $node || {
			error_noexit "Reloading modules"
			return 1
		}

		if [[ "$mds1_FSTYPE" == zfs ]]; then
			local poolname=t32fs-mdt1
			$r "modprobe zfs;
			    $ZPOOL list -H $poolname >/dev/null 2>&1 ||
				$ZPOOL import -f -d $tmp $poolname"

			# upgrade zpool to latest supported features,
			# including dnode quota accounting in 0.7.0
			$r "$ZPOOL upgrade $poolname"
		fi

		# mount a second time to make sure we didnt leave upgrade flag on
		$r $TUNEFS --dryrun $mdt_dev || {
			$r losetup -a
			error_noexit "tunefs.lustre before remounting the MDT"
			return 1
		}

		mopts=exclude=$fsname-OST0000
		if [ "$mds1_FSTYPE" == ldiskfs ]; then
			mopts="loop,$mopts"
		fi
		$r $MOUNT_CMD -o $mopts $mdt_dev $tmp/mnt/mdt || {
			error_noexit "Remounting the MDT"
			return 1
		}
		shall_cleanup_mdt=true
	fi
}

test_32a() {
	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		banner "testing $tarball upgrade"
		t32_test $tarball || let "rc += $?"
	done
	return $rc
}
run_test 32a "Upgrade (not live)"

test_32b() {
	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		banner "testing $tarball upgrade with writeconf"
		t32_test $tarball writeconf || let "rc += $?"
	done
	return $rc
}
run_test 32b "Upgrade with writeconf"

test_32c() {
	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		banner "testing $tarball upgrade with DNE"
		load_modules
		dne_upgrade=yes t32_test $tarball writeconf || rc=$?
	done
	return $rc
}
run_test 32c "dne upgrade test"

test_32d() {
	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		banner "testing $tarball with filter_fid upgrade"
		ff_convert=yes t32_test $tarball || rc=$?
	done
	return $rc
}
run_test 32d "convert filter_fid upgrade test"

test_32e() {
	[[ "$MDS1_VERSION" -ge $(version_code 2.10.56) ]] ||
		skip "Need MDS version at least 2.10.56"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ "$tarball" =~ "2_9" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		#load_modules
		banner "testing $tarball upgrade with DoM"
		dom_upgrade=yes t32_test $tarball writeconf || let "rc += $?"
	done
	return $rc
}
run_test 32e "dom upgrade test"

test_32f() {
	[[ $MDS1_VERSION -ge $(version_code 2.10.56) ]] ||
		skip "Need MDS version at least 2.10.56"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ "$tarball" =~ "2_10" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		pfl_upgrade=yes project_quota_upgrade=yes \
		t32_test $tarball writeconf || let "rc += $?"
	done
	return $rc
}
run_test 32f "pfl upgrade test"

test_32g() {
	[[ $MDS1_VERSION -ge $(version_code 2.10.56) ]] ||
		skip "Need MDS version at least 2.10.56"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ $tarball =~ "2_12" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		flr_upgrade=yes dom_new_upgrade=yes \
		t32_test $tarball writeconf || let "rc += $?"
	done
	return $rc
}
run_test 32g "flr/dom upgrade test"

test_32h() {
	(( $MDS1_VERSION >= $(version_code 2.13.56) )) ||
		skip "Need MDS >= 2.13.56 for OST pool quotas"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ $tarball =~ "2_15" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		pool_quota_upgrade=yes t32_test $tarball writeconf ||
			let "rc += $?"
	done
	return $rc
}
run_test 32h "pool quota upgrade test"

test_32i() {
	(( $MDS1_VERSION >= $(version_code 2.13.55) )) ||
		skip "Need MDS >= 2.13.55 for fscrypt data encryption"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ $tarball =~ "2_15" && $tarball =~ "ldiskfs" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		fscrypt_data_upgrade=yes t32_test $tarball writeconf ||
			let "rc += $?"
	done
	return $rc
}
run_test 32i "fscrypt data encryption upgrade test"

test_32j() {
	(( $MDS1_VERSION >= $(version_code 2.14.57) )) ||
		skip "Need MDS >= 2.14.56 for fscrypt filename encryption"

	local tarballs
	local tarball
	local rc=0

	t32_check
	for tarball in $tarballs; do
		[[ $tarball =~ "2_15" && $tarball =~ "ldiskfs" ]] ||
			{ echo "skip $(basename $tarball)"; continue; }
		fscrypt_name_upgrade=yes t32_test $tarball writeconf ||
			let "rc += $?"
	done
	return $rc
}
run_test 32j "fscrypt filename encryption upgrade test"

test_33a() { # bug 12333, was test_33
	local FSNAME2=test-$testnum

	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})
	local mkfsoptions

	[ -n "$ost1_HOST" ] && fs2ost_HOST=$ost1_HOST

	if [ -z "$fs2ost_DEV" -o -z "$fs2mds_DEV" ]; then
		local dev=${SINGLEMDS}_dev
		local MDSDEV=${!dev}

		is_blkdev $SINGLEMDS $MDSDEV &&
			skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)

	if [ "$mds1_FSTYPE" == ldiskfs ]; then
		mkfsoptions="--mkfsoptions=\\\"-J size=8\\\"" # See bug 17931.
	fi

	if combined_mgs_mds; then
		local mgs_flag="--mgs"
	fi

	add fs2mds $(mkfs_opts mds1 ${fs2mdsdev}) --fsname=${FSNAME2} \
		--reformat $mgs_flag $mkfsoptions $fs2mdsdev $fs2mdsvdev ||
		exit 10
	add fs2ost $(mkfs_opts ost1 ${fs2ostdev}) --mgsnode=$MGSNID \
		--fsname=${FSNAME2} --index=0x1fff --reformat $fs2ostdev \
		$fs2ostvdev || exit 10

	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS && trap cleanup_fs2 EXIT INT
	start fs2ost $fs2ostdev $OST_MOUNT_OPTS

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs "$PERM_CMD timeout=200" ||
			error "$PERM_CMD timeout=200 failed"
	else
		do_facet mgs "$PERM_CMD $FSNAME2.sys.timeout=200" ||
			error "$PERM_CMD $FSNAME2.sys.timeout=200 failed"
	fi
	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $MGSNID:/${FSNAME2} $MOUNT2 || error "$MOUNT_CMD failed"
	echo "ok."

	cp /etc/hosts $MOUNT2/ || error "copy /etc/hosts $MOUNT2/ failed"
	$LFS getstripe $MOUNT2/hosts ||
		error "$LFS getstripe $MOUNT2/hosts failed"

	umount $MOUNT2

	if (( "$MGS_VERSION" >= $(version_code 2.15.51) &&
	      "$MDS1_VERSION" >= $(version_code 2.15.51) )); then
		# test lctl del_ost on large index
		do_facet mgs "$LCTL del_ost -t ${FSNAME2}-OST1fff" ||
			error "del_ost failed with $?"
		$MOUNT_CMD $MGSNID:/${FSNAME2} $MOUNT2 ||
			error "$MOUNT_CMD failed"
		echo "ok."
		$LFS df | grep -q OST1fff &&
			error "del_ost did not remove OST1fff!"
		umount $MOUNT2
	fi

	stop fs2ost -f
	stop fs2mds -f
	cleanup_nocli || error "cleanup_nocli failed with $?"
}
run_test 33a "Mount ost with a large index number"

test_33b() {	# was test_34
	setup

	do_facet client dd if=/dev/zero of=$MOUNT/24 bs=1024k count=1
	# Drop lock cancelation reply during umount
	#define OBD_FAIL_LDLM_CANCEL_NET			0x304
	do_facet client $LCTL set_param fail_loc=0x80000304
	#lctl set_param debug=-1
	umount_client $MOUNT
	cleanup || error "cleanup failed with $?"
}
run_test 33b "Drop cancel during umount"

test_33c() {
	(( MDS1_VERSION >= $(version_code 2.15.57) )) ||
		skip "Need MDS version at least 2.15.57"
	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})
	local tstid=${TSTID:-"$(id -u $TSTUSR)"}
	local mkfsoptions
	local qpool="qpool1"

	[ -n "$ost1_HOST" ] && fs2ost_HOST=$ost1_HOST

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)

	if [ "$mds1_FSTYPE" == ldiskfs ]; then
		mkfsoptions="--mkfsoptions=\\\"-J size=8\\\"" # See bug 17931.
	fi

	if combined_mgs_mds; then
		local mgs_flag="--mgs"
	fi

	load_modules
	stack_trap unload_modules_conf

	add fs2mds $(mkfs_opts mds1 ${fs2mdsdev}) --fsname=${FSNAME} \
		--reformat $mgs_flag $mkfsoptions $fs2mdsdev $fs2mdsvdev ||
		exit 10
	add fs2ost $(mkfs_opts ost1 ${fs2ostdev}) --mgsnode=$MGSNID \
		--fsname=${FSNAME} --index=0x7c6 --reformat $fs2ostdev \
		$fs2ostvdev || exit 10


	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS
	stack_trap "stop fs2mds -f"
	start fs2ost $fs2ostdev $OST_MOUNT_OPTS
	stack_trap "stop fs2ost -f"

	mount_client $MOUNT || error "client start failed"
	stack_trap "umount_client $MOUNT"
	mkdir_on_mdt0 $DIR/$tdir || error "cannot create $DIR/$tdir"
	chmod 0777 $DIR/$tdir || error "chown failed"
	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs $PERM_CMD \
			osd-*.$FSNAME-OST*.quota_slave.enable=$QUOTA_TYPE
	else
		do_facet mgs $PERM_CMD $FSNAME.quota.ost=$QUOTA_TYPE ||
			error "set ost quota type failed"
	fi

	local old_MDSCOUNT=$MDSCOUNT
	MDSCOUNT=1
	stack_trap "MDSCOUNT=$old_MDSCOUNT"

	pool_add $qpool || error "pool_add failed"
	pool_add_targets $qpool 0x7c6

	$LFS setquota -u $tstid -B20M -b 0 $MOUNT
	$LFS setquota -g $tstid -B20M -b 0 $MOUNT
	$LFS setquota -u $tstid -B20M -b 0 --pool $qpool $MOUNT
	$LFS setquota -g $tstid -B20M -b 0 --pool $qpool $MOUNT

	for i in {1..10}; do
		runas -u $tstid -g $tstid dd if=/dev/zero of=$DIR/$tdir/f1 \
			bs=1M count=30 oflag=direct
		sleep 3
		rm -f $DIR/$tdir/f1
	done

	destroy_pools
	#umount_client $MOUNT || error "client start failed"
	#stop fs2ost -f
	#stop fs2mds -f
	#cleanup_nocli || error "cleanup_nocli failed with $?"
}
run_test 33c "Mount ost with a large index number"

test_33d() {
	setup
	stack_trap cleanup

	mkdir_on_mdt0 $DIR/$tdir || error "cannot create $DIR/$tdir"
	touch $DIR/$tfile
	$LFS setquota -p 1 -I1K $MOUNT

	do_facet mgs $LCTL set_param osd*.*.quota_slave.enabled=p
	$LFS project -p 1 $DIR/
}
run_test 33d "Don't panic when enable project quota"

test_34a() {
	setup
	do_facet client "bash runmultiop_bg_pause $DIR/file O_c"
	manual_umount_client
	rc=$?
	do_facet client killall -USR1 multiop
	if [ $rc -eq 0 ]; then
		error "umount not fail!"
	fi
	sleep 1
	cleanup || error "cleanup failed with rc $?"
}
run_test 34a "umount with opened file should be fail"

test_34b() {
	setup
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	stop_mds || error "Unable to stop MDS"

	manual_umount_client --force || error "mtab after failed umount with $?"

	cleanup || error "cleanup failed with $?"
}
run_test 34b "force umount with failed mds should be normal"

test_34c() {
	setup
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	stop_ost || error "Unable to stop OST1"

	manual_umount_client --force || error "mtab after failed umount with $?"

	cleanup || error "cleanup failed with $?"
}
run_test 34c "force umount with failed ost should be normal"

test_35a() { # bug 12459
	setup

	DBG_SAVE="`$LCTL get_param -n debug`"
	$LCTL set_param debug="ha"

	log "Set up a fake failnode for the MDS"
	FAKENID="127.0.0.2"
	local device=$(do_facet $SINGLEMDS "$LCTL get_param -n devices" |
		awk '($3 ~ "mdt" && $4 ~ "MDT") { print $4 }' | head -1)

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs "$PERM_CMD \
			      mdc.*${device}*.import=connection=$(h2nettype $FAKENID)" ||
			error "Setting mdc.*${device}*.import=connection=\
			       $(h2nettype $FAKENID) failed."
	else
		do_facet mgs "$PERM_CMD \
			      ${device}.failover.node=$(h2nettype $FAKENID)" ||
			error "Setting ${device}.failover.node=\
			       $(h2nettype $FAKENID) failed."
	fi
	log "Wait for RECONNECT_INTERVAL seconds (10s)"
	sleep 10

	MSG="conf-sanity.sh test_35a `date +%F%kh%Mm%Ss`"
	$LCTL clear
	log "$MSG"
	log "Stopping the MDT: $device"
	stop_mdt 1 || error "MDT0 stop fail"

	df $MOUNT > /dev/null 2>&1 &
	DFPID=$!
	log "Restarting the MDT: $device"
	start_mdt 1 || error "MDT0 start fail"
	log "Wait for df ($DFPID) ... "
	wait $DFPID
	log "done"
	$LCTL set_param debug="$DBG_SAVE"

	# retrieve from the log the first server that the client tried to
	# contact after the connection loss
	$LCTL dk $TMP/lustre-log-$TESTNAME.log
	NEXTCONN=`awk "/${MSG}/ {start = 1;}
		       /import_select_connection.*$device-mdc.* using connection/ {
				if (start) {
					if (\\\$NF ~ /$FAKENID/)
						print \\\$NF;
					else
						print 0;
					exit;
				}
		       }" $TMP/lustre-log-$TESTNAME.log`
	[ "$NEXTCONN" != "0" ] &&
		error "Tried to connect to ${NEXTCONN} not last active server"
	cleanup || error "cleanup failed with $?"
	# remove nid settings
	writeconf_or_reformat
}
run_test 35a "Reconnect to the last active server first"

test_35b() { # bug 18674
	remote_mds || skip "local MDS"
	setup

	debugsave
	$LCTL set_param debug="ha"
	$LCTL clear
	MSG="conf-sanity.sh test_35b `date +%F%kh%Mm%Ss`"
	log "$MSG"

	log "Set up a fake failnode for the MDS"
	FAKENID="127.0.0.2"
	local device=$(do_facet $SINGLEMDS "$LCTL get_param -n devices" |
		awk '($3 ~ "mdt" && $4 ~ "MDT") { print $4 }' | head -1)

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		do_facet mgs "$PERM_CMD \
			      mdc.*${device}*.import=connection=$(h2nettype $FAKENID)" ||
			error "Set mdc.*${device}*.import=connection=\
			       $(h2nettype $FAKENID) failed"
	else
		do_facet mgs "$PERM_CMD \
			      ${device}.failover.node=$(h2nettype $FAKENID)" ||
			error "Set ${device}.failover.node=\
			       $(h2nettype $FAKENID) failed"
	fi

	local at_max_saved=0
	# adaptive timeouts may prevent seeing the issue
	if at_is_enabled; then
		at_max_saved=$(at_max_get mds)
		at_max_set 0 mds client
	fi

	rm -rf $MOUNT/$tdir
	mkdir_on_mdt0 $MOUNT/$tdir || error "mkdir $MOUNT/$tdir failed"

	log "Injecting EBUSY on MDS"
	# Setting OBD_FAIL_MDS_RESEND=0x136
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x80000136" ||
		error "unable to set param fail_loc=0x80000136"

	$LCTL set_param mdc.${FSNAME}*.stats=clear

	log "Creating a test file and stat it"
	touch $MOUNT/$tdir/$tfile || error "touch $MOUNT/$tdir/$tfile failed"
	stat $MOUNT/$tdir/$tfile

	log "Stop injecting EBUSY on MDS"
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0" ||
		error "unable to set param fail_loc=0"
	rm -f $MOUNT/$tdir/$tfile || error "remove $MOUNT/$tdir/$tfile failed"

	log "done"
	# restore adaptive timeout
	[ $at_max_saved -ne 0 ] && at_max_set $at_max_saved mds client

	$LCTL dk $TMP/lustre-log-$TESTNAME.log

	CONNCNT=$($LCTL get_param mdc.${FSNAME}*.stats |
		  awk '/mds_connect/{print $2}')

	# retrieve from the log if the client has ever tried to
	# contact the fake server after the loss of connection
	FAILCONN=`awk "BEGIN {ret = 0;}
		       /import_select_connection.*${FSNAME}-MDT0000-mdc.* using connection/ {
				ret = 1;
				if (\\\$NF ~ /$FAKENID/) {
					ret = 2;
					exit;
				}
		       }
		       END {print ret}" $TMP/lustre-log-$TESTNAME.log`

	[ "$FAILCONN" == "0" ] &&
		error "The client reconnection has not been triggered"
	[ "$FAILCONN" == "2" ] &&
		error "Primary server busy, client reconnect to failover failed"

	# LU-290
	# When OBD_FAIL_MDS_RESEND is hit, we sleep for 2 * obd_timeout
	# Reconnects are supposed to be rate limited to one every 5s
	[ $CONNCNT -gt $((2 * $TIMEOUT / 5 + 1)) ] &&
		error "Too many reconnects $CONNCNT"

	cleanup || error "cleanup failed with $?"
	# remove nid settings
	writeconf_or_reformat
}
run_test 35b "Continue reconnection retries, if the active server is busy"

test_36() { # 12743
	[ $OSTCOUNT -lt 2 ] && skip_env "needs >= 2 OSTs"

	[ "$ost_HOST" = "`hostname`" -o "$ost1_HOST" = "`hostname`" ] ||
		skip "remote OST"

	local rc=0
	local FSNAME2=test1234
	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})

	[ -n "$ost1_HOST" ] && fs2ost_HOST=$ost1_HOST && fs3ost_HOST=$ost1_HOST

	if [ -z "$fs2ost_DEV" -o -z "$fs2mds_DEV" -o -z "$fs3ost_DEV" ]; then
		is_blkdev $SINGLEMDS $MDSDEV &&
			skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs3ostdev=$(ostdevname 2_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)
	local fs3ostvdev=$(ostvdevname 2_2)

	load_modules
	add fs2mds $(mkfs_opts mds1 ${fs2mdsdev}) --mgs --fsname=${FSNAME2} \
		--reformat $fs2mdsdev $fs2mdsvdev || exit 10
	# XXX after we support non 4K disk blocksize in ldiskfs, specify a
	#     different one than the default value here.
	add fs2ost $(mkfs_opts ost1 ${fs2ostdev}) --mgsnode=$MGSNID \
		--fsname=${FSNAME2} --reformat $fs2ostdev $fs2ostvdev || exit 10
	add fs3ost $(mkfs_opts ost2 ${fs3ostdev}) --mgsnode=$MGSNID \
		--fsname=${FSNAME2} --reformat $fs3ostdev $fs3ostvdev || exit 10

	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS
	start fs2ost $fs2ostdev $OST_MOUNT_OPTS
	start fs3ost $fs3ostdev $OST_MOUNT_OPTS
	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $MGSNID:/${FSNAME2} $MOUNT2 || error "$MOUNT_CMD failed"

	sleep 5 # until 11778 fixed

	dd if=/dev/zero of=$MOUNT2/$tfile bs=1M count=7 || error "dd failed"

	BKTOTAL=$($LCTL get_param -n obdfilter.*.kbytestotal |
		  awk 'BEGIN{total=0}; {total+=$1}; END{print total}')
	BKFREE=$($LCTL get_param -n obdfilter.*.kbytesfree |
		 awk 'BEGIN{free=0}; {free+=$1}; END{print free}')
	BKAVAIL=$($LCTL get_param -n obdfilter.*.kbytesavail |
		  awk 'BEGIN{avail=0}; {avail+=$1}; END{print avail}')
	STRING=$(df -P $MOUNT2 | tail -n 1 | awk '{print $2","$3","$4}')
	DFTOTAL=$(echo $STRING | cut -d, -f1)
	DFUSED=$(echo $STRING  | cut -d, -f2)
	DFAVAIL=$(echo $STRING | cut -d, -f3)
	DFFREE=$(($DFTOTAL - $DFUSED))

	ALLOWANCE=$((64 * $OSTCOUNT))

	if [ $DFTOTAL -lt $(($BKTOTAL - $ALLOWANCE)) ] ||
	   [ $DFTOTAL -gt $(($BKTOTAL + $ALLOWANCE)) ] ; then
		echo "**** FAIL: df total($DFTOTAL) mismatch OST total($BKTOTAL)"
		rc=1
	fi
	if [ $DFFREE -lt $(($BKFREE - $ALLOWANCE)) ] ||
	   [ $DFFREE -gt $(($BKFREE + $ALLOWANCE)) ] ; then
		echo "**** FAIL: df free($DFFREE) mismatch OST free($BKFREE)"
		rc=2
	fi
	if [ $DFAVAIL -lt $(($BKAVAIL - $ALLOWANCE)) ] ||
	   [ $DFAVAIL -gt $(($BKAVAIL + $ALLOWANCE)) ] ; then
		echo "**** FAIL: df avail($DFAVAIL) mismatch OST avail($BKAVAIL)"
		rc=3
	fi

	$UMOUNT $MOUNT2
	stop fs3ost -f || error "unable to stop OST3"
	stop fs2ost -f || error "unable to stop OST2"
	stop fs2mds -f || error "unable to stop second MDS"
	unload_modules_conf || error "unable unload modules"
	return $rc
}
run_test 36 "df report consistency on OSTs with different block size"

test_37() {
	local mntpt=$(facet_mntpt $SINGLEMDS)
	local mdsdev=$(mdsdevname ${SINGLEMDS//mds/})
	local mdsdev_sym="$TMP/sym_mdt.img"
	local opts=$MDS_MOUNT_OPTS
	local rc=0

	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	echo "MDS :     $mdsdev"
	echo "SYMLINK : $mdsdev_sym"
	do_facet $SINGLEMDS rm -f $mdsdev_sym

	do_facet $SINGLEMDS ln -s $mdsdev $mdsdev_sym

	echo "mount symlink device - $mdsdev_sym"

	if ! do_facet $SINGLEMDS test -b $mdsdev; then
		opts=$(csa_add "$opts" -o loop)
	fi

	load_modules
	mount_op=$(do_facet $SINGLEMDS mount -v -t lustre $opts \
		$mdsdev_sym $mntpt 2>&1)
	rc=${PIPESTATUS[0]}

	echo mount_op=$mount_op

	do_facet $SINGLEMDS "$UMOUNT $mntpt && rm -f $mdsdev_sym"

	if $(echo $mount_op | grep -q "unable to set tunable"); then
		error "set tunables failed for symlink device"
	fi

	[ $rc -eq 0 ] || error "mount symlink $mdsdev_sym failed! rc=$rc"
}
run_test 37 "verify set tunables works for symlink device"

test_38() { # bug 14222
	local mntpt=$(facet_mntpt $SINGLEMDS)

	setup
	# like runtests
	local COUNT=10
	local SRC="/etc /bin"
	local FILES=$(find $SRC -type f -mtime +1 | head -n $COUNT)

	log "copying $(echo $FILES | wc -w) files to $DIR/$tdir"
	rm -rf $DIR/$tdir
	mkdir_on_mdt0 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	tar cf - $FILES | tar xf - -C $DIR/$tdir ||
		error "copying $SRC to $DIR/$tdir"
	sync
	umount_client $MOUNT || error "umount_client $MOUNT failed"
	do_facet $SINGLEMDS "$LCTL get_param osp.*.prealloc_next_id"
	stop_mds || error "Unable to stop MDS"
	log "delete lov_objid file on MDS"

	mount_fstype $SINGLEMDS || error "mount MDS failed (1)"

	do_facet $SINGLEMDS "od -Ax -td8 $mntpt/lov_objid; rm $mntpt/lov_objid"

	unmount_fstype $SINGLEMDS || error "umount failed (1)"

	# check create in mds_lov_connect
	start_mds || error "unable to start MDS"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	for f in $FILES; do
		[ $V ] && log "verifying $DIR/$tdir/$f"
		diff -q $f $DIR/$tdir/$f || ERROR=y
	done
	do_facet $SINGLEMDS "$LCTL get_param osp.*.prealloc_next_id"
	if [ "$ERROR" = "y" ]; then
		# check it's updates in sync
		umount_client $MOUNT
		stop_mds
		mount_fstype $SIGNLEMDS
		do_facet $SINGLEMDS "od -Ax -td8 $mntpt/lov_objid"
		unmount_fstype $SINGLEMDS
		error "old and new files are different after connect" || true
	fi
	touch $DIR/$tdir/f2 || error "f2 file create failed"

	# check it's updates in sync
	umount_client $MOUNT || error "second umount_client $MOUNT failed"
	stop_mds

	mount_fstype $SINGLEMDS || error "mount MDS failed (3)"

	do_facet $SINGLEMDS "od -Ax -td8 $mntpt/lov_objid"
	do_facet $SINGLEMDS dd if=/dev/zero of=$mntpt/lov_objid.clear count=8

	unmount_fstype $SINGLEMDS || error "umount failed (3)"

	start_mds || error "unable to start MDS"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	for f in $FILES; do
		[ $V ] && log "verifying $DIR/$tdir/$f"
		diff -q $f $DIR/$tdir/$f || ERROR=y
	done
	touch $DIR/$tdir/f3 || error "f3 file create failed"
	do_facet $SINGLEMDS "$LCTL get_param osp.*.prealloc_next_id"
	umount_client $MOUNT || error "third umount_client $MOUNT failed"
	stop_mds
	mount_fstype $SINGLEMDS || error "mount MDS failed (4)"
	do_facet $SINGLEMDS "od -Ax -td8 $mntpt/lov_objid"
	unmount_fstype $SINGLEMDS || error "umount failed (4)"

	[[ "$ERROR" != "y" ]] ||
		error "old and new files are different after sync"

	log "files compared the same"
	cleanup || error "cleanup failed with $?"
}
run_test 38 "MDS recreates missing lov_objid file from OST data"

test_39() {
	[[ -n "$(type -p perl)" ]] || skip_env "need perl for leak_finder.pl"

	PTLDEBUG=+malloc
	setup
	cleanup || error "cleanup failed with $?"
	perl $SRCDIR/leak_finder.pl $TMP/debug 2>&1 | grep -E '*** Leak:' &&
		error "memory leak detected" || true
}
run_test 39 "leak_finder recognizes both LUSTRE and LNET malloc messages"

test_40() { # bug 15759
	start_ost || error "Unable to start OST1"
	#define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x80000706"
	start_mds
	cleanup || error "cleanup failed with rc $?"
}
run_test 40 "race during service thread startup"

test_41a() { #bug 14134
	if [ "$mds1_FSTYPE" == ldiskfs ] &&
	   ! do_facet $SINGLEMDS test -b $(mdsdevname 1); then
		skip "Loop devices does not work with nosvc option"
	fi

	combined_mgs_mds || skip "needs combined MGT and MDT device"

	start_mdt 1 -o nosvc -n
	if [ $MDSCOUNT -ge 2 ]; then
		for num in $(seq 2 $MDSCOUNT); do
			start_mdt $num || return
		done
	fi
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS
	start_mdt 1 -o nomgs,force
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	sleep 5

	echo "blah blah" > $MOUNT/$tfile
	cat $MOUNT/$tfile

	umount_client $MOUNT || error "umount_client $MOUNT failed"
	stop ost1 -f || error "unable to stop OST1"
	stop_mds || error "Unable to stop MDS"
	stop_mds || error "Unable to stop MDS on second try"
}
run_test 41a "mount mds with --nosvc and --nomgs"

test_41b() {
	if [ "$mds1_FSTYPE" == ldiskfs ] &&
	   ! do_facet $SINGLEMDS test -b $(mdsdevname 1); then
		skip "Loop devices does not work with nosvc option"
	fi

	! combined_mgs_mds && skip "needs combined mgs device"

	stopall
	reformat
	local MDSDEV=$(mdsdevname ${SINGLEMDS//mds/})

	start_mdt 1 -o nosvc -n
	if [ $MDSCOUNT -ge 2 ]; then
		for num in $(seq 2 $MDSCOUNT); do
			start_mdt $num || return
		done
	fi
	start_ost || error "Unable to start OST1"
	start_mdt 1 -o nomgs,force
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	sleep 5

	echo "blah blah" > $MOUNT/$tfile
	cat $MOUNT/$tfile || error "cat $MOUNT/$tfile failed"

	umount_client $MOUNT -f || error "umount_client $MOUNT failed"
	stop_ost || error "Unable to stop OST1"
	stop_mds || error "Unable to stop MDS"
	stop_mds || error "Unable to stop MDS on second try"
}
run_test 41b "mount mds with --nosvc and --nomgs on first mount"

test_41c() {
	local osts=$(osts_nodes)

	(( "$MDS1_VERSION" >= $(version_code 2.15.62.4) )) ||
		skip "Need MDS >= 2.15.62.4 for parallel device locking"

	# ensure mds1 ost1 have been created even if running sub-test standalone
	cleanup
	setup
	cleanup || error "cleanup failed"

	# using directly mount command instead of start() function to avoid
	# any side effect of // with others/externals tools/features
	# ("zpool import", ...)

	# MDT concurrent start

	LOAD_MODULES_REMOTE=true load_modules
	do_facet $SINGLEMDS "lsmod | grep -q libcfs" ||
		error "MDT concurrent start: libcfs module not loaded"

	local mds1dev=$(mdsdevname 1)
	local mds1mnt=$(facet_mntpt mds1)
	local mds1opts=$MDS_MOUNT_OPTS

	if [[ "$mds1_FSTYPE" == ldiskfs ]] &&
	   ! do_facet mds1 test -b $mds1dev; then
		mds1opts=$(csa_add "$mds1opts" -o loop)
	fi
	if [[ "$mds1_FSTYPE" == zfs ]]; then
		import_zpool mds1 || return ${PIPESTATUS[0]}
	fi

	#define OBD_FAIL_TGT_MOUNT_RACE 0x716
	do_facet mds1 "$LCTL set_param fail_loc=0x80000716"

	do_facet mds1 mount -t lustre $mds1dev $mds1mnt $mds1opts &
	local pid=$!

	do_facet mds1 mount -t lustre $mds1dev $mds1mnt $mds1opts
	local rc2=$?
	wait $pid
	local rc=$?

	do_facet mds1 "$LCTL set_param fail_loc=0x0"
	if [ $rc -eq 0 ] && [ $rc2 -ne 0 ]; then
		echo "1st MDT start succeed"
		echo "2nd MDT start failed with $rc2"
	elif [ $rc2 -eq 0 ] && [ $rc -ne 0 ]; then
		echo "1st MDT start failed with $rc"
		echo "2nd MDT start succeed"
	else
		stop mds1 -f
		error "unexpected concurrent MDT mounts result, rc=$rc rc2=$rc2"
	fi

	if [ $MDSCOUNT -ge 2 ]; then
		for num in $(seq 2 $MDSCOUNT); do
			start_mdt $num || return
		done
	fi

	# OST concurrent start

	do_rpc_nodes $osts "lsmod | grep -q libcfs" ||
		error "OST concurrent start: libcfs module not loaded"

	local ost1dev=$(ostdevname 1)
	local ost1mnt=$(facet_mntpt ost1)
	local ost1opts=$OST_MOUNT_OPTS

	if [ "$ost1_FSTYPE" == ldiskfs ] &&
	   ! do_facet ost1 test -b $ost1dev; then
		ost1opts=$(csa_add "$ost1opts" -o loop)
	fi
	if [[ "$ost1_FSTYPE" == zfs ]]; then
		import_zpool ost1 || return ${PIPESTATUS[0]}
	fi

	#define OBD_FAIL_TGT_MOUNT_RACE 0x716
	do_facet ost1 "$LCTL set_param fail_loc=0x80000716"

	do_facet ost1 mount -t lustre $ost1dev $ost1mnt $ost1opts &
	pid=$!

	do_facet ost1 mount -t lustre $ost1dev $ost1mnt $ost1opts
	rc2=$?
	wait $pid
	rc=$?
	do_facet ost1 "$LCTL set_param fail_loc=0x0"
	if [ $rc -eq 0 ] && [ $rc2 -ne 0 ]; then
		echo "1st OST start succeed"
		echo "2nd OST start failed with $rc2"
	elif [ $rc2 -eq 0 ] && [ $rc -ne 0 ]; then
		echo "1st OST start failed with $rc"
		echo "2nd OST start succeed"
	else
		stop_mds -f
		stop ost1 -f
		error "unexpected concurrent OST mounts result, rc=$rc rc2=$rc2"
	fi
	# cleanup
	stop_mds
	stop ost1 -f

	# verify everything ok
	start_mds
	if [ $? != 0 ]
	then
		stop_mds
		error "MDT(s) start failed"
	fi

	start_ost
	if [ $? != 0 ]
	then
		stop_mds
		stop ost1 -f
		error "OST(s) start failed"
	fi

	mount_client $MOUNT
	if [ $? != 0 ]
	then
		stop_mds
		stop ost1 -f
		error "client start failed"
	fi
	check_mount
	if [ $? != 0 ]
	then
		stop_mds
		stop ost1 -f
		error "client mount failed"
	fi
	cleanup
}
run_test 41c "concurrent mounts of MDT/OST should all fail but one"

test_42() { #bug 14693
	local PARAM

	setup
	check_mount || error "client was not mounted"

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		PARAM="llite.$FSNAME-*.some_wrong_param"
	else
		PARAM="$FSNAME.llite.some_wrong_param"
	fi

	do_facet mgs $PERM_CMD $PARAM=10
	umount_client $MOUNT ||
		error "unmounting client failed with invalid llite param"
	mount_client $MOUNT ||
		error "mounting client failed with invalid llite param"

	do_facet mgs $PERM_CMD $PARAM=20
	cleanup || error "stopping $FSNAME failed with invalid sys param"
	setup
	check_mount || error "client was not mounted with invalid sys param"
	cleanup || error "stopping $FSNAME failed with invalid sys param"
}
run_test 42 "allow client/server mount/unmount with invalid config param"

test_43a_check_nosquash_nids() {
	local nidlist="$1"

	set_persistent_param_and_check mds1                             \
		"mdt.$FSNAME-MDT0000.nosquash_nids"                     \
		"$FSNAME-MDTall.mdt.nosquash_nids"                      \
		"$nidlist"
	wait_update $HOSTNAME                                           \
		"$LCTL get_param -n llite.${FSNAME}*.nosquash_nids"     \
		"$nidlist" ||
		error "check llite nosquash_nids failed!"

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tfile-rootfile)
	dd if=$DIR/$tfile-rootfile 1>/dev/null 2>/dev/null ||
		error "$ST: root read permission is denied"
	echo "$ST: root read permission is granted - ok"

	echo "666" |
	dd conv=notrunc of=$DIR/$tfile-rootfile 1>/dev/null 2>/dev/null ||
		error "$ST: root write permission is denied"
	echo "$ST: root write permission is granted - ok"

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tdir-rootdir)
	rm $DIR/$tdir-rootdir/tfile-1 ||
		error "$ST: root unlink permission is denied"
	echo "$ST: root unlink permission is granted - ok"
	touch $DIR/$tdir-rootdir/tfile-2 ||
		error "$ST: root create permission is denied"
	echo "$ST: root create permission is granted - ok"

	# Re-create test file deleted above in case this function is called
	# again
	touch $DIR/$tdir-rootdir/tfile-1 || error "touch failed"
}

test_43a() {
	[[ "$MGS_VERSION" -ge $(version_code 2.5.58) ]] ||
		skip "Need MDS version at least 2.5.58"
	[ $UID -ne 0 -o $RUNAS_ID -eq 0 ] && skip_env "run as root"

	ID1=${ID1:-501}
	USER1=$(getent passwd | grep :$ID1:$ID1: | cut -d: -f1)
	[ -z "$USER1" ] && skip_env "missing user with uid=$ID1 gid=$ID1"

	setup
	chmod ugo+x $DIR || error "chmod 0 failed"
	set_persistent_param_and_check mds1				\
		"mdt.$FSNAME-MDT0000.root_squash"			\
		"$FSNAME.mdt.root_squash"				\
		"0:0"
	wait_update $HOSTNAME						\
		"$LCTL get_param -n llite.${FSNAME}*.root_squash"	\
		"0:0" ||
		error "check llite root_squash failed!"
	set_persistent_param_and_check mds1				\
		"mdt.$FSNAME-MDT0000.nosquash_nids"			\
		"$FSNAME.mdt.nosquash_nids"				\
		"NONE"
	wait_update $HOSTNAME						\
		"$LCTL get_param -n llite.${FSNAME}*.nosquash_nids"	\
		"NONE" ||
		error "check llite nosquash_nids failed!"

	#
	# create set of test files
	#
	echo "111" > $DIR/$tfile-userfile || error "write 1 failed"
	chmod go-rw $DIR/$tfile-userfile  || error "chmod 1 failed"
	chown $RUNAS_ID.$RUNAS_ID $DIR/$tfile-userfile || error "chown failed"

	echo "222" > $DIR/$tfile-rootfile || error "write 2 failed"
	chmod go-rw $DIR/$tfile-rootfile  || error "chmod 2 faield"

	mkdir_on_mdt0 $DIR/$tdir-rootdir || error "mkdir failed"
	chmod go-rwx $DIR/$tdir-rootdir || error "chmod 3 failed"
	touch $DIR/$tdir-rootdir/tfile-1 || error "touch failed"

	echo "777" > $DIR/$tfile-user1file || error "write 7 failed"
	chmod go-rw $DIR/$tfile-user1file || error "chmod 7 failed"
	chown $ID1.$ID1 $DIR/$tfile-user1file || error "chown failed"

	#
	# check root_squash:
	#   set root squash UID:GID to RUNAS_ID
	#   root should be able to access only files owned by RUNAS_ID
	#
	set_persistent_param_and_check mds1				\
		"mdt.$FSNAME-MDT0000.root_squash"			\
		"$FSNAME.mdt.root_squash"				\
		"$RUNAS_ID:$RUNAS_ID"
	wait_update $HOSTNAME						\
		"$LCTL get_param -n llite.${FSNAME}*.root_squash"	\
		"$RUNAS_ID:$RUNAS_ID" ||
		error "check llite root_squash failed!"

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tfile-userfile)
	dd if=$DIR/$tfile-userfile 1>/dev/null 2>/dev/null ||
		error "$ST: root read permission is denied"
	echo "$ST: root read permission is granted - ok"

	echo "444" |
	dd conv=notrunc of=$DIR/$tfile-userfile 1>/dev/null 2>/dev/null ||
		error "$ST: root write permission is denied"
	echo "$ST: root write permission is granted - ok"

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tfile-rootfile)
	dd if=$DIR/$tfile-rootfile 1>/dev/null 2>/dev/null &&
		error "$ST: root read permission is granted"
	echo "$ST: root read permission is denied - ok"

	echo "555" |
	dd conv=notrunc of=$DIR/$tfile-rootfile 1>/dev/null 2>/dev/null &&
		error "$ST: root write permission is granted"
	echo "$ST: root write permission is denied - ok"

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tdir-rootdir)
		rm $DIR/$tdir-rootdir/tfile-1 1>/dev/null 2>/dev/null &&
			error "$ST: root unlink permission is granted"
	echo "$ST: root unlink permission is denied - ok"

	touch $DIR/tdir-rootdir/tfile-2 1>/dev/null 2>/dev/null &&
		error "$ST: root create permission is granted"
	echo "$ST: root create permission is denied - ok"

	# LU-1778
	# check root_squash is enforced independently
	# of client cache content
	#
	# access file by USER1, keep access open
	# root should be denied access to user file

	runas -u $ID1 tail -f $DIR/$tfile-user1file 1>/dev/null 2>&1 &
	pid=$!
	sleep 1

	ST=$(stat -c "%n: owner uid %u (%A)" $DIR/$tfile-user1file)
	dd if=$DIR/$tfile-user1file 1>/dev/null 2>&1 &&
	    { kill $pid; error "$ST: root read permission is granted"; }
	echo "$ST: root read permission is denied - ok"

	echo "777" |
	dd conv=notrunc of=$DIR/$tfile-user1file 1>/dev/null 2>&1 &&
	    { kill $pid; error "$ST: root write permission is granted"; }
	echo "$ST: root write permission is denied - ok"

	kill $pid
	wait $pid

	#
	# check nosquash_nids:
	#   put client's NID into nosquash_nids list,
	#   root should be able to access root file after that
	#
	local nidlist=$($LCTL list_nids all | tr '\n' ' ')
	nidlist="2@gni $nidlist 192.168.0.[2,10]@tcp"
	nidlist=$(echo $nidlist | tr -s ' ' ' ')

	test_43a_check_nosquash_nids "$nidlist"

	if (( $MDS1_VERSION < $(version_code v2_16_50-4-g4b12a9dcaf) )); then
		log "Need server version at least v2_16_50-4-g4b12a9dcaf"
		cleanup || error "cleanup failed with $?"
		return 0
	fi

	if ! [[ $NETTYPE =~ ^(tcp|o2ib) ]]; then
		log "Skip nidmask test for NETTYPE = $NETTYPE"
		cleanup || error "cleanup failed with $?"
		return 0
	fi

	# check nosquash_nids:
	#   create a nidmask that contains the client's NID and place it
	#   into nosquash_nids list.
	#   root should be able to access root file after that
	local interfaces=( $(lnet_if_list) )
	local intf netmasks nm

	for intf in ${interfaces[@]}; do
		nm=$(ip -o -4 a s ${intf} | awk '{print $4}')
		[[ -n $nm ]] && netmasks+=" $nm@${NETTYPE}"
		nm=$(ip -o -6 a s ${intf} | grep -v 'fe80::' | awk '{print $4}')
		[[ -n $nm ]] && netmasks+=" $nm@${NETTYPE}"
	done

	netmasks="${netmasks/ }"

	if [[ -z $netmasks ]]; then
		error "Unable to determine netmasks for ${interfaces[@]}"
	fi

	test_43a_check_nosquash_nids "$netmasks"

	# cleanup test dir/files
	rm -rf $DIR/$tfile-* $DIR/$tdir-rootdir ||
		error "Failed to remove test files/dir rc = $?"

	cleanup || error "cleanup failed with $?"
}
run_test 43a "check root_squash and nosquash_nids"

test_43b() { # LU-5690
	[[ "$MGS_VERSION" -ge $(version_code 2.7.62) ]] ||
		skip "Need MGS version 2.7.62+"

	if [[ -z "$fs2mds_DEV" ]]; then
		is_blkdev $SINGLEMDS $(mdsdevname ${SINGLEMDS//mds/}) &&
		skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)

	# temporarily use fs2mds as fs2mgs
	local fs2mgs=fs2mds
	local fs2mgsdev=$fs2mdsdev
	local fs2mgsvdev=$fs2mdsvdev

	local fsname=test1234

	load_modules
	local client_ip=$(host_nids_address $HOSTNAME $NETTYPE)
	local host=${client_ip//*./}
	local net=${client_ip/%$host/}
	local nosquash_nids=$(h2nettype $net[$host,$host,$host])

	add $fs2mgs $(mkfs_opts mgs $fs2mgsdev) --fsname=$fsname \
		--param mdt.root_squash=$RUNAS_ID:$RUNAS_ID \
		--param mdt.nosquash_nids=$nosquash_nids \
		--reformat $fs2mgsdev $fs2mgsvdev || error "add fs2mgs failed"
	start $fs2mgs $fs2mgsdev $MGS_MOUNT_OPTS  || error "start fs2mgs failed"
	stop $fs2mgs -f || error "stop fs2mgs failed"
	cleanup || error "cleanup failed with $?"
}
run_test 43b "parse nosquash_nids with commas in expr_list"

test_44() { # 16317
	setup
	check_mount || error "check_mount"
	UUID=$($LCTL get_param llite.${FSNAME}*.uuid | cut -d= -f2)
	STATS_FOUND=no
	UUIDS=$(do_facet $SINGLEMDS "$LCTL get_param mdt.${FSNAME}*.exports.*.uuid")
	for VAL in $UUIDS; do
		NID=$(echo $VAL | cut -d= -f1)
		CLUUID=$(echo $VAL | cut -d= -f2)
		[ "$UUID" = "$CLUUID" ] && STATS_FOUND=yes && break
	done
	[ "$STATS_FOUND" = "no" ] && error "stats not found for client"
	cleanup || error "cleanup failed with $?"
}
run_test 44 "mounted client proc entry exists"

test_45() { #17310
	setup
	check_mount || error "check_mount"
	stop_mds || error "Unable to stop MDS"
	df -h $MOUNT &
	log "sleep 60 sec"
	sleep 60
	#define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK	0x50f
	do_facet client "$LCTL set_param fail_loc=0x8000050f"
	log "sleep 10 sec"
	sleep 10
	manual_umount_client --force || error "manual_umount_client failed"
	do_facet client "$LCTL set_param fail_loc=0x0"
	start_mds || error "unable to start MDS"
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	cleanup || error "cleanup failed with $?"
}
run_test 45 "long unlink handling in ptlrpcd"

cleanup_46a() {
	trap 0
	local rc=0
	local count=$1

	umount_client $MOUNT2 || rc=$?
	umount_client $MOUNT || rc=$?
	while [ $count -gt 0 ]; do
		stop ost${count} -f || rc=$?
		let count=count-1
	done
	stop_mds || rc=$?
	cleanup_nocli || rc=$?
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
	return $rc
}

test_46a() {
	echo "Testing with $OSTCOUNT OSTs"
	reformat_and_config
	start_mds || error "unable to start MDS"
	#first client should see only one ost
	start_ost || error "Unable to start OST1"
	wait_osc_import_state mds ost FULL
	#start_client
	mount_client $MOUNT || error "mount_client $MOUNT failed"
	trap "cleanup_46a $OSTCOUNT" EXIT ERR

	local i
	for (( i=2; i<=$OSTCOUNT; i++ )); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS ||
			error "start_ost$i $(ostdevname $i) failed"
	done

	# wait until osts in sync
	for (( i=2; i<=$OSTCOUNT; i++ )); do
	    wait_osc_import_state mds ost$i FULL
	    wait_osc_import_ready client ost$i
	done

	#second client see all ost's

	mount_client $MOUNT2 || error "mount_client failed"
	$LFS setstripe -c -1 $MOUNT2 ||
		error "$LFS setstripe -c -1 $MOUNT2 failed"
	$LFS getstripe $MOUNT2 || error "$LFS getstripe $MOUNT2 failed"

	echo "ok" > $MOUNT2/widestripe
	$LFS getstripe $MOUNT2/widestripe ||
		error "$LFS getstripe $MOUNT2/widestripe failed"
	# fill acl buffer for avoid expand lsm to them
	awk -F : '{if (FNR < 25) { print "u:"$1":rwx" }}' /etc/passwd |
		while read acl; do
	    setfacl -m $acl $MOUNT2/widestripe
	done

	# will be deadlock
	stat $MOUNT/widestripe || error "stat $MOUNT/widestripe failed"

	cleanup_46a $OSTCOUNT || error "cleanup_46a failed"
}
run_test 46a "handle ost additional - wide striped file"

test_47a() { #17674
	reformat
	setup_noconfig
	check_mount || error "check_mount failed"
	$LCTL set_param ldlm.namespaces.$FSNAME-*-*-*.lru_size=100

	local lru_size=[]
	local count=0
	for ns in $($LCTL get_param ldlm.namespaces.$FSNAME-*-*-*.lru_size); do
		if echo $ns | grep "MDT[[:digit:]]*"; then
			continue
		fi
		lrs=$(echo $ns | sed 's/.*lru_size=//')
		lru_size[count]=$lrs
		let count=count+1
	done

	facet_failover ost1
	facet_failover $SINGLEMDS
	client_up || error "client_up failed"

	count=0
	for ns in $($LCTL get_param ldlm.namespaces.$FSNAME-*-*-*.lru_size); do
		if echo $ns | grep "MDT[[:digit:]]*"; then
			continue
		fi
		lrs=$(echo $ns | sed 's/.*lru_size=//')
		if ! test "$lrs" -eq "${lru_size[count]}"; then
			n=$(echo $ns | sed -e 's/ldlm.namespaces.//' -e 's/.lru_size=.*//')
			error "$n has lost lru_size: $lrs vs. ${lru_size[count]}"
		fi
		let count=count+1
	done
	cleanup || error "cleanup failed with $?"
}
run_test 47a "server restart does not lose lru_resize"

test_47b() { #17833
	local create_simple_link=false

	reformat
	setup_noconfig
	check_mount || error "check_mount failed"

	[[ -e /usr/sbin/lctl ]] || {
		# Unfortunately set_param -P rely on the hardcoded path
		# /usr/sbin/lctl
		ln -s /usr/sbin/lctl $LCTL ||
			skip_env "Can not create symlink /usr/sbin/lctl"
		stack_trap "rm -f /usr/sbin/lctl"
	}

	do_facet mgs $LCTL \
		set_param -P ldlm.namespaces.$FSNAME-*-mdc-*.lru_size=200
	wait_update $HOSTNAME \
	  "$LCTL get_param -n ldlm.namespaces.$FSNAME-MDT0000-mdc-*.lru_size" \
	  "200"
	umount $MOUNT || error "Unable to umount client"
	mount_client $MOUNT || error "mount failed"
	for ns in $($LCTL get_param ldlm.namespaces.$FSNAME*mdc*.lru_size); do
		(( ${ns/*=/} == 200)) ||
			error "${ns/=*/} is ${ns/*=/}, expect 200"
	done
	cleanup || error "cleanup failed with $?"
}
run_test 47b "client restart does not lose lru_resize"

cleanup_48() {
	trap 0

	# reformat after this test is needed - if the test fails,
	# we will have unkillable file at FS
	reformat_and_config
}

test_48() { # bz-17636 LU-7473
	local count

	setup_noconfig
	check_mount || error "check_mount failed"

	debugsave
	stack_trap "debugrestore"
	$LCTL set_param debug=0
	do_facet $SINGLEMDS $LCTL set_param debug=0

	$LFS setstripe -c -1 $MOUNT ||
		error "$LFS setstripe -c -1 $MOUNT failed"
	$LFS getstripe $MOUNT || error "$LFS getstripe $MOUNT failed"

	echo "ok" > $MOUNT/widestripe
	$LFS getstripe $MOUNT/widestripe ||
		error "$LFS getstripe $MOUNT/widestripe failed"

	# In the future, we may introduce more EAs, such as selinux, enlarged
	# LOV EA, and so on. These EA will use some EA space that is shared by
	# ACL entries. So here we only check some reasonable ACL entries count,
	# instead of the max number that is calculated from the max_ea_size.
	if (( $MDS1_VERSION < $(version_code 2.8.57) )); then
		count=28	# hard coded of RPC protocol
	elif large_xattr_enabled; then
		count=4500	# max_num 8187 max_ea_size = 65452
				# not create too many (4500) to save test time
	else
		count=450	# max_num 497 max_ea_size = 4012
	fi

	echo "It is expected to hold at least $count ACL entries"
	trap cleanup_48 EXIT ERR
	for ((i = 0; i < $count; i++)) do
		setfacl -m u:$((i + 100)):rw $MOUNT/widestripe ||
			error "Fail to setfacl for $MOUNT/widestripe at $i"
	done

	cancel_lru_locks mdc
	stat $MOUNT/widestripe || error "stat $MOUNT/widestripe failed"
	local r_count=$(getfacl $MOUNT/widestripe | grep "user:" | wc -l)

	count=$((count + 1)) # for the entry "user::rw-"

	(( $count == $r_count )) ||
		error "Expected ACL entries $count, but got $r_count"

	cleanup_48
}
run_test 48 "too many acls on file"

# check PARAM_SYS_LDLM_TIMEOUT option of MKFS.LUSTRE
test_49a() { # bug 17710
	local timeout_orig=$TIMEOUT
	local ldlm_timeout_orig=$LDLM_TIMEOUT
	local LOCAL_TIMEOUT=20

	LDLM_TIMEOUT=$LOCAL_TIMEOUT
	TIMEOUT=$LOCAL_TIMEOUT

	reformat
	setup_noconfig
	check_mount || error "client mount failed"

	echo "check ldlm_timout..."
	local LDLM_MDS="$(do_facet $SINGLEMDS $LCTL get_param -n ldlm_timeout)"
	local LDLM_OST1="$(do_facet ost1 $LCTL get_param -n ldlm_timeout)"
	local LDLM_CLIENT="$(do_facet client $LCTL get_param -n ldlm_timeout)"

	if [ $LDLM_MDS -ne $LDLM_OST1 -o $LDLM_MDS -ne $LDLM_CLIENT ]; then
		error "Different LDLM_TIMEOUT:$LDLM_MDS $LDLM_OST1 $LDLM_CLIENT"
	fi

	if [ $LDLM_MDS -ne $((LOCAL_TIMEOUT / 3)) ]; then
		error "LDLM_TIMEOUT($LDLM_MDS) is not $((LOCAL_TIMEOUT / 3))"
	fi

	umount_client $MOUNT || error "umount_client $MOUNT failed"
	stop_ost || error "problem stopping OSS"
	stop_mds || error "problem stopping MDS"

	LDLM_TIMEOUT=$ldlm_timeout_orig
	TIMEOUT=$timeout_orig
}
run_test 49a "check PARAM_SYS_LDLM_TIMEOUT option of mkfs.lustre"

test_49b() { # bug 17710
	local timeout_orig=$TIMEOUT
	local ldlm_timeout_orig=$LDLM_TIMEOUT
	local LOCAL_TIMEOUT=20

	LDLM_TIMEOUT=$((LOCAL_TIMEOUT - 1))
	TIMEOUT=$LOCAL_TIMEOUT

	reformat
	setup_noconfig
	check_mount || error "client mount failed"

	local LDLM_MDS="$(do_facet $SINGLEMDS $LCTL get_param -n ldlm_timeout)"
	local LDLM_OST1="$(do_facet ost1 $LCTL get_param -n ldlm_timeout)"
	local LDLM_CLIENT="$(do_facet client $LCTL get_param -n ldlm_timeout)"

	if [ $LDLM_MDS -ne $LDLM_OST1 -o $LDLM_MDS -ne $LDLM_CLIENT ]; then
		error "Different LDLM_TIMEOUT:$LDLM_MDS $LDLM_OST1 $LDLM_CLIENT"
	fi

	if [ $LDLM_MDS -ne $((LOCAL_TIMEOUT - 1)) ]; then
		error "LDLM_TIMEOUT($LDLM_MDS) is not $((LOCAL_TIMEOUT - 1))"
	fi

	cleanup || error "cleanup failed"

	LDLM_TIMEOUT=$ldlm_timeout_orig
	TIMEOUT=$timeout_orig
}
run_test 49b "check PARAM_SYS_LDLM_TIMEOUT option of mkfs.lustre"

lazystatfs() {
	# wait long enough to exceed OBD_STATFS_CACHE_SECONDS = 1
	sleep 2
	# Test both statfs and lfs df and fail if either one fails
	multiop_bg_pause $1 f_
	RC=$?
	PID=$!
	killall -USR1 multiop
	[ $RC -ne 0 ] && log "lazystatfs multiop failed"
	wait $PID || { RC=$?; log "multiop return error "; }

	# wait long enough to exceed OBD_STATFS_CACHE_SECONDS = 1
	sleep 2
	$LFS df -l &
	PID=$!
	sleep 5
	if kill -s 0 $PID; then
		RC=1
		kill -s 9 $PID
		log "lazystatfs lfs df failed to complete in 5s"
	fi

	return $RC
}

test_50a() {
	setup
	$LCTL set_param llite.$FSNAME-*.lazystatfs=1
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"

	lazystatfs $MOUNT || error "lazystatfs failed but no down servers"

	cleanup || error "cleanup failed with rc $?"
}
run_test 50a "lazystatfs all servers available"

test_50b() {
	setup
	$LCTL set_param llite.$FSNAME-*.lazystatfs=1
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"

	# Wait for client to detect down OST
	stop_ost || error "Unable to stop OST1"
	wait_osc_import_state client ost DISCONN
	$LCTL dl
	log "OSCs should all be DISCONN"

	lazystatfs $MOUNT || error "lazystatfs should not return EIO"

	umount_client $MOUNT || error "Unable to unmount client"
	stop_mds || error "Unable to stop MDS"
}
run_test 50b "lazystatfs all servers down"

test_50c() {
	start_mds || error "Unable to start MDS"
	start_ost || error "Unable to start OST1"
	start_ost2 || error "Unable to start OST2"
	mount_client $MOUNT || error "Unable to mount client"
	$LCTL set_param llite.$FSNAME-*.lazystatfs=1
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"

	# Wait for client to detect down OST
	stop_ost || error "Unable to stop OST1"
	wait_osc_import_state mds ost DISCONN
	lazystatfs $MOUNT || error "lazystatfs failed with one down server"

	umount_client $MOUNT || error "Unable to unmount client"
	stop_ost2 || error "Unable to stop OST2"
	stop_mds || error "Unable to stop MDS"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 50c "lazystatfs one server down"

test_50d() {
	start_mds || error "Unable to start MDS"
	start_ost || error "Unable to start OST1"
	start_ost2 || error "Unable to start OST2"
	mount_client $MOUNT || error "Unable to mount client"
	$LCTL set_param llite.$FSNAME-*.lazystatfs=1
	touch $DIR/$tfile || error "touch $DIR/$tfile failed"

	# Issue the statfs during the window where the client still
	# belives the OST to be available but it is in fact down.
	# No failure just a statfs which hangs for a timeout interval.
	stop_ost || error "Unable to stop OST1"
	lazystatfs $MOUNT || error "lazystatfs failed with one down server"

	umount_client $MOUNT || error "Unable to unmount client"
	stop_ost2 || error "Unable to stop OST2"
	stop_mds || error "Unable to stop MDS"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 50d "lazystatfs client/server conn race"

test_50e() {
	local RC1
	local pid

	reformat_and_config
	start_mds || error "Unable to start MDS"
	#first client should see only one ost
	start_ost || error "Unable to start OST1"
	wait_osc_import_state mds ost FULL

	# Wait for client to detect down OST
	stop_ost || error "Unable to stop OST1"
	wait_osc_import_state mds ost DISCONN

	mount_client $MOUNT || error "Unable to mount client"
	$LCTL set_param llite.$FSNAME-*.lazystatfs=0

	multiop_bg_pause $MOUNT _f
	RC1=$?
	pid=$!

	if [ $RC1 -ne 0 ]; then
		log "multiop failed $RC1"
	else
	    kill -USR1 $pid
	    sleep $(( $TIMEOUT+1 ))
	    kill -0 $pid
	    [ $? -ne 0 ] && error "process isn't sleep"
	    start_ost || error "Unable to start OST1"
	    wait $pid || error "statfs failed"
	fi

	umount_client $MOUNT || error "Unable to unmount client"
	stop_ost || error "Unable to stop OST1"
	stop_mds || error "Unable to stop MDS"
}
run_test 50e "normal statfs all servers down"

test_50f() {
	local RC1
	local pid
	CONN_PROC="osc.$FSNAME-OST0001-osc-[M]*.ost_server_uuid"

	start_mds || error "Unable to start mds"
	#first client should see only one ost
	start_ost || error "Unable to start OST1"
	wait_osc_import_state mds ost FULL

	start_ost2 || error "Unable to start OST2"
	wait_osc_import_state mds ost2 FULL

	# Wait for client to detect down OST
	stop_ost2 || error "Unable to stop OST2"

	wait_osc_import_state mds ost2 DISCONN
	mount_client $MOUNT || error "Unable to mount client"
	$LCTL set_param llite.$FSNAME-*.lazystatfs=0

	multiop_bg_pause $MOUNT _f
	RC1=$?
	pid=$!

	if [ $RC1 -ne 0 ]; then
		log "lazystatfs multiop failed $RC1"
	else
	    kill -USR1 $pid
	    sleep $(( $TIMEOUT+1 ))
	    kill -0 $pid
	    [ $? -ne 0 ] && error "process isn't sleep"
	    start_ost2 || error "Unable to start OST2"
	    wait $pid || error "statfs failed"
	    stop_ost2 || error "Unable to stop OST2"
	fi

	umount_client $MOUNT -f || error "Unable to unmount client"
	stop_ost || error "Unable to stop OST1"
	stop_mds || error "Unable to stop MDS"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 50f "normal statfs one server in down"

test_50g() {
	[ "$OSTCOUNT" -lt "2" ] && skip_env "needs >=2 OSTs"
	setup
	start_ost2 || error "Unable to start OST2"
	wait_osc_import_state mds ost2 FULL
	wait_osc_import_ready client ost2

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		local PARAM="osc.${FSNAME}-OST0001*.active"
	else
		local PARAM="${FSNAME}-OST0001.osc.active"
	fi

	$LFS setstripe -c -1 $DIR/$tfile || error "$LFS setstripe failed"
	do_facet mgs $PERM_CMD $PARAM=0 || error "Unable to deactivate OST"

	umount_client $MOUNT || error "Unable to unmount client"
	mount_client $MOUNT || error "Unable to mount client"
	# This df should not cause a panic
	df -k $MOUNT

	do_facet mgs $PERM_CMD $PARAM=1 || error "Unable to activate OST"
	rm -f $DIR/$tfile || error "unable to remove file $DIR/$tfile"
	umount_client $MOUNT || error "Unable to unmount client"
	stop_ost2 || error "Unable to stop OST2"
	stop_ost || error "Unable to stop OST1"
	stop_mds || error "Unable to stop MDS"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 50g "deactivated OST should not cause panic"

# LU-642
test_50h() {
	# prepare MDT/OST, make OSC inactive for OST1
	[ "$OSTCOUNT" -lt "2" ] && skip_env "needs >=2 OSTs"

	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	do_facet ost1 "$TUNEFS --param osc.active=0 `ostdevname 1`" ||
		error "tunefs OST1 failed"
	start_mds  || error "Unable to start MDT"
	start_ost  || error "Unable to start OST1"
	start_ost2 || error "Unable to start OST2"
	mount_client $MOUNT || error "client start failed"

	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"

	# activatate OSC for OST1
	set_persistent_param_and_check client		 \
		"osc.${FSNAME}-OST0000-osc-[!M]*.active" \
		"${FSNAME}-OST0000.osc.active" 1

	mkdir $DIR/$tdir/2 || error "mkdir $DIR/$tdir/2 failed"
	$LFS setstripe -c -1 -i 0 $DIR/$tdir/2 ||
		error "$LFS setstripe $DIR/$tdir/2 failed"
	sleep 1 && echo "create a file after OST1 is activated"
	# doing some io, shouldn't crash
	dd if=/dev/zero of=$DIR/$tdir/2/$tfile-io bs=1M count=10

	# check OSC import is working
	stat $DIR/$tdir/2/* >/dev/null 2>&1 ||
		error "some OSC imports are still not connected"

	# cleanup
	rm -rf $DIR/$tdir
	umount_client $MOUNT || error "Unable to umount client"
	stop_ost2 || error "Unable to stop OST2"
	cleanup_nocli || error "cleanup_nocli failed with $?"
}
run_test 50h "LU-642: activate deactivated OST"

test_50i() {
	# prepare MDT/OST, make OSC inactive for OST1
	[ "$MDSCOUNT" -lt "2" ] && skip "needs >= 2 MDTs"

	load_modules
	[ $(facet_fstype mds2) == zfs ] && import_zpool mds2
	do_facet mds2 "$TUNEFS --param mdc.active=0 $(mdsdevname 2)" ||
		error "tunefs MDT2 failed"
	start_mds  || error "Unable to start MDT"
	start_ost  || error "Unable to start OST1"
	start_ost2 || error "Unable to start OST2"
	mount_client $MOUNT || error "client start failed"

	mkdir_on_mdt0 $DIR/$tdir || error "mkdir $DIR/$tdir failed"

	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		$PERM_CMD mdc.${FSNAME}-MDT0001-mdc-*.active=0 &&
			error "deactive MDC0 succeeds"
	else
		$PERM_CMD ${FSNAME}-MDT0000.mdc.active=0 &&
			error "deactive MDC0 succeeds"
	fi

	# activate MDC for MDT2
	set_persistent_param_and_check client		 \
		"mdc.${FSNAME}-MDT0001-mdc-*.active" \
		"${FSNAME}-MDT0001.mdc.active" 1

	wait_clients_import_state ${CLIENTS:-$HOSTNAME} mds2 FULL
	if [ "$MDS1_VERSION" -ge $(version_code 2.7.60) ]
	then
		wait_dne_interconnect
	fi
	$LFS mkdir -i1 $DIR/$tdir/2 || error "mkdir $DIR/$tdir/2 failed"
	# create some file
	createmany -o $DIR/$tdir/2/$tfile-%d 1 || error "create files failed"

	rm -rf $DIR/$tdir/2 || error "unlink dir failed"

	# deactivate MDC for MDT2
	set_persistent_param_and_check client		\
		"mdc.${FSNAME}-MDT0001-mdc-*.active"	\
		"${FSNAME}-MDT0001.mdc.active" 0

	wait_osp_active mds ${FSNAME}-MDT0001 1 0

	$LFS mkdir -i1 $DIR/$tdir/2 &&
		error "mkdir $DIR/$tdir/2 succeeds after deactive MDT"

	$LFS mkdir -i0 -c$MDSCOUNT $DIR/$tdir/striped_dir ||
		error "mkdir $DIR/$tdir/striped_dir fails after deactive MDT2"

	local stripe_count=$($LFS getdirstripe -c $DIR/$tdir/striped_dir)
	[ $stripe_count -eq $((MDSCOUNT - 1)) ] ||
		error "wrong $stripe_count != $((MDSCOUNT -1)) for striped_dir"

	# cleanup
	umount_client $MOUNT || error "Unable to umount client"
	stop_mds
	stop_ost
	stop_ost 2
}
run_test 50i "activate deactivated MDT"

test_51() {
	local LOCAL_TIMEOUT=20

	reformat
	setup_noconfig
	check_mount || error "check_mount failed"

	mkdir_on_mdt0 $MOUNT/$tdir || error "mkdir $MOUNT/$tdir failed"
	$LFS setstripe -c -1 $MOUNT/$tdir ||
		error "$LFS setstripe -c -1 $MOUNT/$tdir failed"
	#define OBD_FAIL_MDS_REINT_DELAY         0x142
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0x142"
	touch $MOUNT/$tdir/$tfile &
	local pid=$!
	sleep 2
	start_ost2 || error "Unable to start OST1"
	wait $pid
	stop_ost2 || error "Unable to stop OST1"
	umount_client $MOUNT -f || error "unmount $MOUNT failed"
	cleanup_nocli || error "stop server failed"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 51 "Verify that mdt_reint handles RMF_MDT_MD correctly when an OST is added"

copy_files_xattrs()
{
	local node=$1
	local dest=$2
	local xattrs=$3
	shift 3

	do_node $node mkdir -p $dest
	[ $? -eq 0 ] || { error "Unable to create directory"; return 1; }

	do_node $node  'tar cf - '$*' | tar xf - -C '$dest';
			[ \"\${PIPESTATUS[*]}\" = \"0 0\" ] || exit 1'
	[ $? -eq 0 ] || { error "Unable to tar files"; return 2; }

	do_node $node 'getfattr -d -m "[a-z]*\\." '$*' > '$xattrs
	[ $? -eq 0 ] || { error "Unable to read xattrs"; return 3; }
}

diff_files_xattrs()
{
	local node=$1
	local backup=$2
	local xattrs=$3
	shift 3

	local backup2=${TMP}/backup2

	do_node $node mkdir -p $backup2
	[ $? -eq 0 ] || { error "Unable to create directory"; return 1; }

	do_node $node  'tar cf - '$*' | tar xf - -C '$backup2';
			[ \"\${PIPESTATUS[*]}\" = \"0 0\" ] || exit 1'
	[ $? -eq 0 ] || { error "Unable to tar files to diff"; return 2; }

	do_node $node "diff -rq $backup $backup2"
	[ $? -eq 0 ] || { error "contents differ"; return 3; }

	local xattrs2=${TMP}/xattrs2
	do_node $node 'getfattr -d -m "[a-z]*\\." '$*' > '$xattrs2
	[ $? -eq 0 ] || { error "Unable to read xattrs to diff"; return 4; }

	do_node $node "diff $xattrs $xattrs2"
	[ $? -eq 0 ] || { error "xattrs differ"; return 5; }

	do_node $node "rm -rf $backup2 $xattrs2"
	[ $? -eq 0 ] || { error "Unable to delete temporary files"; return 6; }
}

test_52() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	start_mds || error "Unable to start MDS"
	start_ost || error "Unable to start OST1"
	mount_client $MOUNT || error "Unable to mount client"

	local nrfiles=8
	local ost1mnt=$(facet_mntpt ost1)
	local ost1node=$(facet_active_host ost1)
	local ost1tmp=$TMP/conf52
	local loop

	mkdir $DIR/$tdir || error "Unable to create $DIR/$tdir"
	touch $TMP/modified_first || error "Unable to create temporary file"
	local mtime=$(stat -c %Y $TMP/modified_first)
	do_node $ost1node "mkdir -p $ost1tmp &&
			   touch -m -d @$mtime $ost1tmp/modified_first" ||
		error "Unable to create temporary file"
	sleep 1

	$LFS setstripe -c -1 -S 1M $DIR/$tdir || error "$LFS setstripe failed"

	for (( i=0; i < nrfiles; i++ )); do
		multiop $DIR/$tdir/$tfile-$i Ow1048576w1048576w524288c ||
			error "multiop failed"
		echo -n .
	done
	echo

	# sync all the data and make sure no pending data on the client,
	# thus the SOM xattr would not be changed any more.
	cancel_lru_locks osc

	# backup files
	echo backup files to $TMP/$tdir
	local files=$(find $DIR/$tdir -type f -newer $TMP/modified_first)
	copy_files_xattrs $(hostname) $TMP/$tdir $TMP/file_xattrs $files ||
		error "Unable to copy files"

	umount_client $MOUNT || error "Unable to umount client"
	stop_ost || error "Unable to stop ost1"

	echo mount ost1 as ldiskfs
	do_node $ost1node mkdir -p $ost1mnt || error "Unable to create $ost1mnt"
	if ! do_node $ost1node test -b $ost1_dev; then
		loop="-o loop"
	fi
	do_node $ost1node mount -t "$ost1_FSTYPE" $loop $ost1_dev \
		$ost1mnt ||
		error "Unable to mount ost1 as ldiskfs"

	# backup objects
	echo backup objects to $ost1tmp/objects
	local objects=$(do_node $ost1node 'find '$ost1mnt'/O/[0-9]* -type f'\
		'-size +0 -newer '$ost1tmp'/modified_first -regex ".*\/[0-9]+"')
	copy_files_xattrs $ost1node $ost1tmp/objects $ost1tmp/object_xattrs \
			$objects ||
		error "Unable to copy objects"

	# move objects to lost+found
	do_node $ost1node 'mv '$objects' '${ost1mnt}'/lost+found'
	[ $? -eq 0 ] || { error "Unable to move objects"; return 14; }

	do_node $ost1node "umount $ost1mnt" ||
		error "Unable to umount ost1 as ldiskfs"

	start_ost || error "Unable to start OST1"
	mount_client $MOUNT || error "Unable to mount client"

	local REPAIRED=$(do_node $ost1node "$LCTL get_param \
			 -n osd-ldiskfs.$FSNAME-OST0000.oi_scrub" |
			 awk '/^lf_repa[ri]*ed/ { print $2 }')
	[ $REPAIRED -gt 0 ] ||
		error "Some entry under /lost+found should be repaired"

	# compare files
	diff_files_xattrs $(hostname) $TMP/$tdir $TMP/file_xattrs $files ||
		error "Unable to diff files"

	rm -rf $TMP/$tdir $TMP/file_xattrs ||
		error "Unable to delete temporary files"
	do_node $ost1node "rm -rf $ost1tmp" ||
		error "Unable to delete temporary files"
	cleanup || error "cleanup failed with $?"
}
run_test 52 "check recovering objects from lost+found"

# Checks threads_min/max/started for some service
#
# Arguments: service name (OST or MDT), facet (e.g., ost1, $SINGLEMDS), and a
# parameter pattern prefix like 'ost.*.ost'.
thread_sanity() {
	local modname=$1
	local facet=$2
	local parampat=$3
	local opts=$4
	local basethr=$5
	local tmin
	local tmin2
	local tmax
	local tmax2
	local tstarted
	local paramp
	local msg="Insane $modname thread counts"
	local ncpts=$(check_cpt_number $facet)
	local nthrs
	shift 4

	check_mount || return 41

	# We need to expand $parampat, but it may match multiple parameters, so
	# we'll pick the first one
	if ! paramp=$(do_facet $facet "lctl get_param -N ${parampat}.threads_min"|head -1); then
		error "Couldn't expand ${parampat}.threads_min parameter name"
		return 22
	fi

	# Remove the .threads_min part
	paramp=${paramp%.threads_min}

	# Check for sanity in defaults
	tmin=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
	       echo 0)
	tmax=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_max" ||
	       echo 0)
	tstarted=$(do_facet $facet "$LCTL get_param \
				    -n ${paramp}.threads_started" || echo 0)
	lassert 23 "$msg (PDSH problems?)" '(($tstarted && $tmin && $tmax))' ||
		return $?
	lassert 24 "$msg" '(($tstarted >= $tmin && $tstarted <= $tmax ))' ||
		return $?
	nthrs=$(expr $tmax - $tmin)
	if [ $nthrs -lt $ncpts ]; then
		nthrs=0
	else
		nthrs=$ncpts
	fi

	[ $tmin -eq $tmax -a $tmin -eq $tstarted ] &&
		skip_env "module parameter forced $facet thread count"

	# Check that we can change min/max
	do_facet $facet "$LCTL set_param \
			 ${paramp}.threads_min=$((tmin + nthrs))"
	do_facet $facet "$LCTL set_param \
			 ${paramp}.threads_max=$((tmax - nthrs))"
	tmin2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
		echo 0)
	tmax2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_max" ||
		echo 0)
	lassert 25 "$msg" '(($tmin2 == ($tmin + $nthrs) &&
			    $tmax2 == ($tmax - $nthrs)))' || return $?

	# Check that we can set min/max to the same value
	tmin=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
	       echo 0)
	do_facet $facet "$LCTL set_param ${paramp}.threads_max=$tmin"
	tmin2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
		echo 0)
	tmax2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_max" ||
		echo 0)
	lassert 26 "$msg" '(($tmin2 == $tmin && $tmax2 == $tmin))' || return $?

	# Check that we can't set max < min
	do_facet $facet "$LCTL set_param ${paramp}.threads_max=$((tmin - 1))"
	tmin2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
		echo 0)
	tmax2=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_max" ||
		echo 0)
	lassert 27 "$msg" '(($tmin2 <= $tmax2))' || return $?

	# We need to ensure that we get the module options desired; to do this
	# we set LOAD_MODULES_REMOTE=true and we call setmodopts below.
	LOAD_MODULES_REMOTE=true
	cleanup
	local oldvalue
	local newvalue="${opts}=$(expr $basethr \* $ncpts)"

	setmodopts -a $modname "$newvalue" oldvalue

	setup
	check_mount || return 41

	# Restore previous setting of MODOPTS_*
	setmodopts $modname "$oldvalue"

	(( $MDS1_VERSION > $(version_code 2.12.52.91) )) || {
		echo "skip interop for MDS < v2_12_52-91-g183cb1e3cdd2"
		return 0
	}

	# Check that $opts took
	tmin=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_min" ||
		echo 0)
	tmax=$(do_facet $facet "$LCTL get_param -n ${paramp}.threads_max" ||
		echo 0)
	tstarted=$(do_facet $facet \
		   "$LCTL get_param -n ${paramp}.threads_started" || echo 0)
	lassert 28 "$msg" '(($tstarted >= $tmin && $tstarted <= $tmax ))' ||
		return $?
}

test_53a() {
	setup
	thread_sanity OST ost1 'ost.*.ost' 'oss_num_threads' '16'
	cleanup || error "cleanup failed with rc $?"
}
run_test 53a "check OSS thread count params"

test_53b() {
	setup
	thread_sanity MDT $SINGLEMDS 'mds.*.*.' 'mds_num_threads' 16
	cleanup || error "cleanup failed with $?"
}
run_test 53b "check MDS thread count params"

test_54a() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	do_rpc_nodes $(facet_host ost1) run_llverdev $(ostdevname 1) -p ||
		error "llverdev failed with rc=$?"
	reformat_and_config
}
run_test 54a "test llverdev and partial verify of device"

test_54b() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	setup
	run_llverfs $MOUNT -p || error "llverfs failed with rc=$?"
	cleanup || error "cleanup failed with rc=$?"
}
run_test 54b "test llverfs and partial verify of filesystem"

lov_objid_size()
{
	local max_ost_index=$1

	echo -n $(((max_ost_index + 1) * 8))
}

test_55() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	local mdsdev=$(mdsdevname 1)
	local mdsvdev=$(mdsvdevname 1)

	for i in 1023 2048
	do
		if ! combined_mgs_mds; then
			stop_mgs || error "stopping MGS service failed"
			format_mgs || error "formatting MGT failed"
		fi
		add mds1 $(mkfs_opts mds1 ${mdsdev}) --reformat $mdsdev \
			$mdsvdev || exit 10
		add ost1 $(mkfs_opts ost1 $(ostdevname 1)) --index=$i \
			--reformat $(ostdevname 1) $(ostvdevname 1)
		setup_noconfig
		stopall
		setup_noconfig
		sync

		echo checking size of lov_objid for ost index $i
		LOV_OBJID_SIZE=$(do_facet mds1 "$DEBUGFS -R 'stat lov_objid' $mdsdev 2>/dev/null" |
				 grep ^User | awk -F 'Size: ' '{print $2}')
		if [ "$LOV_OBJID_SIZE" != $(lov_objid_size $i) ]; then
			error "lov_objid size has to be $(lov_objid_size $i), not $LOV_OBJID_SIZE"
		else
			echo ok, lov_objid size is correct: $LOV_OBJID_SIZE
		fi
		stopall
	done

	reformat_and_config
}
run_test 55 "check lov_objid size"

test_56a() {
	local mds_journal_size_orig=$MDSJOURNALSIZE
	local n

	MDSJOURNALSIZE=16

	formatall
	add ost1 $(mkfs_opts ost1 $(ostdevname 1)) --index=10000 --reformat \
		$(ostdevname 1) $(ostvdevname 1)
	add ost2 $(mkfs_opts ost2 $(ostdevname 2)) --index=1000 --reformat \
		$(ostdevname 2) $(ostvdevname 2)

	start_mgsmds
	start_ost || error "Unable to start first ost (idx 10000)"
	start_ost2 || error "Unable to start second ost (idx 1000)"
	mount_client $MOUNT || error "Unable to mount client"
	echo ok
	$LFS osts

	# test instantiating PFL components with sparse index LU-15513
	mkdir -p $MOUNT/$tdir
	$LFS setstripe -E 4M -c 1 -E 1G -c 4 -S4M -E eof -c -1 $MOUNT/$tdir
	dd if=/dev/zero of=$MOUNT/$tdir/$tfile bs=4K count=1 seek=10k ||
		error "dd to second component failed"

	if [[ "$MDS1_VERSION" -ge $(version_code 2.6.54) ]] ||
	   [[ "$MDS1_VERSION" -ge $(version_code 2.5.4) &&
	      "$MDS1_VERSION" -lt $(version_code 2.5.11) ]]; then
		wait_osc_import_state mds ost1 FULL
		wait_osc_import_state mds ost2 FULL
		$LFS setstripe --stripe-count=-1 $DIR/$tfile ||
			error "Unable to setstripe $DIR/$tfile"
		n=$($LFS getstripe --stripe-count $DIR/$tfile)
		[ "$n" -eq 2 ] || error "Stripe count not two: $n"
		rm $DIR/$tfile
	fi

	stopall
	MDSJOURNALSIZE=$mds_journal_size_orig
	reformat_and_config
}
run_test 56a "check big OST indexes and out-of-index-order start"

cleanup_56b() {
	trap 0

	umount_client $MOUNT -f || error "unmount client failed"
	stop mds1
	stop mds2
	stop mds3
	stopall
	reformat_and_config
}

test_56b() {
	[ $MDSCOUNT -lt 3 ] && skip "needs >= 3 MDTs"

	trap cleanup_56b EXIT RETURN ERR
	stopall

	if ! combined_mgs_mds ; then
		format_mgs
		start_mgs
	fi

	add mds1 $(mkfs_opts mds1 $(mdsdevname 1)) --index=0 --reformat \
		$(mdsdevname 1) $(mdsvdevname 1)
	add mds2 $(mkfs_opts mds2 $(mdsdevname 2)) --index=1 --reformat \
		$(mdsdevname 2) $(mdsvdevname 2)
	add mds3 $(mkfs_opts mds3 $(mdsdevname 3)) --index=1000 --reformat \
		$(mdsdevname 3) $(mdsvdevname 3)
	format_ost 1
	format_ost 2

	start_mdt 1 || error "MDT 1 (idx 0) start failed"
	start_mdt 2 || error "MDT 2 (idx 1) start failed"
	start_mdt 3 || error "MDT 3 (idx 1000) start failed"
	start_ost || error "Unable to start first ost"
	start_ost2 || error "Unable to start second ost"

	do_nodes $(mdts_nodes) "$LCTL set_param mdt.*.enable_remote_dir=1 \
		mdt.*.enable_remote_dir_gid=-1"

	mount_client $MOUNT || error "Unable to mount client"

	$LFS mkdir -c3 $MOUNT/$tdir || error "failed to make testdir"

	echo "This is test file 1!" > $MOUNT/$tdir/$tfile.1 ||
		error "failed to make test file 1"
	echo "This is test file 2!" > $MOUNT/$tdir/$tfile.2 ||
		error "failed to make test file 2"
	echo "This is test file 1000!" > $MOUNT/$tdir/$tfile.1000 ||
		error "failed to make test file 1000"

	rm -rf $MOUNT/$tdir || error "failed to remove testdir"

	$LFS mkdir -i1000 $MOUNT/$tdir.1000 ||
		error "create remote dir at idx 1000 failed"

	output=$($LFS df)
	echo "=== START lfs df OUTPUT ==="
	echo -e "$output"
	echo "==== END lfs df OUTPUT ===="

	mdtcnt=$(echo -e "$output" | grep $FSNAME-MDT | wc -l)
	ostcnt=$(echo -e "$output" | grep $FSNAME-OST | wc -l)

	echo "lfs df returned mdt count $mdtcnt and ost count $ostcnt"
	[ $mdtcnt -eq 3 ] || error "lfs df returned wrong mdt count"
	[ $ostcnt -eq 2 ] || error "lfs df returned wrong ost count"

	echo "This is test file 1!" > $MOUNT/$tdir.1000/$tfile.1 ||
		error "failed to make test file 1"
	echo "This is test file 2!" > $MOUNT/$tdir.1000/$tfile.2 ||
		error "failed to make test file 2"
	echo "This is test file 1000!" > $MOUNT/$tdir.1000/$tfile.1000 ||
		error "failed to make test file 1000"
	rm -rf $MOUNT/$tdir.1000 || error "failed to remove remote_dir"

	output=$($LFS mdts)
	echo "=== START lfs mdts OUTPUT ==="
	echo -e "$output"
	echo "==== END lfs mdts OUTPUT ===="

	echo -e "$output" | grep -v "MDTS:" | awk '{print $1}' |
		sed 's/://g' > $TMP/mdts-actual.txt
	sort $TMP/mdts-actual.txt -o $TMP/mdts-actual.txt

	echo -e "0\n1\n1000" > $TMP/mdts-expected.txt

	diff $TMP/mdts-expected.txt $TMP/mdts-actual.txt
	result=$?

	rm $TMP/mdts-expected.txt $TMP/mdts-actual.txt

	[ $result -eq 0 ] || error "target_obd proc file is incorrect!"
}
run_test 56b "test target_obd correctness with nonconsecutive MDTs"

test_57a() { # bug 22656
	do_rpc_nodes $(facet_active_host ost1) load_modules_local
	local NID=$(do_facet ost1 "$LCTL get_param nis" |
		    tail -1 | awk '{print $1}')
	writeconf_or_reformat
	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	do_facet ost1 "$TUNEFS --failnode=$NID `ostdevname 1`" ||
		error "tunefs failed"
	start_mgsmds
	start_ost && error "OST registration from failnode should fail"
	cleanup
}
run_test 57a "initial registration from failnode should fail (should return errs)"

test_57b() {
	do_rpc_nodes $(facet_active_host ost1) load_modules_local
	local NID=$(do_facet ost1 "$LCTL get_param nis" |
		    tail -1 | awk '{print $1}')
	writeconf_or_reformat
	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	do_facet ost1 "$TUNEFS --servicenode=$NID `ostdevname 1`" ||
		error "tunefs failed"
	start_mgsmds
	start_ost || error "OST registration from servicenode should not fail"
	cleanup
}
run_test 57b "initial registration from servicenode should not fail"

count_osts() {
	do_facet mgs $LCTL get_param mgs.MGS.live.$FSNAME | grep OST | wc -l
}

test_58() { # bug 22658
	combined_mgs_mds || stop_mgs || error "stopping MGS service failed"
	setup_noconfig
	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	createmany -o $DIR/$tdir/$tfile-%d 100
	unlinkmany $DIR/$tdir/$tfile-%d 100
	stop_mds || error "Unable to stop MDS"

	local MNTDIR=$(facet_mntpt $SINGLEMDS)
	local devname=$(mdsdevname ${SINGLEMDS//mds/})

	# remove all files from the OBJECTS dir
	mount_fstype $SINGLEMDS

	do_facet $SINGLEMDS "find $MNTDIR/O/1/d* -type f -delete"

	unmount_fstype $SINGLEMDS
	# restart MDS with missing llog files
	start_mds || error "unable to start MDS"
	do_facet $SINGLEMDS "$LCTL set_param fail_loc=0"
	cleanup
}
run_test 58 "missing llog files must not prevent MDT from mounting"

test_59() {
	start_mgsmds >> /dev/null
	local C1=$(count_osts)
	if [ $C1 -eq 0 ]; then
		start_ost >> /dev/null
		C1=$(count_osts)
	fi
	stopall
	echo "original ost count: $C1 (expect > 0)"
	[ $C1 -gt 0 ] || error "No OSTs in $FSNAME log"
	start_mgsmds -o writeconf >> /dev/null || error "MDT start failed"
	local C2=$(count_osts)
	echo "after mdt writeconf count: $C2 (expect 0)"
	[ $C2 -gt 0 ] && error "MDT writeconf should erase OST logs"
	echo "OST start without writeconf should fail:"
	start_ost >> /dev/null &&
		error "OST start without writeconf didn't fail"
	echo "OST start with writeconf should succeed:"
	start_ost -o writeconf >> /dev/null || error "OST1 start failed"
	local C3=$(count_osts)
	echo "after ost writeconf count: $C3 (expect 1)"
	[ $C3 -eq 1 ] || error "new OST writeconf should add:"
	start_ost2 -o writeconf >> /dev/null || error "OST2 start failed"
	local C4=$(count_osts)
	echo "after ost2 writeconf count: $C4 (expect 2)"
	[ $C4 -eq 2 ] || error "OST2 writeconf should add log"
	stop_ost2 >> /dev/null
	cleanup_nocli >> /dev/null
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 59 "writeconf mount option"

test_60a() { # LU-471
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	local num

	for num in $(seq $MDSCOUNT); do
		add mds${num} $(mkfs_opts mds${num} $(mdsdevname $num)) \
			--mkfsoptions='\" -E stride=64 -O ^uninit_bg\"' \
			--reformat $(mdsdevname $num) $(mdsvdevname $num) ||
			exit 10
	done

	dump=$(do_facet $SINGLEMDS dumpe2fs $(mdsdevname 1))
	[ ${PIPESTATUS[0]} -eq 0 ] || error "dumpe2fs $(mdsdevname 1) failed"

	# MDT default has dirdata feature
	echo $dump | grep dirdata > /dev/null || error "dirdata is not set"
	# we disable uninit_bg feature
	echo $dump | grep uninit_bg > /dev/null && error "uninit_bg is set"
	# we set stride extended options
	echo $dump | grep stride > /dev/null || error "stride is not set"
	stop_mds
	reformat_and_config
}
run_test 60a "check mkfs.lustre --mkfsoptions -E -O options setting"

test_60b() {
	[[ "$mds1_FSTYPE" == ldiskfs ]] || skip "ldiskfs only test"

	local features=$(do_facet $SINGLEMDS $DUMPE2FS $(mdsdevname 1) |
			 grep features)
	[ ${PIPESTATUS[0]} -eq 0 ] || error "$DUMPE2FS $(mdsdevname 1) failed"

	echo $features
	# ea_inode feature should be enabled by default for MDTs
	[[ "$features" =~ "ea_inode" ]] || error "ea_inode is not set"
	# large_dir feature should be enabled by default for MDTs
	[[ "$features" =~ "large_dir" ]] || error "large_dir is not set"
}
run_test 60b "check mkfs.lustre MDT default features"

test_61a() { # LU-80
	local lxattr=$(large_xattr_enabled)

	(( "$MDS1_VERSION" >= $(version_code 2.1.53) )) ||
		skip "Need MDS version at least 2.1.53 for large_xattr"

	if [[ "$mds1_FSTYPE" == ldiskfs ]] && ! large_xattr_enabled; then
		lxattr=true

		for ((num=1; num <= $MDSCOUNT; num++)); do
			do_facet mds${num} $TUNE2FS -O ea_inode \
				$(mdsdevname $num) ||
				error "tune2fs on mds $num failed"
		done
	fi

	setup || error "setting up the filesystem failed"
	client_up || error "starting client failed"

	local file=$DIR/$tfile
	touch $file || error "touch $file failed"

	local large_value="$(generate_string $(max_xattr_size))"
	local small_value="bar"

	local name="trusted.big"
	log "save large xattr of $(max_xattr_size) bytes on $name on $file"
	setfattr -n $name -v $large_value $file ||
		error "saving $name on $file failed"

	local new_value=$(get_xattr_value $name $file)
	[[ "$new_value" != "$large_value" ]] &&
		error "$name different after saving"

	log "shrink value of $name on $file"
	setfattr -n $name -v $small_value $file ||
		error "shrinking value of $name on $file failed"

	new_value=$(get_xattr_value $name $file)
	[[ "$new_value" != "$small_value" ]] &&
		error "$name different after shrinking"

	log "grow value of $name on $file"
	setfattr -n $name -v $large_value $file ||
		error "growing value of $name on $file failed"

	new_value=$(get_xattr_value $name $file)
	[[ "$new_value" != "$large_value" ]] &&
		error "$name different after growing"

	log "check value of $name on $file after remounting MDS"
	fail $SINGLEMDS
	new_value=$(get_xattr_value $name $file)
	[[ "$new_value" != "$large_value" ]] &&
		error "$name different after remounting MDS"

	log "remove large xattr $name from $file"
	setfattr -x $name $file || error "removing $name from $file failed"

	if $lxattr && [ "$mds1_FSTYPE" == ldiskfs ]; then
		stopall || error "stopping for e2fsck run"
		for num in $(seq $MDSCOUNT); do
			run_e2fsck $(facet_active_host mds$num) \
				$(mdsdevname $num) "-y" ||
				error "e2fsck MDT$num failed"
		done
		setup_noconfig || error "remounting the filesystem failed"
	fi

	# need to delete this file to avoid problems in other tests
	rm -f $file
	cleanup || error "stopping systems failed"
}
run_test 61a "large xattr"

test_61b() { # LU-80
	local lxattr=$(large_xattr_enabled)

	(( $MDS1_VERSION >= $(version_code 2.15.51) )) ||
		skip "Need MDS version at least 2.15.51 for large_xattr fix"

	[[ "$mds1_FSTYPE" == "ldiskfs" ]] || skip "ldiskfs specific bug"

	if ! large_xattr_enabled; then
		lxattr=true

		for (( num=1; num <= $MDSCOUNT; num++ )); do
			do_facet mds${num} $TUNE2FS -O ea_inode \
				$(mdsdevname $num) ||
				error "tune2fs on mds $num failed"
		done
	fi

	setup || error "setting up the filesystem failed"
	client_up || error "starting client failed"

	local _file=$MOUNT/panda
	local large_value="$(generate_string $(max_xattr_size))"
	local name="trusted.big"

	touch ${_file} || error "touch ${_file} failed"
	setfattr -n $name -v $large_value ${_file} ||
		error "saving $name on $file failed"

	MDT_DEV="${FSNAME}-MDT0000"
	MDT_DEVNAME=$(mdsdevname ${SINGLEMDS//mds/})

	stopall || error "stopping for e2fsck run"


	ino=$(do_facet $SINGLEMDS "$DEBUGFS -R 'stat /ROOT/panda' \
		${MDT_DEVNAME} | grep trusted.big")
	ino=$(echo "${ino}" | awk '{print $2;}')
	echo "large ea "${ino}

	do_facet $SINGLEMDS "$DEBUGFS -w -R \\\"ln $ino /lost+found\\\" \
		 ${MDT_DEVNAME}"

	setup_noconfig || error "remounting the filesystem failed"

	do_facet $SINGLEMDS $LCTL lfsck_start -M ${MDT_DEV} -t namespace || {
		error "can't start lfsck namespace"
	}

	sleep 5
	wait_update_facet $SINGLEMDS "$LCTL get_param -n \
		mdd.${MDT_DEV}.lfsck_namespace |
		awk '/^status/ { print \\\$2 }'" "completed" 32 || {
		error "(2) unexpected status"
	}

	stopall || error "stopping for e2fsck run"
	for num in $(seq $MDSCOUNT); do
		run_e2fsck $(facet_active_host mds$num) \
			$(mdsdevname $num) "-y" ||
			error "e2fsck MDT$num failed"
	done
	setup_noconfig || error "remounting the filesystem failed"

	# need to delete this file to avoid problems in other tests
	rm -f $file
	cleanup || error "stopping systems failed"
}
run_test 61b "large xattr"

test_62() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi
	[[ "$MDS1_VERSION" -ge $(version_code 2.2.51) ]] ||
		skip "Need MDS version at least 2.2.51"

	# MRP-118
	local mdsdev=$(mdsdevname 1)
	local ostdev=$(ostdevname 1)

	echo "disable journal for mds"
	do_facet mds1 $TUNE2FS -O ^has_journal $mdsdev || error "tune2fs failed"
	start_mds && error "MDT start should fail"
	echo "disable journal for ost"
	do_facet ost1 $TUNE2FS -O ^has_journal $ostdev || error "tune2fs failed"
	start_ost && error "OST start should fail"
	cleanup || error "cleanup failed with rc $?"
	reformat_and_config
}
run_test 62 "start with disabled journal"

test_63() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	do_rpc_nodes $(facet_active_host $SINGLEMDS) load_module ldiskfs
	local inode_slab=$(do_facet $SINGLEMDS "cat /proc/slabinfo" |
			   awk '/ldiskfs_inode_cache/ { print $5 / $6 }')
	if [ -z "$inode_slab" ]; then
		skip "ldiskfs module has not been loaded"
	fi

	if grep -q "CONFIG_DEBUG_LOCK_ALLOC=y" /boot/config-$(uname -r); then
		skip "test is not compatible with CONFIG_DEBUG_LOCK_ALLOC=y"
	fi

	echo "$inode_slab ldiskfs inodes per page"
	[ "${inode_slab%.*}" -ge "3" ] && return 0

	# If kmalloc-128 is also 1 per page - this is a debug kernel
	# and so this is not an error.
	local kmalloc128=$(do_facet $SINGLEMDS "cat /proc/slabinfo" |
			   awk '/^(dma-kmalloc|size)-128 / { print $5 / $6 }')
	# 32 128-byte chunks in 4k
	[ "${kmalloc128%.*}" -lt "32" ] ||
		error "ldiskfs inode too big, only $inode_slab objs/page, " \
		      "kmalloc128 = $kmalloc128 objs/page"
}
run_test 63 "Verify each page can at least hold 3 ldiskfs inodes"

test_64() {
	start_mds || error "unable to start MDS"
	start_ost || error "Unable to start OST1"
	start_ost2 || error "Unable to start second ost"
	mount_client $MOUNT || error "Unable to mount client"
	stop_ost2 || error "Unable to stop second ost"
	echo "$LFS df"
	$LFS df --lazy
	umount_client $MOUNT -f || error "unmount $MOUNT failed"
	cleanup_nocli || error "cleanup_nocli failed with $?"
	#writeconf to remove all ost2 traces for subsequent tests
	writeconf_or_reformat
}
run_test 64 "check lfs df --lazy "

test_65() { # LU-2237
	# Currently, the test is only valid for ldiskfs backend
	[ "$mds1_FSTYPE" != ldiskfs ] &&
		skip "ldiskfs only test"

	local devname=$(mdsdevname ${SINGLEMDS//mds/})
	local brpt=$(facet_mntpt brpt)
	local opts=""

	if ! do_facet $SINGLEMDS "test -b $devname"; then
		opts="-o loop"
	fi

	stop_mds || error "Unable to stop MDS"
	local obj=$(do_facet $SINGLEMDS \
		    "$DEBUGFS -c -R \\\"stat last_rcvd\\\" $devname" |
		    grep Inode)
	if [ -z "$obj" ]; then
		# The MDT may be just re-formatted, mount the MDT for the
		# first time to guarantee the "last_rcvd" file is there.
		start_mds || error "fail to mount the MDS for the first time"
		stop_mds || error "Unable to stop MDS"
	fi

	# remove the "last_rcvd" file
	do_facet $SINGLEMDS "mkdir -p $brpt"
	do_facet $SINGLEMDS \
		"mount -t $mds1_FSTYPE $opts $devname $brpt"
	do_facet $SINGLEMDS "rm -f ${brpt}/last_rcvd"
	do_facet $SINGLEMDS "$UMOUNT $brpt"

	# restart MDS, the "last_rcvd" file should be recreated.
	start_mds || error "fail to restart the MDS"
	stop_mds || error "Unable to stop MDS"
	obj=$(do_facet $SINGLEMDS \
	      "$DEBUGFS -c -R \\\"stat last_rcvd\\\" $devname" | grep Inode)
	[ -n "$obj" ] || error "fail to re-create the last_rcvd"
}
run_test 65 "re-create the lost last_rcvd file when server mount"

test_66() {
	[[ "$MGS_VERSION" -ge $(version_code 2.3.59) ]] ||
		skip "Need MGS version at least 2.3.59"

	check_versions || skip "do not replace_nids with mismatched versions"

	setup
	local OST1_NID=$(do_facet ost1 $LCTL list_nids | head -1)
	local MDS_NID=$(do_facet $SINGLEMDS $LCTL list_nids | head -1)

	# add EXCLUDE records to config log, they are not to be
	# removed by lctl replace_nids
	set_conf_param_and_check mds					\
	    "$LCTL get_param -n osc.$FSNAME-OST0000-osc-MDT0000.active"	\
	    "$FSNAME-OST0000.osc.active"				\
	    "0"

	echo "replace_nids should fail if MDS, OSTs and clients are UP"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 $OST1_NID &&
		error "replace_nids fail"

	umount_client $MOUNT || error "unmounting client failed"
	echo "replace_nids should fail if MDS and OSTs are UP"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 $OST1_NID &&
		error "replace_nids fail"

	stop_ost || error "Unable to stop OST1"
	echo "replace_nids should fail if MDS is UP"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 $OST1_NID &&
		error "replace_nids fail"

	stop_mds || error "stopping mds failed"

	if combined_mgs_mds; then
		start_mdt 1 "-o nosvc" ||
			error "starting mds with nosvc option failed"
	fi

	echo "command should accept two parameters"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 &&
		error "command should accept two params"

	echo "correct device name should be passed"
	do_facet mgs $LCTL replace_nids $FSNAME-WRONG0000 $OST1_NID &&
		error "wrong devname"

	echo "wrong nids list should not destroy the system"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 "wrong nids list" &&
		error "wrong parse"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 "asdfasdf, asdfadf" &&
		error "wrong parse"

	echo "replace OST nid"
	do_facet mgs $LCTL replace_nids $FSNAME-OST0000 $OST1_NID ||
		error "replace nids failed"

	echo "command should accept two parameters"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 &&
		error "command should accept two params"

	echo "wrong nids list should not destroy the system"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 "wrong nids list" &&
		error "wrong parse"

	local FAKE_NIDS="192.168.0.112@tcp1,192.168.0.112@tcp2"
	local FAKE_FAILOVER="192.168.0.113@tcp1,192.168.0.113@tcp2"
	local NIDS_AND_FAILOVER="$MDS_NID,$FAKE_NIDS:$FAKE_FAILOVER"
	echo "set NIDs with failover"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 $NIDS_AND_FAILOVER ||
		error "replace nids failed"


	echo "replace MDS nid"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 $MDS_NID ||
		error "replace nids failed"

	if ! combined_mgs_mds ; then
		stop_mgs
	else
		stop_mds || error "Unable to stop MDS"
	fi

	start_mgsmds || error "start mgsmds failed"
	set_conf_param_and_check mds					\
	    "$LCTL get_param -n osc.$FSNAME-OST0000-osc-MDT0000.active"	\
	    "$FSNAME-OST0000.osc.active"				\
	    "1"
	start_ost || error "unable to start OST"
	mount_client $MOUNT || error "mount client failed"

	check_mount || error "error after nid replace"
	cleanup || error "cleanup failed"
	reformat_and_config
}
run_test 66 "replace nids"

test_67() { #LU-2950
	local legacy="$TMP/legacy_lnet_config"
	local new="$TMP/new_routes_test"
	local out="$TMP/config_out_file"
	local verify="$TMP/conv_verify"
	local verify_conf="$TMP/conf_verify"

	# Create the legacy file that will be run through the
	# lustre_routes_conversion script
	cat <<- LEGACY_LNET_CONFIG > $legacy
		tcp1 23 192.168.213.1@tcp:1; tcp5 34 193.30.4.3@tcp:4;
		tcp2 54 10.1.3.2@tcp;
		tcp3 10.3.4.3@tcp:3;
		tcp4 10.3.3.4@tcp;
	LEGACY_LNET_CONFIG

	# Create the verification file to verify the output of
	# lustre_routes_conversion script against.
	cat <<- VERIFY_LNET_CONFIG > $verify
		tcp1: { gateway: 192.168.213.1@tcp, hop: 23, priority: 1 }
		tcp5: { gateway: 193.30.4.3@tcp, hop: 34, priority: 4 }
		tcp2: { gateway: 10.1.3.2@tcp, hop: 54 }
		tcp3: { gateway: 10.3.4.3@tcp, priority: 3 }
		tcp4: { gateway: 10.3.3.4@tcp }
	VERIFY_LNET_CONFIG

	# Create the verification file to verify the output of
	# lustre_routes_config script against
	cat <<- VERIFY_LNET_CONFIG > $verify_conf
		lctl --net tcp1 add_route 192.168.213.1@tcp 23 1
		lctl --net tcp5 add_route 193.30.4.3@tcp 34 4
		lctl --net tcp2 add_route 10.1.3.2@tcp 54 4
		lctl --net tcp3 add_route 10.3.4.3@tcp 1 3
		lctl --net tcp4 add_route 10.3.3.4@tcp 1 3
	VERIFY_LNET_CONFIG

	$LUSTRE_ROUTES_CONVERSION $legacy $new > /dev/null
	if [ -f $new ]; then
		# verify the conversion output
		cmp -s $new $verify > /dev/null
		if [ $? -eq 1 ]; then
			error "routes conversion failed"
		fi

		lustre_routes_config --dry-run --verbose $new > $out
		# check that the script succeeded
		cmp -s $out $verify_conf > /dev/null
		if [ $? -eq 1 ]; then
			error "routes config failed"
		fi
	else
		error "routes conversion test failed"
	fi
	# remove generated files
	rm -f $new $legacy $verify $verify_conf $out
}
run_test 67 "test routes conversion and configuration"

test_68() {
	local fid
	local seq
	local START
	local END

	[ "$MDS1_VERSION" -ge $(version_code 2.4.53) ] ||
		skip "Need MDS version at least 2.4.53"

	umount_client $MOUNT || error "umount client failed"

	start_mgsmds
	start_ost

	# START-END - the sequences we'll be reserving
	START=$(do_facet $SINGLEMDS \
		$LCTL get_param -n seq.ctl*.space | awk -F'[[ ]' '{print $2}')
	END=$((START + (1 << 30)))
	do_facet $SINGLEMDS \
		$LCTL set_param seq.ctl*.fldb="[$START-$END\):0:mdt"

	# reset the sequences MDT0000 has already assigned
	do_facet $SINGLEMDS \
		$LCTL set_param seq.srv*MDT0000.space=clear

	# remount to let the client allocate new sequence
	mount_client $MOUNT || error "mount client failed"

	touch $DIR/$tfile || error "touch $DIR/$tfile failed"
	do_facet $SINGLEMDS \
		$LCTL get_param seq.srv*MDT0000.space
	$LFS path2fid $DIR/$tfile

	local old_ifs="$IFS"
	IFS='[:]'
	fid=($($LFS path2fid $DIR/$tfile))
	IFS="$old_ifs"
	let seq=${fid[1]}

	if [[ $seq < $END ]]; then
		error "used reserved sequence $seq?"
	fi
	cleanup || error "cleanup failed with $?"
}
run_test 68 "be able to reserve specific sequences in FLDB"

# Test 69: is about the total number of objects ever created on an OST.
# so that when it is reformatted the normal MDS->OST orphan recovery won't
# just "precreate" the missing objects. In the past it might try to recreate
# millions of objects after an OST was reformatted
test_69() {
	setup
	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	do_nodes $(osts_nodes) \
		$LCTL set_param seq.*OST*-super.width=$DATA_SEQ_MAX_WIDTH

	# use OST0000 since it probably has the most creations
	local OSTNAME=$(ostname_from_index 0)
	local mdtosc_proc1=$(get_mdtosc_proc_path mds1 $OSTNAME)
	local last_id=$(do_facet mds1 $LCTL get_param -n \
			osp.$mdtosc_proc1.prealloc_last_id)

	# Want to have OST LAST_ID over 5 * OST_MAX_PRECREATE to
	# verify that the LAST_ID recovery is working properly. If
	# not, then the OST will refuse to allow the MDS connect
	# because the LAST_ID value is too different from the MDS
	#define OST_MAX_PRECREATE=20000
	local ost_max_pre=20000
	local num_create=$(( ost_max_pre * 5 + 1 - last_id))

	# If the LAST_ID is already over 5 * OST_MAX_PRECREATE, we don't
	# need to create any files. So, skip this section.
	if (( num_create > 0 )); then
		# Check the number of inodes available on OST0
		local files=0
		local ifree=$($LFS df -i $MOUNT |
			awk '/OST0000/ { print $4 }'; exit ${PIPESTATUS[0]})
		log "On OST0, $ifree inodes available. Want $num_create. rc=$?"

		$LFS setstripe -i 0 $DIR/$tdir ||
			error "$LFS setstripe -i 0 $DIR/$tdir failed"
		if (( ifree < 10000 )); then
			files=$(( ifree - 50 ))
		else
			files=10000
		fi

		local j=$((num_create / files + 1))
		for i in $(seq 1 $j); do
			createmany -o $DIR/$tdir/$tfile-$i- $files ||
				error "createmany fail create $files files: $?"
			unlinkmany $DIR/$tdir/$tfile-$i- $files ||
				error "unlinkmany failed unlink $files files"
		done
	fi

	# delete all of the files with objects on OST0 so the
	# filesystem is not inconsistent later on
	$LFS find $MOUNT --ost 0 -print0 | xargs -0 rm

	umount_client $MOUNT || error "umount client failed"
	stop_ost || error "OST0 stop failure"
	add ost1 $(mkfs_opts ost1 $(ostdevname 1)) --reformat --replace \
		$(ostdevname 1) $(ostvdevname 1) ||
		error "reformat and replace $ostdev failed"
	start_ost || error "OST0 restart failure"
	wait_osc_import_state mds ost FULL

	mount_client $MOUNT || error "mount client failed"
	touch $DIR/$tdir/$tfile-last || error "create file after reformat"
	local idx=$($LFS getstripe -i $DIR/$tdir/$tfile-last)
	(( idx == 0 )) || error "$DIR/$tdir/$tfile-last on $idx not 0"

	local iused=$($LFS df -i $MOUNT |
		awk '/OST0000/ { print $3 }'; exit ${PIPESTATUS[0]})
	log "On OST0, $iused used inodes rc=$?"
	(( iused < ost_max_pre + 1000 )) ||
		error "OST replacement created too many inodes; $iused"

	[[ "$ost1_FSTYPE" != zfs ]] || import_zpool ost1
	local ostdev=$(ostdevname 1)
	if do_facet ost1 "$TUNEFS 2>&1" | grep -q -- "--replace"; then
		umount_client $MOUNT ||
			error "umount client failed before $TUNEFS"
		stop_ost || error "stop ost1 failed before $TUNEFS"

		add ost1 $(mkfs_opts ost1 $ostdev) --reformat $ostdev \
			$(ostvdevname 1) || error "reformat $ostdev failed"

		[[ "$ost1_FSTYPE" != zfs ]] || import_zpool ost1
		do_facet ost1 "$TUNEFS --replace $ostdev" ||
			error "$TUNEFS replace $ostdev failed"

		start_ost || error "restart ost1 failed after $TUNEFS"
		wait_osc_import_state mds ost FULL

		mount_client $MOUNT || error "mount client failed after $TUNEFS"
	fi

	cleanup || error "cleanup failed with $?"
}
run_test 69 "replace an OST with the same index"

test_70a() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	local MDTIDX=1

	cleanup || error "cleanup failed with $?"

	start_mdt 1 || error "MDT0 start fail"

	start_ost || error "OST0 start fail"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "create $DIR/$tdir failed"

	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir fail"

	rm -rf $DIR/$tdir || error "delete dir fail"
	cleanup || error "cleanup failed with $?"
}
run_test 70a "start MDT0, then OST, then MDT1"

test_70b() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	local MDTIDX=1

	start_ost || error "OST0 start fail"

	start_mds || error "MDS start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "create $DIR/$tdir failed"

	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir fail"

	rm -rf $DIR/$tdir || error "delete dir fail"

	cleanup || error "cleanup failed with $?"
}
run_test 70b "start OST, MDT1, MDT0"

test_70c() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	local MDTIDX=1

	start_mds || error "MDS start fail"
	start_ost || error "OST0 start fail"

	mount_client $MOUNT || error "mount client fails"
	stop_mdt 1 || error "MDT1 start fail"

	local mdc_for_mdt1=$($LCTL dl | grep MDT0000-mdc | awk '{print $4}')
	echo "deactivate $mdc_for_mdt1"
	$LCTL --device $mdc_for_mdt1 deactivate ||
		error "set $mdc_for_mdt1 deactivate failed"

	mkdir $DIR/$tdir && error "mkdir succeed"

	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir &&
		error "create remote dir succeed"

	cleanup || error "cleanup failed with $?"
}
run_test 70c "stop MDT0, mkdir fail, create remote dir fail"

test_70d() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	local MDTIDX=1

	start_mds || error "MDS start fail"
	start_ost || error "OST0 start fail"

	mount_client $MOUNT || error "mount client fails"

	stop_mdt 2 || error "MDT1 start fail"

	local mdc_for_mdt2=$($LCTL dl | grep MDT0001-mdc |
			     awk '{print $4}')
	echo "deactivate $mdc_for_mdt2"
	$LCTL --device $mdc_for_mdt2 deactivate ||
		error "set $mdc_for_mdt2 deactivate failed"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir &&
		error "create remote dir succeed"

	rm -rf $DIR/$tdir || error "delete dir fail"

	cleanup || error "cleanup failed with $?"
}
run_test 70d "stop MDT1, mkdir succeed, create remote dir fail"

test_70e() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"

	[ "$MDS1_VERSION" -ge $(version_code 2.7.62) ] ||
		skip "Need MDS version at least 2.7.62"

	reformat || error "reformat failed with $?"

	load_modules

	local mdsdev=$(mdsdevname 1)
	local ostdev=$(ostdevname 1)
	local mdsvdev=$(mdsvdevname 1)
	local ostvdev=$(ostvdevname 1)
	local opts_mds="$(mkfs_opts mds1 $mdsdev) --reformat $mdsdev $mdsvdev"
	local opts_ost="$(mkfs_opts ost1 $ostdev) --reformat $ostdev $ostvdev"

	if ! combined_mgs_mds ; then
		start_mgs
	fi

	add mds1 $opts_mds || error "add mds1 failed"
	start_mdt 1 || error "start mdt1 failed"
	add ost1 $opts_ost || error "add ost1 failed"
	start_ost || error "start ost failed"
	mount_client $MOUNT > /dev/null || error "mount client $MOUNT failed"

	local soc=$(do_facet mds1 "$LCTL get_param -n \
		    mdt.*MDT0000.sync_lock_cancel")
	[ $soc == "never" ] || error "SoC enabled on single MDS"

	for i in $(seq 2 $MDSCOUNT); do
		mdsdev=$(mdsdevname $i)
		mdsvdev=$(mdsvdevname $i)
		opts_mds="$(mkfs_opts mds$i $mdsdev) --reformat $mdsdev \
			  $mdsvdev"
		add mds$i $opts_mds || error "add mds$i failed"
		start_mdt $i || error "start mdt$i fail"
	done

	wait_dne_interconnect

	for i in $(seq $MDSCOUNT); do
		soc=$(do_facet mds$i "$LCTL get_param -n \
			mdt.*MDT000$((i - 1)).sync_lock_cancel")
		[ $soc == "blocking" ] || error "SoC not enabled on DNE"
	done

	for i in $(seq 2 $MDSCOUNT); do
		stop_mdt $i || error "stop mdt$i fail"
	done
	soc=$(do_facet mds1 "$LCTL get_param -n \
		mdt.*MDT0000.sync_lock_cancel")
	[ $soc == "never" ] || error "SoC enabled on single MDS"
	umount_client $MOUNT -f > /dev/null

	cleanup || error "cleanup failed with $?"
}
run_test 70e "Sync-on-Cancel will be enabled by default on DNE"

test_71a() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	if combined_mgs_mds; then
		skip "needs separate MGS/MDT"
	fi
	local MDTIDX=1

	start_mdt 1 || error "MDT0 start fail"
	start_ost || error "OST0 start fail"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done

	start_ost2 || error "OST1 start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir succeed"

	mcreate $DIR/$tdir/remote_dir/$tfile || error "create file failed"
	rm -rf $DIR/$tdir || error "delete dir fail"

	umount_client $MOUNT || error "umount_client failed"
	stop_mds || error "MDS stop fail"
	stop_ost || error "OST0 stop fail"
	stop_ost2 || error "OST1 stop fail"
}
run_test 71a "start MDT0 OST0, MDT1, OST1"

test_71b() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	if combined_mgs_mds; then
		skip "needs separate MGS/MDT"
	fi
	local MDTIDX=1

	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done
	start_ost || error "OST0 start fail"
	start_mdt 1 || error "MDT0 start fail"
	start_ost2 || error "OST1 start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir succeed"

	mcreate $DIR/$tdir/remote_dir/$tfile || error "create file failed"
	rm -rf $DIR/$tdir || error "delete dir fail"

	umount_client $MOUNT || error "umount_client failed"
	stop_mds || error "MDT0 stop fail"
	stop_ost || error "OST0 stop fail"
	stop_ost2 || error "OST1 stop fail"
}
run_test 71b "start MDT1, OST0, MDT0, OST1"

test_71c() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	combined_mgs_mds && skip "needs separate MGS/MDT"

	local MDTIDX=1

	start_ost || error "OST0 start fail"
	start_ost2 || error "OST1 start fail"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done
	start_mdt 1 || error "MDT0 start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir succeed"

	mcreate $DIR/$tdir/remote_dir/$tfile || error "create file failed"
	rm -rf $DIR/$tdir || error "delete dir fail"

	umount_client $MOUNT || error "umount_client failed"
	stop_mds || error "MDS stop fail"
	stop_ost || error "OST0 stop fail"
	stop_ost2 || error "OST1 stop fail"

}
run_test 71c "start OST0, OST1, MDT1, MDT0"

test_71d() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	combined_mgs_mds && skip "needs separate MGS/MDT"

	local MDTIDX=1

	start_ost || error "OST0 start fail"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done
	start_mdt 1 || error "MDT0 start fail"
	start_ost2 || error "OST1 start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
			error "create remote dir succeed"

	mcreate $DIR/$tdir/remote_dir/$tfile || error "create file failed"
	rm -rf $DIR/$tdir || error "delete dir fail"

	umount_client $MOUNT || error "umount_client failed"
	stop_mds || error "MDS stop fail"
	stop_ost || error "OST0 stop fail"
	stop_ost2 || error "OST1 stop fail"

}
run_test 71d "start OST0, MDT1, MDT0, OST1"

test_71e() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	combined_mgs_mds && skip "needs separate MGS/MDT"

	local MDTIDX=1

	start_ost || error "OST0 start fail"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num || return
	done
	start_ost2 || error "OST1 start fail"
	start_mdt 1 || error "MDT0 start fail"

	mount_client $MOUNT || error "mount client fails"

	mkdir $DIR/$tdir || error "mkdir fail"
	$LFS mkdir -i $MDTIDX $DIR/$tdir/remote_dir ||
		error "create remote dir succeed"

	mcreate $DIR/$tdir/remote_dir/$tfile || error "create file failed"
	rm -rf $DIR/$tdir || error "delete dir fail"

	umount_client $MOUNT || error "umount_client failed"
	stop_mds || error "MDS stop fail"
	stop_ost || error "OST0 stop fail"
	stop_ost2 || error "OST1 stop fail"

}
run_test 71e "start OST0, MDT1, OST1, MDT0"

test_72() { #LU-2634
	[ "$mds1_FSTYPE" != ldiskfs ] &&
		skip "ldiskfs only test"

	local mdsdev=$(mdsdevname 1)
	local ostdev=$(ostdevname 1)
	local cmd="$E2FSCK -fnvd $mdsdev"
	local fn=3
	local add_options

	cleanup
	load_modules

	if combined_mgs_mds; then
		add_options='--reformat'
	else
		add_options='--reformat --replace'
	fi

	#tune MDT with "-O extents"

	for num in $(seq $MDSCOUNT); do
		add mds${num} $(mkfs_opts mds$num $(mdsdevname $num)) \
			$add_options $(mdsdevname $num) $(mdsvdevname $num) ||
			error "add mds $num failed"
		do_facet mds${num} "$TUNE2FS -O extents $(mdsdevname $num)" ||
			error "$TUNE2FS failed on mds${num}"
	done

	add ost1 $(mkfs_opts ost1 $ostdev) $add_options $ostdev ||
		error "add $ostdev failed"
	start_mds || error "start mds failed"
	start_ost || error "start ost failed"
	mount_client $MOUNT || error "mount client failed"

	#create some short symlinks
	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	createmany -o $DIR/$tdir/$tfile-%d $fn
	echo "create $fn short symlinks"
	for i in $(seq -w 1 $fn); do
		ln -s $DIR/$tdir/$tfile-$i $MOUNT/$tfile-$i
	done
	ls -al $MOUNT

	#umount
	umount_client $MOUNT || error "umount client failed"
	stop_mds || error "stop mds failed"
	stop_ost || error "stop ost failed"

	#run e2fsck
	run_e2fsck $(facet_active_host $SINGLEMDS) $mdsdev "-n"
}
run_test 72 "test fast symlink with extents flag enabled"

test_73a() { #LU-3006
	[[ "$ost1_FSTYPE" == zfs ]] && import_zpool ost1
	local ostdev=$(ostdevname 1)

	do_facet ost1 "$TUNEFS --failnode=1.2.3.4@$NETTYPE $ostdev" ||
		error "1st tunefs failed"
	start_mgsmds || error "start mds failed"
	start_ost || error "start ost failed"
	mount_client $MOUNT || error "mount client failed"
	$LCTL get_param -n osc.*OST0000-osc-[^M]*.import |
		grep "failover_nids.*1.2.3.4@$NETTYPE" ||
		error "failover nids haven't changed"
	umount_client $MOUNT || error "umount client failed"
	stop_ost
	do_facet ost1 "$TUNEFS --erase-param failover.node $ostdev"
	stop_mds
}
run_test 73a "failnode to update from mountdata properly"

test_73b() {
	(( $OST1_VERSION >= $(version_code 2.16.50) )) ||
		skip "need OST >= 2.16.50 for many NID support"
	[[ "$ost1_FSTYPE" == zfs ]] && import_zpool ost1

	local ostdev=$(ostdevname 1)
	local nids="111.222.173._@$NETTYPE,111.222.142._@$NETTYPE"
	local iter=60
	local cmd

	do_facet ost1 "$TUNEFS --comment='just a comment for tail' $ostdev" ||
		error "1st tunefs failed"

	# 4K can fit ~200 IPv4 NIDs, try more for checking failure case too
	# add in pairs in both mgsnode and failnode to reduce test time
	for ((i = 1; i <= $iter; i++)); do
		local cmd="--failnode=${nids//_/$i} --mgsnode=${nids//_/$i}"
		do_facet ost1 "$TUNEFS $cmd $ostdev" >/dev/null ||
			break
	done

	start_mgsmds || error "Fail to start mds"
	start_ost || error "Fail to mount ost"

	local zkeeper=${KEEP_ZPOOL}
	stack_trap "KEEP_ZPOOL=$zkeeper" EXIT
	KEEP_ZPOOL="true"
	stop_ost
	stop_mds

	# count the actual number of failover NIDs configured in failover.node
	# there may be some previously configured, so they should also count
	local count=$(do_facet ost1 "$TUNEFS --erase-params $ostdev" |
		      grep "^Param" | grep -Fo '@' | wc -l)
	echo "Found total $count NIDs in parameters"

	KEEP_ZPOOL="${zkeeper}"
	reformat

	# expect to fit more that 32 mgsnode and 4*32 failover NIDs at least
	((count >= 160)) || error "Only $count NIDs found, need >= (128+32)"
}
run_test 73b "Large failnode NID list in mountdata"

cleanup_73c() {
	LOAD_MODULES_REMOTE=true cleanup
}

test_73c() {
	(( $OST1_VERSION >= $(version_code 2.16.54) )) ||
		skip "Need OST version at least 2.16.54 to don't LBUG"

	cleanup
	LOAD_MODULES_REMOTE=true load_modules

	INTERFACES=( $(lnet_if_list) )
	local inf=${INTERFACES[0]}

	do_facet ost1 "$LNETCTL lnet configure" ||
		error "unable to configure lnet on ost1"

	stack_trap "cleanup_73c"

	for ((n = 100; n <= 135; n++)); do
		do_facet ost1 "$LNETCTL net add --net ${NETTYPE}$n --if $inf" ||
			skip "unable to configure net #$n on ost1"
	done

	echo "restart with 35 nets"
	start_mgsmds
	start_ost || error "unable to start ost1"
}
run_test 73c "Server mount doesn't fail with > 32 nets"

test_73d() { #LU-18896
	(( $OST1_VERSION >= $(version_code 2.16.53) )) ||
		skip "need OST >= 2.16.53 for LU-18896 fix"
	[[ "$ost1_FSTYPE" == zfs ]] && import_zpool ost1

	local ostdev=$(ostdevname 1)

	# add bogus param to mountdata
	do_facet ost1 "$TUNEFS --erase-params \
		--param=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=1 $ostdev"
	do_facet ost1 "$TUNEFS --erase-params --mgsnode=10.23.7.1@tcp \
		--mgsnode=10.23.7.2@tcp $ostdev"
	bad=$(do_facet ost1 "$TUNEFS --erase-params" $ostdev | grep -c "xx=1")
	reformat

	(( bad == 0 )) || error "garbage in params"
}
run_test 73d "erase + new parameter doesn't corrupt mountdata"

test_73e() {
	(( $MDS1_VERSION >= $(version_code 2.16.57) )) ||
		skip "Need server version at least 2.16.57 for dynamic config"
	remote_servers || skip "need servers on remote nodes"

	cleanup
	LOAD_MODULES_REMOTE=true load_modules

	INTERFACES=( $(lnet_if_list) )
	local inf=${INTERFACES[0]}
	local net

	stack_trap "cleanup_73c"

	$LNETCTL lnet configure
	$LNETCTL set discovery 0

	start_mgsmds
	start_ost

	for rnode in $(remote_nodes_list); do
		rinf=$(do_rpc_nodes --quiet $rnode lnet_if_list)
		echo "Node: $rnode, rinf=$rinf"
		[[ -z $rinf ]] &&
			error "Failed to determine interface for $rnode"
		do_node $rnode "$LNETCTL lnet configure"
		do_node $rnode "$LNETCTL set discovery 0"

		for ((n = 10; n <= 50; n++)); do
			net=${NETTYPE}$n
			do_rpc_nodes $rnode "$LNETCTL net add --net $net --if $rinf" ||
			echo "can't add network $net on $rnode"
		done
	done

	net=${NETTYPE}50
	$LNETCTL net add --net $net --if $inf
	$LNETCTL net del --net ${NETTYPE}
	$LNETCTL net show

	local mgs_nid=$(do_facet mgs $LCTL list_nids | grep $net | head -1)
	echo "Try to mount to MGS NID $mgs_nid"
	$MOUNT_CMD $mgs_nid:/$FSNAME $MOUNT ||
		error "Mount fails on $mgs_nid"
	umount $MOUNT

	# reload modules locally to clear all client states
	unload_modules_local
	local zkeeper=${KEEP_ZPOOL}
	stack_trap "KEEP_ZPOOL=$zkeeper"
	KEEP_ZPOOL="true"
	if ! combined_mgs_mds ; then
		stop_mgs || error "stop_mgs failed"
	else
		stop_mds || error "stop_mdt 1 failed"
	fi
	start_mgsmds

	do_facet mgs $LNETCTL lnet configure
	do_facet mgs $LNETCTL set discovery 0

	load_modules_local
	$LNETCTL lnet configure
	$LNETCTL set discovery 0
	$LNETCTL net add --net $net --if $inf
	$LNETCTL net del --net ${NETTYPE}
	$LNETCTL net show

	echo "Try to mount after MGS remount"
	$MOUNT_CMD $mgs_nid:/$FSNAME $MOUNT ||
		error "Mount fails on $mgs_nid"
	check_mount || error "check client $MOUNT failed"
	$LFS df $MOUNT
	check_lfs_df_ret_val $? || error "$LFS df $MOUNT failed"
	umount $MOUNT
}
run_test 73e "Mount client with dynamic server NIDs"

# LU-15246
test_74() {
	(( $MDS1_VERSION >= $(version_code 2.15.57.16) )) ||
		skip "need MDS version >= 2.15.57.16 for per-device timeouts"

	setup
	stack_trap "cleanup"

	# Prepare fs2, share the mgs of fs
	local FSNAME2=fs15246
	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)

	add fs2mds $(mkfs_opts mds1 $fs2mdsdev) --fsname=$FSNAME2 \
		--reformat $fs2mdsdev $fs2mdsvdev || error "add fs2mds failed"
	add fs2ost $(mkfs_opts ost1 $fs2ostdev) --fsname=$FSNAME2 \
		--reformat $fs2ostdev $fs2ostvdev || error "add fs2ost failed"

	stack_trap "cleanup_fs2"

	start fs2ost $fs2ostdev $OST_MOUNT_OPTS || error "start fs2ost failed"
	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS || error "start fs2mds failed"

	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $MGSNID:/$FSNAME2 $MOUNT2 || error "mount $MOUNT2 failed"

	echo "========== All mounted lustre fs ===================="
	mount | grep 'type lustre'
	echo "====================================================="

	# Set and check osc/ldlm_enqueue_min
	$LCTL set_param osc.${FSNAME}-*.ldlm_enqueue_min=99 ||
		error "failed to set per-device adaptive parameters on client"
	stack_trap "$LCTL set_param osc.${FSNAME}-*.ldlm_enqueue_min=0"

	local ldlm_enqueue_min
	ldlm_enqueue_min=$($LCTL get_param -n osc.${FSNAME}-*.ldlm_enqueue_min \
			   | uniq)
	(( $ldlm_enqueue_min == 99 )) ||
		error "wrong ldlm_enqueue_min value for osc.${FSNAME}-*"

	# Check fs2 as reference
	ldlm_enqueue_min=$($LCTL get_param -n osc.${FSNAME2}-*.ldlm_enqueue_min\
			   | uniq)
	(( $ldlm_enqueue_min == 0 )) ||
		error "wrong ldlm_enqueue_min value for osc.${FSNAME2}-*"

	# Set and check obdfilter/at_min
	do_facet ost1 $LCTL set_param obdfilter.${FSNAME}-*.at_min=1 ||
		error "failed to set per-device adaptive parameters on ost"
	stack_trap "do_facet ost1 $LCTL set_param obdfilter.${FSNAME}-*.at_min=0"

	local at_min
	at_min=$(do_facet ost1 $LCTL get_param -n obdfilter.${FSNAME}-*.at_min \
		| uniq)
	(( $at_min == 1 )) ||
		error "wrong at_min value for obdfilter.${FSNAME}-*"

	# set and check mdc/at_max
	$LCTL set_param mdc.${FSNAME}-*.at_max=599 ||
		error "failed to set per-device adaptive parameters on client"
	stack_trap "$LCTL set_param mdc.${FSNAME}-*.at_max=0"

	local at_max
	at_max=$($LCTL get_param -n mdc.${FSNAME}-*.at_max | uniq)
	(( $at_max == 599 )) ||
		error "wrong at_max value for osc.${FSNAME}-*"

	# Check fs2 as reference
	at_max=$($LCTL get_param -n mdc.${FSNAME2}-*.at_max | uniq)
	(( $at_max == 0 )) ||
		error "wrong at_max value for osc.${FSNAME2}-*"

	# Set and check mds/at_max
	do_facet mds1 $LCTL set_param *.${FSNAME}-*.at_max=599 ||
		error "failed to set per-device adaptive parameters on mds"
	stack_trap "do_facet mds1 $LCTL set_param *.${FSNAME}-*.at_max=0"

	local at_max
	at_max=$(do_facet mds1 $LCTL get_param -n mdt.${FSNAME}-*.at_max | uniq)
	(( at_max == 599 )) ||
		error "wrong at_max value for mdt.${FSNAME}-*"

	# Set and check mgs&mgc/at_history
	local mgs_nid=$(do_facet $SINGLEMDS $LCTL list_nids | tail -1)
	$LCTL set_param mgc.MGC$mgs_nid.at_history=588
	stack_trap "$LCTL set_param mgc.MGC$mgs_nid.at_history=0"

	local at_history
	at_history=$($LCTL get_param -n mgc.MGC$mgs_nid.at_history)
	(( $at_history == 588 )) ||
		error "wrong at_history value for mgc.MGC$mgs_nid"

	do_facet mgs $LCTL set_param mgs.MGS.at_history=588
	stack_trap "do_facet mgs $LCTL set_param mgs.MGS.at_history=0"
	at_history=$(do_facet mgs $LCTL get_param -n mgs.MGS.at_history)
	(( $at_history == 588 )) ||
		error "wrong at_history value for mgs.MGS"
}
run_test 74 "Test per-device adaptive timeout parameters"

test_75() { # LU-2374
	[[ "$MDS1_VERSION" -lt $(version_code 2.4.1) ]] &&
		skip "Need MDS version at least 2.4.1"

	local index=0
	local opts_mds="$(mkfs_opts mds1 $(mdsdevname 1)) \
		--replace --reformat $(mdsdevname 1) $(mdsvdevname 1)"
	local opts_ost="$(mkfs_opts ost1 $(ostdevname 1)) \
		--replace --reformat $(ostdevname 1) $(ostvdevname 1)"

	load_modules
	#check with default parameters
	add mds1 $opts_mds || error "add mds1 failed for default params"
	add ost1 $opts_ost || error "add ost1 failed for default params"

	opts_mds=$(echo $opts_mds | sed -e "s/--mdt//")
	opts_mds=$(echo $opts_mds |
		   sed -e "s/--index=$index/--index=$index --mdt/")
	opts_ost=$(echo $opts_ost | sed -e "s/--ost//")
	opts_ost=$(echo $opts_ost |
		   sed -e "s/--index=$index/--index=$index --ost/")

	add mds1 $opts_mds || error "add mds1 failed for new params"
	add ost1 $opts_ost || error "add ost1 failed for new params"

	reformat_and_config
	return 0
}
run_test 75 "The order of --index should be irrelevant"

test_76a() {
	[[ "$MGS_VERSION" -ge $(version_code 2.4.52) ]] ||
		skip "Need MDS version at least 2.4.52"

	setup
	local MDMB_PARAM="osc.*.max_dirty_mb"
	echo "Change MGS params"
	local MAX_DIRTY_MB=$($LCTL get_param -n $MDMB_PARAM |
		head -1)
	echo "max_dirty_mb: $MAX_DIRTY_MB"
	local NEW_MAX_DIRTY_MB=$((MAX_DIRTY_MB - 10))
	echo "new_max_dirty_mb: $NEW_MAX_DIRTY_MB"
	do_facet mgs $LCTL set_param -P $MDMB_PARAM=$NEW_MAX_DIRTY_MB
	wait_update $HOSTNAME "$LCTL get_param -n $MDMB_PARAM |
		head -1" $NEW_MAX_DIRTY_MB
	MAX_DIRTY_MB=$($LCTL get_param -n $MDMB_PARAM | head -1)
	echo "$MAX_DIRTY_MB"
	[ $MAX_DIRTY_MB = $NEW_MAX_DIRTY_MB ] ||
		error "error while apply max_dirty_mb"

	echo "Check the value is stored after remount"
	stopall
	setupall
	wait_update $HOSTNAME "$LCTL get_param -n $MDMB_PARAM |
		head -1" $NEW_MAX_DIRTY_MB
	MAX_DIRTY_MB=$($LCTL get_param -n $MDMB_PARAM | head -1)
	[ $MAX_DIRTY_MB = $NEW_MAX_DIRTY_MB ] ||
		error "max_dirty_mb is not saved after remount"

	echo "Change OST params"
	CLIENT_PARAM="obdfilter.*.client_cache_count"
	local CLIENT_CACHE_COUNT
	CLIENT_CACHE_COUNT=$(do_facet ost1 $LCTL get_param -n $CLIENT_PARAM |
		head -1)
	echo "client_cache_count: $CLIENT_CACHE_COUNT"
	NEW_CLIENT_CACHE_COUNT=$((CLIENT_CACHE_COUNT+CLIENT_CACHE_COUNT))
	echo "new_client_cache_count: $NEW_CLIENT_CACHE_COUNT"
	do_facet mgs $LCTL set_param -P $CLIENT_PARAM=$NEW_CLIENT_CACHE_COUNT
	wait_update $(facet_host ost1) "$LCTL get_param -n $CLIENT_PARAM |
		head -1" $NEW_CLIENT_CACHE_COUNT
	CLIENT_CACHE_COUNT=$(do_facet ost1 $LCTL get_param -n $CLIENT_PARAM |
		head -1)
	echo "$CLIENT_CACHE_COUNT"
	[ $CLIENT_CACHE_COUNT = $NEW_CLIENT_CACHE_COUNT ] ||
		error "error while apply client_cache_count"

	echo "Check the value is stored after remount"
	stopall
	setupall
	wait_update $(facet_host ost1) "$LCTL get_param -n $CLIENT_PARAM |
		head -1" $NEW_CLIENT_CACHE_COUNT
	CLIENT_CACHE_COUNT=$(do_facet ost1 $LCTL get_param -n $CLIENT_PARAM |
		head -1)
	echo "$CLIENT_CACHE_COUNT"
	[ $CLIENT_CACHE_COUNT = $NEW_CLIENT_CACHE_COUNT ] ||
		error "client_cache_count is not saved after remount"
	stopall
}
run_test 76a "set permanent params with lctl across mounts"

test_76b() { # LU-4783
	[[ "$MGS_VERSION" -ge $(version_code 2.5.57) ]] ||
		skip "Need MGS version at least 2.5.57"
	stopall
	setupall
	do_facet mgs $LCTL get_param mgs.MGS.live.params ||
		error "start params log failed"
	stopall
}
run_test 76b "verify params log setup correctly"

test_76c() {
	[[ "$MGS_VERSION" -ge $(version_code 2.8.54) ]] ||
		skip "Need MDS version at least 2.4.52"
	setupall
	local MASK_PARAM="mdd.*.changelog_mask"
	echo "Change changelog_mask"
	do_facet mgs $LCTL set_param -P $MASK_PARAM=-CLOSE ||
		error "Can't change changlog_mask"
	wait_update $(facet_host mds) "$LCTL get_param -n $MASK_PARAM |
		grep 'CLOSE'" ""

	echo "Check the value is stored after mds remount"
	stop_mds || error "Failed to stop MDS"
	start_mds || error "Failed to start MDS"
	local CHANGELOG_MASK=$(do_facet mgs $LCTL get_param -n $MASK_PARAM)
	echo $CHANGELOG_MASK | grep CLOSE > /dev/null &&
		error "changelog_mask is not changed"

	stopall
}
run_test 76c "verify changelog_mask is applied with lctl set_param -P"

test_76d() { #LU-9399
	setupall

	local xattr_cache='llite.$inst.xattr_cache'
	local inst=($(lfs getname $MOUNT))
	local cmd="$LCTL get_param -n $xattr_cache"
	local new=$((($(eval $cmd) + 1) % 2))

	echo "lctl set_param -P llite.*.xattr_cache=$new"
	do_facet mgs $LCTL set_param -P llite.*.xattr_cache=$new ||
		error "Can't change xattr_cache"
	stack_trap "do_facet mgs $LCTL set_param -P -d llite.*.xattr_cache || true"
	wait_update $HOSTNAME "$cmd" "$new" ||
		error "$xattr_cache != $new on original client $MOUNT"

	echo "Check $xattr_cache on client $MOUNT"
	umount_client $MOUNT || error "umount $MOUNT failed"
	mount_client $MOUNT || error "mount $MOUNT failed"
	inst=($(lfs getname $MOUNT))
	wait_update $HOSTNAME "$cmd" "$new" ||
		error "$xattr_cache != $new on remount client $MOUNT"

	echo "Check $xattr_cache on the new client $MOUNT2"
	mount_client $MOUNT2 || error "mount $MOUNT2 failed"
	inst=($(lfs getname $MOUNT2))
	wait_update $HOSTNAME "$cmd" "$new" ||
		error "$xattr_cache != $new on second client $MOUNT2"
	umount_client $MOUNT2 || error "umount $MOUNT2 failed"

	do_facet mgs $LCTL set_param -P -d llite.*.xattr_cache
	stopall
}
run_test 76d "verify llite.*.xattr_cache can be set by 'lctl set_param -P' correctly"

test_77() { # LU-3445
	[[ "$MDS1_VERSION" -ge $(version_code 2.8.55) ]] ||
		skip "Need MDS version 2.8.55+ "

	if [[ -z "$fs2ost_DEV" || -z "$fs2mds_DEV" ]]; then
		is_blkdev $SINGLEMDS $(mdsdevname ${SINGLEMDS//mds/}) &&
		skip_env "mixed loopback and real device not working"
	fi

	local fs2mdsdev=$(mdsdevname 1_2)
	local fs2ostdev=$(ostdevname 1_2)
	local fs2mdsvdev=$(mdsvdevname 1_2)
	local fs2ostvdev=$(ostvdevname 1_2)
	local fsname=test1234
	local mgsnid
	local failnid="$(h2nettype 1.2.3.4),$(h2nettype 4.3.2.1)"

	combined_mgs_mds || stop_mgs || error "stopping MGS service failed"

	add fs2mds $(mkfs_opts mds1 $fs2mdsdev) --mgs --fsname=$fsname \
		--reformat $fs2mdsdev $fs2mdsvdev || error "add fs2mds failed"
	start fs2mds $fs2mdsdev $MDS_MOUNT_OPTS && trap cleanup_fs2 EXIT INT ||
		error "start fs2mds failed"

	mgsnid=$(do_facet fs2mds $LCTL list_nids | xargs | tr ' ' ,)
	mgsnid="0.0.0.0@tcp,$mgsnid,$mgsnid:$mgsnid"

	add fs2ost --mgsnode=$mgsnid $(mkfs_opts ost1 $fs2ostdev) \
		--failnode=$failnid --fsname=$fsname \
		--reformat $fs2ostdev $fs2ostvdev ||
			error "add fs2ost failed"
	start fs2ost $fs2ostdev $OST_MOUNT_OPTS || error "start fs2ost failed"

	mkdir -p $MOUNT2 || error "mkdir $MOUNT2 failed"
	$MOUNT_CMD $mgsnid:/$fsname $MOUNT2 || error "mount $MOUNT2 failed"
	DIR=$MOUNT2 MOUNT=$MOUNT2 check_mount || error "check $MOUNT2 failed"
	cleanup_fs2
}
run_test 77 "comma-separated MGS NIDs and failover node NIDs"

test_78() {
	[[ "$mds1_FSTYPE" != ldiskfs ||
	   "$ost1_FSTYPE" != ldiskfs ]] &&
		skip "ldiskfs only test"

	# reformat the Lustre filesystem with a smaller size
	local saved_MDSCOUNT=$MDSCOUNT
	local saved_MDSSIZE=$MDSSIZE
	local saved_OSTCOUNT=$OSTCOUNT
	local saved_OSTSIZE=$OSTSIZE
	MDSCOUNT=1
	OSTCOUNT=1
	MDSSIZE=$((MDSSIZE - 20000))
	OSTSIZE=$((OSTSIZE - 20000))
	reformat || error "(1) reformat Lustre filesystem failed"
	MDSSIZE=$saved_MDSSIZE
	OSTSIZE=$saved_OSTSIZE

	# mount the Lustre filesystem
	setup_noconfig || error "(2) setup Lustre filesystem failed"

	# create some files
	log "create test files"
	local i
	local file
	local num_files=100

	mkdir $MOUNT/$tdir || error "(3) mkdir $MOUNT/$tdir failed"
	$LFS df; $LFS df -i
	for i in $(seq $num_files); do
		file=$MOUNT/$tdir/$tfile-$i
		dd if=/dev/urandom of=$file count=1 bs=1M || {
			$LCTL get_param osc.*.cur*grant*
			$LFS df; $LFS df -i;
			# stop creating files if there is no more space
			if [ ! -e $file ]; then
				num_files=$((i - 1))
				break
			fi

			$LFS getstripe -v $file
			local ost_idx=$(LFS getstripe -i $file)
			do_facet ost$((ost_idx + 1)) \
				$LCTL get_param obdfilter.*.*grant*
			error "(4) create $file failed"
		}
	done

	# unmount the Lustre filesystem
	cleanup || error "(5) cleanup Lustre filesystem failed"

	# run e2fsck on the MDT and OST devices
	local mds_host=$(facet_active_host $SINGLEMDS)
	local ost_host=$(facet_active_host ost1)
	local mds_dev=$(mdsdevname ${SINGLEMDS//mds/})
	local ost_dev=$(ostdevname 1)

	run_e2fsck $mds_host $mds_dev "-y"
	run_e2fsck $ost_host $ost_dev "-y"

	# get the original block count of the MDT and OST filesystems
	local mds_orig_blks=$(get_block_count $SINGLEMDS $mds_dev)
	local ost_orig_blks=$(get_block_count ost1 $ost_dev)

	# expand the MDT and OST filesystems to the device size
	run_resize2fs $SINGLEMDS $mds_dev "" || error "expand $SINGLEMDS failed"
	run_resize2fs ost1 $ost_dev "" || error "expand ost1 failed"

	# run e2fsck on the MDT and OST devices again
	run_e2fsck $mds_host $mds_dev "-y"
	run_e2fsck $ost_host $ost_dev "-y"

	# mount the Lustre filesystem
	setup

	# check the files
	log "check files after expanding the MDT and OST filesystems"
	for i in $(seq $num_files); do
		file=$MOUNT/$tdir/$tfile-$i
		$CHECKSTAT -t file -s 1048576 $file ||
			error "(6) checkstat $file failed"
	done

	# create more files
	log "create more files after expanding the MDT and OST filesystems"
	for i in $(seq $((num_files + 1)) $((num_files + 10))); do
		file=$MOUNT/$tdir/$tfile-$i
		dd if=/dev/urandom of=$file count=1 bs=1M ||
			error "(7) create $file failed"
	done

	# unmount the Lustre filesystem
	cleanup || error "(8) cleanup Lustre filesystem failed"

	# run e2fsck on the MDT and OST devices
	run_e2fsck $mds_host $mds_dev "-y"
	run_e2fsck $ost_host $ost_dev "-y"

	# get the maximum block count of the MDT and OST filesystems
	local mds_max_blks=$(get_block_count $SINGLEMDS $mds_dev)
	local ost_max_blks=$(get_block_count ost1 $ost_dev)

	# get the minimum block count of the MDT and OST filesystems
	local mds_min_blks=$(run_resize2fs $SINGLEMDS $mds_dev "" "-P" 2>&1 |
				grep minimum | sed -e 's/^.*filesystem: //g')
	local ost_min_blks=$(run_resize2fs ost1 $ost_dev "" "-P" 2>&1 |
				grep minimum | sed -e 's/^.*filesystem: //g')

	# shrink the MDT and OST filesystems to a smaller size
	local shrunk=false
	local new_blks
	local base_blks
	if [[ $mds_max_blks -gt $mds_min_blks &&
	      $mds_max_blks -gt $mds_orig_blks ]]; then
		[[ $mds_orig_blks -gt $mds_min_blks ]] &&
			base_blks=$mds_orig_blks || base_blks=$mds_min_blks
		new_blks=$(( (mds_max_blks - base_blks) / 2 + base_blks ))
		run_resize2fs $SINGLEMDS $mds_dev $new_blks ||
			error "shrink $SINGLEMDS to $new_blks failed"
		shrunk=true
	fi

	if [[ $ost_max_blks -gt $ost_min_blks &&
	      $ost_max_blks -gt $ost_orig_blks ]]; then
		[[ $ost_orig_blks -gt $ost_min_blks ]] &&
			base_blks=$ost_orig_blks || base_blks=$ost_min_blks
		new_blks=$(( (ost_max_blks - base_blks) / 2 + base_blks ))
		run_resize2fs ost1 $ost_dev $new_blks ||
			error "shrink ost1 to $new_blks failed"
		shrunk=true
	fi

	# check whether the MDT or OST filesystem was shrunk or not
	if ! $shrunk; then
		combined_mgs_mds || stop_mgs || error "(9) stop mgs failed"
		reformat_and_config ||
			error "(10) reformat Lustre filesystem failed"
		return 0
	fi

	# run e2fsck on the MDT and OST devices again
	run_e2fsck $mds_host $mds_dev "-y"
	run_e2fsck $ost_host $ost_dev "-y"

	# mount the Lustre filesystem again
	setup

	# check the files
	log "check files after shrinking the MDT and OST filesystems"
	for i in $(seq $((num_files + 10))); do
		file=$MOUNT/$tdir/$tfile-$i
		$CHECKSTAT -t file -s 1048576 $file ||
			error "(11) checkstat $file failed"
	done

	# unmount and reformat the Lustre filesystem
	cleanup || error "(12) cleanup Lustre filesystem failed"
	combined_mgs_mds || stop_mgs || error "(13) stop mgs failed"

	MDSCOUNT=$saved_MDSCOUNT
	OSTCOUNT=$saved_OSTCOUNT
	reformat_and_config || error "(14) reformat Lustre filesystem failed"
}
run_test 78 "run resize2fs on MDT and OST filesystems"

test_79() { # LU-4227
	[[ "$MDS1_VERSION" -ge $(version_code 2.5.59) ]] ||
		skip "Need MDS version at least 2.5.59"

	local mdsdev1=$(mdsdevname 1)
	local mdsvdev1=$(mdsvdevname 1)
	local mdsdev2=$(mdsdevname 2)
	local mdsvdev2=$(mdsvdevname 2)
	local ostdev1=$(ostdevname 1)
	local ostvdev1=$(ostvdevname 1)
	local opts_mds1="$(mkfs_opts mds1 $mdsdev1) --reformat"
	local opts_mds2="$(mkfs_opts mds2 $mdsdev2) --reformat"
	local opts_ost1="$(mkfs_opts ost1 $ostdev1) --reformat"
	local mgsnode_opt

	# remove --mgs/--mgsnode from mkfs.lustre options
	opts_mds1=$(echo $opts_mds1 | sed -e "s/--mgs//")

	mgsnode_opt=$(echo $opts_mds2 |
		awk '{ for ( i = 1; i < NF; i++ )
			if ( $i ~ "--mgsnode" ) { print $i; break } }')
	[ -n "$mgsnode_opt" ] &&
		opts_mds2=$(echo $opts_mds2 | sed -e "s/$mgsnode_opt//")

	mgsnode_opt=$(echo $opts_ost1 |
		awk '{ for ( i = 1; i < NF; i++ )
			if ( $i ~ "--mgsnode" ) { print $i; break } }')
	[ -n "$mgsnode_opt" ] &&
		opts_ost1=$(echo $opts_ost1 | sed -e "s/$mgsnode_opt//")
	load_modules
	# -MGS, format a mdt without --mgs option
	add mds1 $opts_mds1 $mdsdev1 $mdsvdev1 &&
		error "Must specify --mgs when formatting mdt combined with mgs"

	# +MGS, format a mdt/ost without --mgsnode option
	add mds1 $(mkfs_opts mds1 $mdsdev1) --reformat $mdsdev1 $mdsvdev1 \
		> /dev/null || error "start mds1 failed"
	add mds2 $opts_mds2 $mdsdev2 $mdsvdev2 &&
		error "Must specify --mgsnode when formatting a mdt"
	add ost1 $opts_ost1 $ostdev1 $ostvdev1 &&
		error "Must specify --mgsnode when formatting an ost"

	reformat_and_config
}
run_test 79 "format MDT/OST without mgs option (should return errors)"

test_80() {
	start_mds || error "Failed to start MDT"
	start_ost || error "Failed to start OST1"
	uuid=$(do_facet ost1 $LCTL get_param -n mgc.*.uuid)
#define OBD_FAIL_MGS_PAUSE_TARGET_CON       0x906
	do_facet ost1 "$LCTL set_param fail_val=10 fail_loc=0x906"
	do_facet mgs "$LCTL set_param fail_val=10 fail_loc=0x906"
	do_facet mgs "$LCTL set_param -n mgs/MGS/evict_client $uuid"
	sleep 30
	start_ost2 || error "Failed to start OST2"

	do_facet ost1 "$LCTL set_param fail_loc=0"
	stop_ost2
	stop_ost
	stop_mds
}
run_test 80 "mgc import reconnect race"

#Save the original values of $OSTCOUNT and $OSTINDEX$i.
save_ostindex() {
	local new_ostcount=$1
	saved_ostcount=$OSTCOUNT
	OSTCOUNT=$new_ostcount

	local i
	local index
	for ((i = 1; i <= $OSTCOUNT; i++ )); do
		index=OSTINDEX$i
		eval saved_ostindex$i=${!index}
		eval OSTINDEX$i=""
	done
}

# Restore the original values of $OSTCOUNT and $OSTINDEX$i.
restore_ostindex() {
	local i
	local index

	echo "restoring OSTCOUNT=$saved_ostcount and OSTINDEXn"

	for ((i = 1; i <= $OSTCOUNT; i++ )); do
		index=saved_ostindex$i
		eval OSTINDEX$i=${!index}
	done
	OSTCOUNT=$saved_ostcount

	reformat
	if ! combined_mgs_mds ; then
		start_mgs
	fi
}

max_lov_stripe_index() {
	locale facet=$1

	if [[ $(lustre_version_code $facet) -lt $(version_code 2.15.64) ]]; then
		echo "65532"
	else
		echo "65503"
	fi
}

# The main purpose of this test is to ensure the OST_INDEX_LIST functions as
# expected. This test uses OST_INDEX_LIST to format OSTs with a randomly
# assigned index and ensures we can mount such a formatted file system
test_81() { # LU-4665
	(( MDS1_VERSION >= $(version_code 2.6.54) )) ||
		skip "Need MDS version at least 2.6.54"
	(( OSTCOUNT >= 3 )) || skip_env "needs >= 3 OSTs"

	stopall

	# Each time RANDOM is referenced, a random integer between 0 and 32767
	# is generated.
	local i
	local saved_ostindex1=$OSTINDEX1
	local LOV_V1_INSANE_STRIPE_INDEX=$(max_lov_stripe_index ost1)
	local invalid_index=$((LOV_V1_INSANE_STRIPE_INDEX+4))

	for i in $((LOV_V1_INSANE_STRIPE_INDEX + 3)) $((RANDOM + invalid_index)); do
		echo -e "\nFormat ost1 with --index=$i, should fail"
		OSTINDEX1=$i
		if add ost1 $(mkfs_opts ost1 $(ostdevname 1)) --reformat \
		   $(ostdevname 1) $(ostvdevname 1); then
			OSTINDEX1=$saved_ostindex1
			error "format ost1 with --index=$i should fail"
		fi
	done
	OSTINDEX1=$saved_ostindex1

	save_ostindex 3
	stack_trap restore_ostindex

	# Format OSTs with random sparse indices.
	LOV_V1_INSANE_STRIPE_INDEX=$(max_lov_stripe_index ost2)
	local rand_ost=$((RANDOM * 2 % (LOV_V1_INSANE_STRIPE_INDEX - 1) + 1))
	LOV_V1_INSANE_STRIPE_INDEX=$(max_lov_stripe_index ost3)
	echo  "Format $OSTCOUNT OSTs with OST_INDEX_LIST=[0,$rand_ost,$LOV_V1_INSANE_STRIPE_INDEX]"
	OST_INDEX_LIST=[0,$rand_ost,$LOV_V1_INSANE_STRIPE_INDEX] formatall ||
		error "formatall failed with $?"

	# Setup and check Lustre filesystem.
	start_mgsmds || error "start_mgsmds failed"
	for ((i = 1; i <= $OSTCOUNT; i++ )); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS ||
			error "start ost$i failed"
	done

	mount_client $MOUNT || error "mount client $MOUNT failed"
	check_mount || error "check client $MOUNT failed"
	$LFS df

	# Check max_easize.
	local max_easize=$($LCTL get_param -n llite.*.max_easize)
	local xattr_size_max=$((4096 - 84)) # 4096 less ldiskfs ea overhead

	# XATTR_SIZE_MAX less ldiskfs ea overhead
	large_xattr_enabled && xattr_size_max=$((65536 - 84))
	(( max_easize >= xattr_size_max )) ||
		error "max_easize $max_easize < $xattr_size_max bytes"

	test_mkdir $DIR/$tdir
	$LFS setstripe -i $rand_ost $DIR/$tdir/$tfile ||
		error "error creating $tfile on ost$rand_ost"
	$LFS getstripe $DIR/$tdir/$tfile

	local cmd
	local idx
	local found
	local uuid

	cmd="getstripe -i $DIR/$tdir/$tfile"
	echo lfs $cmd
	found=$($LFS $cmd)
	(( $found == $rand_ost )) || error "index $found is not $rand_ost"

	cmd="find $DIR/$tdir -i $rand_ost"
	echo lfs $cmd
	$LFS $cmd
	found=$($LFS $cmd)
	[[ "$found" == "$DIR/$tdir/$tfile" ]] ||
		error "'lfs find' returned '$found', not '$tfile' by index"

	$LFS osts
	uuid=$(ostuuid_from_index $rand_ost)

	cmd="find $DIR/$tdir -O $uuid"
	echo lfs $cmd
	$LFS $cmd
	found=$($LFS $cmd)

	[[ "$found" == "$DIR/$tdir/$tfile" ]] ||
		error "'lfs find' returned '$found', not '$tfile' by UUID"
}
run_test 81 "sparse OST indexing"

random_ost_indices() {
	local num=$1
	local LOV_V1_INSANE_STRIPE_INDEX
	local index
	local skip
	local i=0

	while ((i < num)); do
		skip=false

		LOV_V1_INSANE_STRIPE_INDEX=$(max_lov_stripe_index ost$((i+1)))
		index=$(((RANDOM * 2) % LOV_V1_INSANE_STRIPE_INDEX))
		for k in $ost_indices; do
			((index == k)) && skip=true
		done
		$skip && continue
		ost_indices+=" $index"
		i=$((i+1))
	done
	comma_list $ost_indices
}

# Here we exercise the stripe placement functionality on a file system that
# has formatted the OST with a random index. With the file system the following
# functionality is tested:
#
# 1. Creating a new file with a specific stripe layout.
#
# 2. Modifiy a existing empty file with a specific stripe layout.
#
# 3. Ensure we fail to set the stripe layout of a file that already has one.
#
# 4. If ost-index is defined we need to ensure it is the first entry in the
#    ost index list returned by lfs getstripe.
#
# 5. Lastly ensure this functionality fails with directories.
test_82a() { # LU-4665
	[[ "$MDS1_VERSION" -ge $(version_code 2.6.54) ]] ||
		skip "Need MDS version at least 2.6.54"
	[[ $OSTCOUNT -ge 3 ]] || skip_env "needs >= 3 OSTs"

	stopall

	save_ostindex 3

	# Format OSTs with random sparse indices.
	local i
	local ost_indices

	ost_indices=$(random_ost_indices 3)

	stack_trap "restore_ostindex" EXIT
	echo -e "\nFormat $OSTCOUNT OSTs with sparse indices $ost_indices"
	OST_INDEX_LIST=[$ost_indices] formatall

	# Setup Lustre filesystem.
	start_mgsmds || error "start_mgsmds failed"
	for i in $(seq $OSTCOUNT); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS ||
			error "start ost$i failed"
	done

	# Collect debug information - start of test
	do_nodes $(mdts_nodes) "$LCTL get_param osp.*.prealloc_*_id"

	mount_client $MOUNT || error "mount client $MOUNT failed"
	wait_osts_up

	$LFS df $MOUNT
	check_lfs_df_ret_val $? || error "$LFS df $MOUNT failed"
	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"

	stack_trap "do_nodes $(mdts_nodes) $LCTL get_param osp.*.prealloc_*_id"

	# 1. If the file does not exist, new file will be created
	#    with specified OSTs.
	local file=$DIR/$tdir/$tfile-1
	local cmd="$LFS setstripe -o $ost_indices $file"
	echo -e "\n$cmd"
	eval $cmd || error "$cmd failed"
	check_stripe_count $file $OSTCOUNT
	check_obdidx $file $ost_indices
	dd if=/dev/urandom of=$file count=1 bs=1M > /dev/null 2>&1 ||
		error "write $file failed"

	# 2. If the file already exists and is an empty file, the file
	#    will be attached with specified layout.
	file=$DIR/$tdir/$tfile-2
	mcreate $file || error "mcreate $file failed"
	cmd="$LFS setstripe -o $ost_indices $file"
	echo -e "\n$cmd"
	eval $cmd || error "$cmd failed"
	dd if=/dev/urandom of=$file count=1 bs=1M > /dev/null 2>&1 ||
		error "write $file failed"
	check_stripe_count $file $OSTCOUNT
	check_obdidx $file $ost_indices

	# 3. If the file already has a valid layout attached, the command
	#    should fail with EBUSY.
	echo -e "\n$cmd"
	eval $cmd && error "stripe is already set on $file, $cmd should fail"

	# 4. If [--stripe-index|-i <start_ost_idx>] is used, the index must
	#    be in the OST indices list.
	local start_ost_idx=${ost_indices##*,}
	file=$DIR/$tdir/$tfile-3
	cmd="$LFS setstripe -o $ost_indices -i $start_ost_idx $file"
	echo -e "\n$cmd"
	eval $cmd || error "$cmd failed"
	check_stripe_count $file $OSTCOUNT
	check_obdidx $file $ost_indices
	check_start_ost_idx $file $start_ost_idx

	file=$DIR/$tdir/$tfile-4
	cmd="$LFS setstripe"
	cmd+=" -o $(exclude_items_from_list $ost_indices $start_ost_idx)"
	cmd+=" -i $start_ost_idx $file"
	echo -e "\n$cmd"
	eval $cmd && error "index $start_ost_idx should be in $ost_indices"

	# 5. Specifying OST indices for directory should succeed.
	local dir=$DIR/$tdir/$tdir
	mkdir $dir || error "mkdir $dir failed"
	cmd="$LFS setstripe -o $ost_indices $dir"
	if [ "$MDS1_VERSION" -gt $(version_code 2.11.53) ] &&
		[ "$CLIENT_VERSION" -gt $(version_code 2.11.53) ]; then
		echo -e "\n$cmd"
		eval $cmd || error "unable to specify OST indices on directory"
	else
		echo "need MDS+client version at least 2.11.53"
	fi
}
run_test 82a "specify OSTs for file (succeed) or directory (succeed)"

# Test 82b is run to ensure that if the user supplies a pool with a specific
# stripe layout that it behaves proprerly. It should fail in the case that
# the supplied OST index list points to OSTs not contained in the user
# supplied pool.
test_82b() { # LU-4665
	[[ "$MDS1_VERSION" -ge $(version_code 2.6.54) ]] ||
		skip "Need MDS version at least 2.6.54"
	[[ $OSTCOUNT -ge 4 ]] || skip_env "needs >= 4 OSTs"

	stopall

	save_ostindex 4

	# Format OSTs with random sparse indices.
	local i
	local ost_indices

	ost_indices=$(random_ost_indices 4)

	stack_trap "restore_ostindex" EXIT
	echo -e "\nFormat $OSTCOUNT OSTs with sparse indices $ost_indices"
	OST_INDEX_LIST=[$ost_indices] formatall

	# Setup Lustre filesystem.
	start_mgsmds || error "start_mgsmds failed"
	for i in $(seq $OSTCOUNT); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS ||
			error "start ost$i failed"
	done

	mount_client $MOUNT || error "mount client $MOUNT failed"

	wait_osts_up
	$LFS df $MOUNT
	check_lfs_df_ret_val $? || error "$LFS df $MOUNT failed"
	mkdir $DIR/$tdir || error "mkdir $DIR/$tdir failed"

	# Create a new pool and add OSTs into it.
	local ost_pool=$FSNAME.$TESTNAME
	create_pool $ost_pool || error "create OST pool $ost_pool failed"

	local ost_idx_in_list=${ost_indices##*,}
	local ost_idx_in_pool=$(exclude_items_from_list $ost_indices \
				$ost_idx_in_list)

	local ost_targets="$FSNAME-OST["
	for i in ${ost_idx_in_pool//,/ }; do
		ost_targets=$ost_targets$(printf "%04x," $i)
	done
	ost_targets="${ost_targets%,}]"

	local ost_targets_uuid=$(for i in ${ost_idx_in_pool//,/ }; \
				 do printf "$FSNAME-OST%04x_UUID\n" $i; done |
				 sort -u | tr '\n' ' ')

	local cmd="$LCTL pool_add $ost_pool $ost_targets"
	do_facet mgs $cmd || error "$cmd failed"
	wait_update $HOSTNAME "$LCTL get_param -n lov.$FSNAME-*.pools.$TESTNAME|
			       sort -u | tr '\n' ' ' " "$ost_targets_uuid" ||
					error "wait_update $ost_pool failed"
	wait_update_facet $SINGLEMDS "$LCTL pool_list $ost_pool | wc -l" 4 ||
				error "wait_update pool_list $ost_pool failed"

	# If [--pool|-p <pool_name>] is set with [--ost-list|-o <ost_indices>],
	# then the OSTs must be the members of the pool.
	local file=$DIR/$tdir/$tfile
	cmd="$LFS setstripe -p $ost_pool -o $ost_idx_in_list $file"
	echo -e "\n$cmd"
	eval $cmd && error "OST with index $ost_idx_in_list should be" \
			   "in OST pool $ost_pool"

	# Only select OST $ost_idx_in_list from $ost_pool for file.
	ost_idx_in_list=${ost_idx_in_pool#*,}
	cmd="$LFS setstripe -p $ost_pool -o $ost_idx_in_list $file"
	echo -e "\n$cmd"
	eval $cmd || error "$cmd failed"
	cmd="$LFS getstripe $file"
	echo -e "\n$cmd"
	eval $cmd || error "$cmd failed"
	check_stripe_count $file 2
	check_obdidx $file $ost_idx_in_list
	dd if=/dev/urandom of=$file count=1 bs=1M > /dev/null 2>&1 ||
		error "write $file failed"
}
run_test 82b "specify OSTs for file with --pool and --ost-list options"

test_82c() {
	(( $MDS1_VERSION >= $(version_code 2.16.59.50) )) ||
		skip "MDS needs to be at least 2.16.59.50"

	(( OSTCOUNT >= 4 )) || skip_env "needs >= 4 OSTs"

	stopall

	save_ostindex 4

	# Format OSTs with random sparse indices
	local ost_indices=$(random_ost_indices 4)

	stack_trap "restore_ostindex" EXIT
	echo -e "\nFormat $OSTCOUNT OSTs with sparse indices $ost_indices"
	OST_INDEX_LIST=[$ost_indices] formatall

	# Setup Lustre filesystem
	start_mgsmds || error "start_mgsmds failed"
	for i in $(seq $OSTCOUNT); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS ||
			error "start ost$i failed"
	done

	mount_client $MOUNT || error "mount client $MOUNT failed"

	wait_osts_up

	echo -e "\n$OSTCOUNT OSTs with sparse indices $ost_indices"
	$LFS setstripe -c 4 $DIR/$tfile
	$LFS getstripe $DIR/$tfile
	check_obdidx $DIR/$tfile $ost_indices

	$LFS mirror extend -N -Eeof -c4 $DIR/$tfile
	$LFS getstripe $DIR/$tfile
	local ost_ids=$(comma_list $($LFS getstripe $DIR/$tfile |
		awk '/l_ost_idx/ {print $5}' | xargs))
	[[ $ost_ids = $ost_indices ]] ||
		error "List of OST indices on mirrored $file is $ost_ids, \
		       should be $ost_indices"
}
run_test 82c "specify sparse OSTs for setstripe (should not crash)"

test_83() {
	[[ "$OST1_VERSION" -ge $(version_code 2.6.91) ]] ||
		skip "Need OST version at least 2.6.91"
	if [ "$ost1_FSTYPE" != ldiskfs ]; then
		skip "ldiskfs only test"
	fi

	local dev
	local ostmnt
	local fstype
	local mnt_opts

	dev=$(ostdevname 1)
	ostmnt=$(facet_mntpt ost1)

	# Mount the OST as an ldiskfs filesystem.
	log "mount the OST $dev as a $ost1_FSTYPE filesystem"
	add ost1 $(mkfs_opts ost1 $dev) $FSTYPE_OPT \
		--reformat $dev > /dev/null ||
		error "format ost1 error"

	if ! test -b $dev; then
		mnt_opts=$(csa_add "$OST_MOUNT_FS_OPTS" -o loop)
	fi
	echo "mnt_opts $mnt_opts"
	do_facet ost1 mount -t "$ost1_FSTYPE" $dev \
		$ostmnt $mnt_opts
	# Run llverfs on the mounted ldiskfs filesystem.
	# It is needed to get ENOSPACE.
	log "run llverfs in partial mode on the OST $ost1_FSTYPE $ostmnt"
	do_rpc_nodes $(facet_host ost1) run_llverfs $ostmnt -vpl \
		"no" || error "run_llverfs error on $ost1_FSTYPE"

	# Unmount the OST.
	log "unmount the OST $dev"
	stop ost1

	# Delete file IO_scrub. Later osd_scrub_setup will try to
	# create "IO_scrub" but will get ENOSPACE.
	writeconf_all
	echo "start ost1 service on `facet_active_host ost1`"
	start ost1 `ostdevname 1` $OST_MOUNT_OPTS

	local err
	err=$(do_facet ost1 dmesg | grep "VFS: Busy inodes after unmount of")
	echo "string err $err"
	[ -z "$err" ] || error $err
	reformat_and_config
}
run_test 83 "ENOSPACE on OST doesn't cause message VFS: \
Busy inodes after unmount ..."

test_84() {
	local facet=$SINGLEMDS
	local num=$(echo $facet | tr -d "mds")
	local dev=$(mdsdevname $num)
	local time_min=$(recovery_time_min)
	local recovery_duration
	local completed_clients
	local correct_clients
	local wrap_up=5

	echo "start mds service on $(facet_active_host $facet)"
	start_mds "-o recovery_time_hard=$time_min,recovery_time_soft=$time_min" ||
		error "start MDS failed"

	start_ost || error "start OST0000 failed"
	wait_osc_import_state mds ost1 FULL
	start_ost2 || error "start OST0001 failed"
	wait_osc_import_state mds ost2 FULL

	echo "recovery_time=$time_min, timeout=$TIMEOUT, wrap_up=$wrap_up"

	mount_client $MOUNT1 || error "mount $MOUNT1 failed"
	mount_client $MOUNT2 || error "mount $MOUNT2 failed"
	# make sure new superblock labels are sync'd before disabling writes
	sync_all_data
	sleep 5

	replay_barrier $SINGLEMDS
	createmany -o $DIR1/$tfile-%d 1000

	# We need to catch the end of recovery window to extend it.
	# Skip 5 requests and add delay to request handling.
	#define OBD_FAIL_TGT_REPLAY_DELAY  0x709 | FAIL_SKIP
	do_facet $SINGLEMDS "lctl set_param fail_loc=0x20000709 fail_val=5"

	facet_failover --fsck $SINGLEMDS || error "failover: $?"
	client_up

	echo "recovery status"
	do_facet $SINGLEMDS \
		"$LCTL get_param -n mdt.$FSNAME-MDT0000.recovery_status"

	recovery_duration=$(do_facet $SINGLEMDS \
		"$LCTL get_param -n mdt.$FSNAME-MDT0000.recovery_status" |
		awk '/recovery_duration/ { print $2 }')
	(( $recovery_duration > $time_min + $wrap_up )) &&
		error "recovery_duration > recovery_time_hard + wrap up"
	completed_clients=$(do_facet $SINGLEMDS \
		"$LCTL get_param -n mdt.$FSNAME-MDT0000.recovery_status" |
		awk '/completed_clients/ { print $2 }')

	correct_clients="$MDSCOUNT/$((MDSCOUNT+1))"
	[ "$completed_clients" = "${correct_clients}" ] ||
		error "$completed_clients != $correct_clients"

	do_facet $SINGLEMDS "lctl set_param fail_loc=0"
	umount_client $MOUNT1
	umount_client $MOUNT2

	stop_ost
	stop_ost2
	stop_mds
}
run_test 84 "check recovery_hard_time"

test_85() {
	[[ "$OST1_VERSION" -ge $(version_code 2.7.55) ]] ||
		skip "Need OST version at least 2.7.55"
##define OBD_FAIL_OSD_OST_EA_FID_SET 0x197
	do_facet ost1 "lctl set_param fail_loc=0x197"
	start_ost
	stop_ost
}
run_test 85 "osd_ost init: fail ea_fid_set"

cleanup_86() {
	trap 0

	# ost1 has already registered to the MGS before the reformat.
	# So after reformatting it with option "-G", it could not be
	# mounted to the MGS. Cleanup the system for subsequent tests.
	reformat_and_config
}

test_86() {
	[ "$ost1_FSTYPE" = zfs ] &&
		skip "LU-6442: no such mkfs params for ZFS OSTs"
	[[ "$MDS1_VERSION" -ge $(version_code 2.7.56) ]] ||
		skip "Need server version newer than 2.7.55"

	local NEWSIZE=1024
	local OLDSIZE=$(do_facet ost1 "$DEBUGFS -c -R stats $(ostdevname 1)" |
		awk '/Flex block group size: / { print $NF; exit; }')

	[ "$OLDSIZE" == "$NEWSIZE" ] && skip "$NEWSIZE groups already"

	local opts=" -O flex_bg -G $NEWSIZE"
	opts=$(OST_FS_MKFS_OPTS+="$opts" mkfs_opts ost1 $(ostdevname 1))
	opts+=" --reformat $(ostdevname 1) $(ostvdevname 1)"
	echo "params: $opts"

	trap cleanup_86 EXIT ERR

	stopall
	add ost1 $opts || error "add ost1 failed with new params"

	local FOUNDSIZE=$(do_facet ost1 "$DEBUGFS -c -R stats $(ostdevname 1)" |
		awk '/Flex block group size: / { print $NF; exit; }')

	[[ $FOUNDSIZE == $NEWSIZE ]] ||
		error "Flex block group size: $FOUNDSIZE, expected: $NEWSIZE"

	cleanup_86
}
run_test 86 "Replacing mkfs.lustre -G option"

test_87() { #LU-6544
	[[ "$MDS1_VERSION" -ge $(version_code 2.9.51) ]] ||
		skip "Need MDS version at least 2.9.51"
	[[ "$mds1_FSTYPE" != ldiskfs ]] &&
		skip "ldiskfs only test"
	[[ $OSTCOUNT -gt 59 ]] &&
		skip "Ignore wide striping situation"
	[ -n "$FILESET" ] && skip "Not functional for FILESET set"

	local mdsdev=$(mdsdevname 1)
	local mdsvdev=$(mdsvdevname 1)
	local file=$DIR/$tfile
	local mntpt=$(facet_mntpt $SINGLEMDS)
	local used_xattr_blk=0
	local inode_size=${1:-1024}
	local left_size=0
	local xtest="trusted.test"
	local value
	local orig
	local i
	local stripe_cnt=$(($OSTCOUNT + 2))

	#Please see ldiskfs_make_lustre() for MDT inode size calculation
	if [ $stripe_cnt -gt 16 ]; then
		inode_size=2048
	fi
	left_size=$(expr $inode_size - \
			156 - \
			32 - \
			32 - 40 \* 3 - 32 \* 3 - $stripe_cnt \* 24 - 16 - 3 -  \
			24 - 16 - 3 - \
			24 - 18 - $(expr length $tfile) - 16 - 4)
	if [ $left_size -le 0 ]; then
		echo "No space($left_size) is expected in inode."
		echo "Try 1-byte xattr instead to verify this."
		left_size=1
	else
		echo "Estimate: at most $left_size-byte space left in inode."
	fi

	unload_modules
	reformat

	if ! combined_mgs_mds ; then
		start_mgs
	fi

	add mds1 $(mkfs_opts mds1 ${mdsdev}) --stripe-count-hint=$stripe_cnt \
		--reformat $mdsdev $mdsvdev || error "add mds1 failed"
	start_mdt 1 > /dev/null || error "start mdt1 failed"
	for i in $(seq $OSTCOUNT); do
		start ost$i $(ostdevname $i) $OST_MOUNT_OPTS > /dev/null ||
			error "start ost$i failed"
	done
	mount_client $MOUNT > /dev/null || error "mount client $MOUNT failed"
	check_mount || error "check client $MOUNT failed"

	#set xattr
	$LFS setstripe -E 1M -S 1M -c 1 -E 64M -c 1 -E -1 -c -1 $file ||
		error "Create file with 3 components failed"
	$TRUNCATE $file $((1024*1024*64+1)) || error "truncate file failed"
	i=$($LFS getstripe -I3 -c $file) || error "get 3rd stripe count failed"
	if [ $i -ne $OSTCOUNT ]; then
		left_size=$(expr $left_size + $(expr $OSTCOUNT - $i) \* 24)
		echo -n "Since only $i out $OSTCOUNT OSTs are used, "
		echo -n "the expected left space is changed to "
		echo "$left_size bytes at most."
	fi
	value=$(generate_string $left_size)
	setfattr -n $xtest -v $value $file
	orig=$(get_xattr_value $xtest $file)
	[[ "$orig" != "$value" ]] && error "$xtest changed"

	#Verify if inode has some expected space left
	umount $MOUNT > /dev/null || error "umount $MOUNT failed"
	stop_mdt 1 > /dev/null || error "stop mdt1 failed"
	mount_ldiskfs $SINGLEMDS || error "mount -t ldiskfs $SINGLEMDS failed"

	do_facet $SINGLEMDS ls -sal $mntpt/ROOT/$tfile
	used_xattr_blk=$(do_facet $SINGLEMDS ls -s $mntpt/ROOT/$tfile |
			awk '{ print $1 }')
	[[ $used_xattr_blk -eq 0 ]] &&
		error "Please check MDS inode size calculation: \
		       more than $left_size-byte space left in inode."
	echo "Verified: at most $left_size-byte space left in inode."

	unmount_ldiskfs $SINGLEMDS

	for i in $(seq $OSTCOUNT); do
		stop ost$i -f || error "stop ost$i failed"
	done
}
run_test 87 "check if MDT inode can hold EAs with N stripes properly"

test_88() {
	[ "$mds1_FSTYPE" == zfs ] &&
		skip "LU-6662: no implementation for ZFS"

	load_modules

	add mds1 $(mkfs_opts mds1 $(mdsdevname 1)) \
		--reformat $(mdsdevname 1) || error "add mds1 failed"

	do_facet mds1 "$TUNEFS $(mdsdevname 1) |
		grep -e \".*opts:.*errors=remount-ro.*\"" ||
		error "default mount options is missing"

	add mds1 $(mkfs_opts mds1 $(mdsdevname 1)) \
		--mountfsoptions="user_xattr,errors=panic" \
		--reformat $(mdsdevname 1) || error "add mds1 failed"

	do_facet mds1 "$TUNEFS $(mdsdevname 1) |
		grep -e \".*opts:.*errors=panic.*\"" ||
		error "user can't override default mount options"
}
run_test 88 "check the default mount options can be overridden"

test_89() { # LU-7131
	[[ "$MDS1_VERSION" -ge $(version_code 2.9.54) ]] ||
		skip "Need MDT version at least 2.9.54"

	local key=failover.node
	local val1=192.0.2.254@tcp0 # Reserved IPs, see RFC 5735
	local val2=192.0.2.255@tcp0
	local mdsdev=$(mdsdevname 1)
	local params

	stopall

	if [[ "$mds1_FSTYPE" == zfs ]]; then
		import_zpool mds1 || return ${PIPESTATUS[0]}
	fi

	# Check that parameters are added correctly
	echo "tunefs --param $key=$val1"
	do_facet mds1 "$TUNEFS --param $key=$val1 $mdsdev >/dev/null" ||
		error "tunefs --param $key=$val1 failed"
	params=$(do_facet mds1 $TUNEFS --dryrun $mdsdev) ||
		error "tunefs --dryrun failed"
	params=${params##*Parameters:}
	params=${params%%exiting*}
	[ $(echo $params | tr ' ' '\n' | grep -c $key=$val1) = "1" ] ||
		error "on-disk parameter not added correctly via tunefs"

	# Check that parameters replace existing instances when added
	echo "tunefs --param $key=$val2"
	do_facet mds1 "$TUNEFS --param $key=$val2 $mdsdev >/dev/null" ||
		error "tunefs --param $key=$val2 failed"
	params=$(do_facet mds1 $TUNEFS --dryrun $mdsdev) ||
		error "tunefs --dryrun failed"
	params=${params##*Parameters:}
	params=${params%%exiting*}
	[ $(echo $params | tr ' ' '\n' | grep -c $key=) = "1" ] ||
		error "on-disk parameter not replaced via tunefs"
	[ $(echo $params | tr ' ' '\n' | grep -c $key=$val2) = "1" ] ||
		error "on-disk parameter not replaced correctly via tunefs"

	# Check that a parameter is erased properly
	echo "tunefs --erase-param $key"
	do_facet mds1 "$TUNEFS --erase-param $key $mdsdev >/dev/null" ||
		error "tunefs --erase-param $key failed"
	params=$(do_facet mds1 $TUNEFS --dryrun $mdsdev) ||
		error "tunefs --dryrun failed"
	params=${params##*Parameters:}
	params=${params%%exiting*}
	[ $(echo $params | tr ' ' '\n' | grep -c $key=) = "0" ] ||
		error "on-disk parameter not erased correctly via tunefs"

	# Check that all the parameters are erased
	do_facet mds1 "$TUNEFS --param $key=$val1 $mdsdev >/dev/null" ||
		error "tunefs --param $key=$val1 failed"
	echo "tunefs --erase-params"
	do_facet mds1 "$TUNEFS --erase-params $mdsdev >/dev/null" ||
		error "tunefs --erase-params failed"
	params=$(do_facet mds1 $TUNEFS --dryrun $mdsdev) ||
		error "tunefs --dryrun failed"
	params=${params##*Parameters:}
	params=${params%%exiting*}
	params=$(echo $params | tr ' ' '\n')
	[ -z "$params" ] ||
		error "all on-disk parameters not erased correctly via tunefs $params"

	# Check the order of options --erase-params and --param
	echo "tunefs --param $key=$val1 --erase-params"
	do_facet mds1 \
		"$TUNEFS --param $key=$val1 --erase-params $mdsdev >/dev/null"||
		error "tunefs --param $key=$val1 --erase-params failed"
	params=$(do_facet mds1 $TUNEFS --dryrun $mdsdev) ||
		error "tunefs --dryrun failed"
	params=${params##*Parameters:}
	params=${params%%exiting*}
	[ $(echo $params | tr ' ' '\n') == "$key=$val1" ] ||
		error "on-disk param not added correctly with --erase-params"

	reformat_and_config
}
run_test 89 "check tunefs --param and --erase-param{s} options"

# $1 test directory
# $2 (optional) value of max_mod_rpcs_in_flight to set
check_max_mod_rpcs_in_flight() {
	local dir="$1"
	local mmr="$2"
	local idx
	local facet
	local tmp
	local i

	idx=$(printf "%04x" $($LFS getdirstripe -i $dir))
	facet="mds$((0x$idx + 1))"

	if [ -z "$mmr" ]; then
		# get value of max_mod_rcps_in_flight
		mmr=$($LCTL get_param -n \
			mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight) ||
			error "Unable to get max_mod_rpcs_in_flight"
		echo "max_mod_rcps_in_flight is $mmr"
	else
		# set value of max_mod_rpcs_in_flight
		$LCTL set_param \
		    mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight=$mmr ||
			error "Unable to set max_mod_rpcs_in_flight to $mmr"
		echo "max_mod_rpcs_in_flight set to $mmr"
	fi

	# create mmr+1 files
	echo "creating $((mmr + 1)) files ..."
	umask 0022
	for i in $(seq $((mmr + 1))); do
		touch $dir/file-$i
	done

	### part 1 ###

	# consumes mmr-1 modify RPC slots
	#define OBD_FAIL_MDS_REINT_MULTI_NET     0x159
	# drop requests on MDT so that RPC slots are consumed
	# during all the request resend interval
	do_facet $facet "$LCTL set_param fail_loc=0x159"
	echo "launch $((mmr - 1)) chmod in parallel ..."
	for i in $(seq $((mmr - 1))); do
		chmod 0600 $dir/file-$i &
	done
	sleep 1

	# send one additional modify RPC
	do_facet $facet "$LCTL set_param fail_loc=0"
	echo "launch 1 additional chmod in parallel ..."
	chmod 0600 $dir/file-$mmr &
	sleep 1

	# check this additional modify RPC get a modify RPC slot
	# and succeed its operation
	checkstat -vp 0600 $dir/file-$mmr ||
		error "Unable to send $mmr modify RPCs in parallel"
	wait

	### part 2 ###

	# consumes mmr modify RPC slots
	#define OBD_FAIL_MDS_REINT_MULTI_NET     0x159
	# drop requests on MDT so that RPC slots are consumed
	# during all the request resend interval
	do_facet $facet "$LCTL set_param fail_loc=0x159"
	echo "launch $mmr chmod in parallel ..."
	for i in $(seq $mmr); do
		chmod 0666 $dir/file-$i &
	done
	sleep 1

	# send one additional modify RPC
	do_facet $facet "$LCTL set_param fail_loc=0"
	echo "launch 1 additional chmod in parallel ..."
	chmod 0666 $dir/file-$((mmr + 1)) &
	sleep 1

	# check this additional modify RPC blocked getting a modify RPC slot
	checkstat -vp 0644 $dir/file-$((mmr + 1)) ||
		error "Unexpectedly send $(($mmr + 1)) modify RPCs in parallel"
	wait
}

get_mdt_max_mod_rpcs_in_flight_val() {
	local max_mrif
	local facet="$1"

	# It will be enough to get one value from one MDT
	max_mrif=$(do_facet $facet \
		"$LCTL get_param -n \
		mdt.$FSNAME-MDT*.max_mod_rpcs_in_flight | head -n 1")
	if [[ $max_mrif ]]; then
		echo $max_mrif
	else
		max_mrif=$(do_facet $facet \
		cat /sys/module/mdt/parameters/max_mod_rpcs_per_client)
		echo $max_mrif
	fi
}

set_mdt_max_mod_rpcs_in_flight() {
	local lctl_op
	local max_mrif="$1"
	local facet="$2"

	lctl_op=$($LCTL get_param \
		mdt.*.max_mod_rpcs_in_flight)
	if [[ $lctl_op ]]; then
		do_facet $facet \
			"$LCTL set_param \
			mdt.$FSNAME-MDT*.max_mod_rpcs_in_flight=$max_mrif"
	else
		do_facet $facet \
			"echo $max_mrif > \
			/sys/module/mdt/parameters/max_mod_rpcs_per_client"
		echo "the deprecated max_mod_rpcs_per_client \
				parameter was involved"
	fi
}

test_90a() {
	setup

	[[ $($LCTL get_param mdc.*.import |
	     grep "connect_flags:.*multi_mod_rpc") ]] ||
		skip "Need MDC with 'multi_mod_rpcs' feature"

	# check default value
	$LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	check_max_mod_rpcs_in_flight $DIR/$tdir

	cleanup
}
run_test 90a "check max_mod_rpcs_in_flight is enforced"

test_90b() {
	local idx
	local facet
	local tmp
	local mmrpc

	setup

	[[ $($LCTL get_param mdc.*.import |
	     grep "connect_flags:.*multi_mod_rpc") ]] ||
		skip "Need MDC with 'multi_mod_rpcs' feature"

	### test 1.
	# update max_mod_rpcs_in_flight
	$LFS mkdir -c1 $DIR/${tdir}1 || error "mkdir $DIR/${tdir}1 failed"
	check_max_mod_rpcs_in_flight $DIR/${tdir}1 1

	### test 2.
	# check client is able to send multiple modify RPCs in paralell
	tmp=$($LCTL get_param -n mdc.$FSNAME-MDT*-mdc-*.import |
		grep -c "multi_mod_rpcs")
	if [ "$tmp" -ne $MDSCOUNT ]; then
		cleanup
		skip "Client not able to send multiple modify RPCs in parallel"
	fi

	# update max_mod_rpcs_in_flight
	$LFS mkdir -c1 $DIR/${tdir}2 || error "mkdir $DIR/${tdir}2 failed"
	check_max_mod_rpcs_in_flight $DIR/${tdir}2 5

	### test 3.
	$LFS mkdir -c1 $DIR/${tdir}3 || error "mkdir $DIR/${tdir}3 failed"
	idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/${tdir}3))
	facet="mds$((0x$idx + 1))"

	mmrpc=$(get_mdt_max_mod_rpcs_in_flight_val $facet)
	echo "mdt_max_mod_rpcs_in_flight is $mmrpc"
	# update max_mod_rpcs_in_flight
	umount_client $MOUNT
	set_mdt_max_mod_rpcs_in_flight 16 $facet
	mount_client $MOUNT
	$LCTL set_param mdc.$FSNAME-MDT$idx-mdc-*.max_rpcs_in_flight=17
	check_max_mod_rpcs_in_flight $DIR/${tdir}3 16

	# restore MDT max_mod_rpcs_in_flight initial value
	set_mdt_max_mod_rpcs_in_flight $mmrpc $facet

	rm -rf $DIR/${tdir}?
	cleanup
}
run_test 90b "check max_mod_rpcs_in_flight is enforced after update"

save_params_90c() {
	# get max_rpcs_in_flight value
	mrif_90c=$($LCTL get_param -n \
		   mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight)
	echo "max_rpcs_in_flight is $mrif_90c"

	# get MDC max_mod_rpcs_in_flight value
	mmrif_90c=$($LCTL get_param -n \
		    mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight)
	echo "MDC max_mod_rpcs_in_flight is $mmrif_90c"

	# get MDT max_mod_rpcs_in_flight value
	mmrpc_90c=$(get_mdt_max_mod_rpcs_in_flight_val "mds1")
	echo "mdt_max_mod_rpcs_in_flight is $mmrpc_90c"
}

restore_params_90c() {
	trap 0

	# restore max_rpcs_in_flight value
	do_facet mgs $LCTL set_param -P \
		mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight=$mrif_90c

	# restore max_mod_rpcs_in_flight value
	do_facet mgs $LCTL set_param -P \
		mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$mmrif_90c

	# restore MDT max_mod_rpcs_in_flight value
	set_mdt_max_mod_rpcs_in_flight $mmrpc_90c "mds1"
}

test_90c() {
	local tmp

	setup

	[[ $($LCTL get_param mdc.*.import |
	     grep "connect_flags:.*multi_mod_rpc") ]] ||
		skip "Need MDC with 'multi_mod_rpcs' feature"

	# check client is able to send multiple modify RPCs in paralell
	tmp=$($LCTL get_param -n mdc.$FSNAME-MDT*-mdc-*.import |
		grep -c "multi_mod_rpcs")
	if [ "$tmp" -ne $MDSCOUNT ]; then
		cleanup
		skip "Client not able to send multiple modify RPCs in parallel"
	fi

	save_params_90c
	stack_trap restore_params_90c

	# testcase 1
	# attempt to set max_mod_rpcs_in_flight to max_rpcs_in_flight value
	# prerequisite: set MDT max_mod_rpcs_in_flight to
	# max_rpcs_in_flight value
	set_mdt_max_mod_rpcs_in_flight $mrif_90c "mds1"

	# if max_mod_rpcs_in_flight is set to be equal to or larger than
	# max_rpcs_in_flight, then max_rpcs_in_flight will be increased
	if [[ "$CLIENT_VERSION" -ge $(version_code 2.13.53) ]]; then
		$LCTL set_param \
		mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$mrif_90c ||
			error "set max_mod_rpcs_in_flight to $mrif_90c failed"

		local new_mrif=$($LCTL get_param -n \
				 mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight)
		((new_mrif == mrif_90c + 1)) ||
			error "max_rpcs_in_flight was not increased"
	fi

	umount_client $MOUNT
	set_mdt_max_mod_rpcs_in_flight $mmrpc_90c "mds1"
	mount_client $MOUNT

	# testcase 2
	# attempt to set max_mod_rpcs_in_flight to MDT max_mod_rpcs_in_flight+1
	# prerequisite: set max_rpcs_in_flight to MDT max_mod_rpcs_in_flight+2
	$LCTL set_param \
		mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight=$((mmrpc_90c + 2))

	$LCTL set_param \
	mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$((mmrpc_90c + 1)) &&
	error "set max_mod_rpcs_in_flight to $((mmrpc_90c + 1)) should fail"

	# testcase 3
	# attempt to set max_mod_rpcs_in_flight permanently
	do_facet mgs $LCTL set_param -P \
		mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight=$mrif_90c

	do_facet mgs $LCTL set_param -P \
		mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$mrif_90c

	remount_client $MOUNT

	wait_update_facet --verbose client "$LCTL get_param -n \
		mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight" \
		"$((mrif_90c + 1))" ||
		error "expected '$((mrif_90c + 1))' for max_rpcs_in_flight"

	wait_update_facet --verbose client "$LCTL get_param -n \
		mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight" \
		"$mrif_90c" ||
		error "expected '$mrif_90c' for max_mod_rpcs_in_flight"

	restore_params_90c
	cleanup
}
run_test 90c "check max_mod_rpcs_in_flight update limits"

test_90d() {
	local idx
	local facet
	local mmr
	local i
	local pid

	setup

	[[ $($LCTL get_param mdc.*.import |
	     grep "connect_flags:.*multi_mod_rpc") ]] ||
		skip "Need MDC with 'multi_mod_rpcs' feature"

	$LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
	idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
	facet="mds$((0x$idx + 1))"

	# check client version supports multislots
	tmp=$($LCTL get_param -N \
		mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
	if [ -z "$tmp" ]; then
		cleanup
		skip "Client does not support multiple modify RPCs in flight"
	fi

	# get current value of max_mod_rcps_in_flight
	mmr=$($LCTL get_param -n \
		mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
	echo "max_mod_rcps_in_flight is $mmr"

	# create mmr files
	echo "creating $mmr files ..."
	umask 0022
	for i in $(seq $mmr); do
		touch $DIR/$tdir/file-$i
	done

	# prepare for close RPC
	multiop_bg_pause $DIR/$tdir/file-close O_c
	pid=$!

	# consumes mmr modify RPC slots
	#define OBD_FAIL_MDS_REINT_MULTI_NET     0x159
	# drop requests on MDT so that RPC slots are consumed
	# during all the request resend interval
	do_facet $facet "$LCTL set_param fail_loc=0x159"
	echo "launch $mmr chmod in parallel ..."
	for i in $(seq $mmr); do
		chmod 0600 $DIR/$tdir/file-$i &
	done

	# send one additional close RPC
	do_facet $facet "$LCTL set_param fail_loc=0"
	echo "launch 1 additional close in parallel ..."
	kill -USR1 $pid
	cancel_lru_locks mdc
	sleep 1

	# check this additional close RPC get a modify RPC slot
	# and multiop process completed
	[ -d /proc/$pid ] &&
		error "Unable to send the additional close RPC in parallel"
	wait
	rm -rf $DIR/$tdir
	cleanup
}
run_test 90d "check one close RPC is allowed above max_mod_rpcs_in_flight"

check_uuid_on_ost() {
	local nid=$1
	do_facet ost1 "$LCTL get_param obdfilter.${FSNAME}*.exports.'$nid'.uuid"
}

check_uuid_on_mdt() {
	local nid=$1
	do_facet $SINGLEMDS "$LCTL get_param mdt.${mds1_svc}*.exports.'$nid'.uuid"
}

test_91() {
	local uuid
	local nid
	local found

	[[ "$OST1_VERSION" -ge $(version_code 2.7.63) ]] ||
		skip "Need OST version at least 2.7.63"
	[[ "$MDS1_VERSION" -ge $(version_code 2.7.63) ]] ||
		skip "Need MDT version at least 2.7.63"

	start_mds || error "MDS start failed"
	start_ost || error "unable to start OST"
	mount_client $MOUNT || error "client start failed"
	check_mount || error "check_mount failed"

	if remote_mds; then
		nid=$($LCTL list_nids | head -1 | sed  "s/\./\\\./g")
	else
		nid="0@lo"
	fi
	uuid=$(get_client_uuid $MOUNT)

	echo "list nids on mdt:"
	do_facet $SINGLEMDS "$LCTL list_param mdt.${FSNAME}*.exports.*"
	echo "uuid from $nid:"
	do_facet $SINGLEMDS "$LCTL get_param mdt.${FSNAME}*.exports.'$nid'.uuid"

	found=$(check_uuid_on_mdt $nid | grep $uuid)
	[ -z "$found" ] && error "can't find $uuid $nid on MDT"
	found=$(check_uuid_on_ost $nid | grep $uuid)
	[ -z "$found" ] && error "can't find $uuid $nid on OST"

	# umount the client so it won't reconnect
	manual_umount_client --force || error "failed to umount $?"
	# shouldn't disappear on MDS after forced umount
	found=$(check_uuid_on_mdt $nid | grep $uuid)
	[ -z "$found" ] && error "can't find $uuid $nid"

	echo "evict $nid"
	do_facet $SINGLEMDS \
		"$LCTL set_param -n mdt.${mds1_svc}.evict_client nid:$nid"
	sleep 1 # eviction above is async, give it some time to proceed

	found=$(check_uuid_on_mdt $nid | grep $uuid)
	[ -n "$found" ] && error "found $uuid $nid on MDT"
	found=$(check_uuid_on_ost $nid | grep $uuid)
	[ -n "$found" ] && error "found $uuid $nid on OST"

	# check it didn't reconnect (being umounted)
	sleep $((TIMEOUT+1))
	found=$(check_uuid_on_mdt $nid | grep $uuid)
	[ -n "$found" ] && error "found $uuid $nid on MDT"
	found=$(check_uuid_on_ost $nid | grep $uuid)
	[ -n "$found" ] && error "found $uuid $nid on OST"

	cleanup
}
run_test 91 "evict-by-nid support"

generate_ldev_conf() {
	# generate an ldev.conf file
	local ldevconfpath=$1
	local fstype=
	local fsldevformat=""
	rm -f $ldevconfpath

	local facets="mgs,$(get_facets OST),$(get_facets MDS)"
	for facet in ${facets//,/ }; do
		fsldevformat=""
		fstype=$(facet_fstype $facet)
		[ "$fstype" = zfs ] && fsldevformat="$fstype:"
		local host=$(facet_host $facet)
		local fo="-"
		local varfo=${facet}failover_HOST
		if [ $facet == mgs ] && combined_mgs_mds; then
			varfo=mds1failover_HOST
		fi
		[ -n "${!varfo}" ] && fo=${!varfo}
		local type=$(echo $facet | tr -d "[:digit:]" | \
			tr "[:lower:]" "[:upper:]" | sed s/MDS/MDT/ )
		local num=1
		[ ${facet} == mgs ] ||
			num=$(facet_number $facet)
		printf "%s\t%s\t%s-%s%04x\t%s%s\n" \
			${host} \
			${fo} \
			$FSNAME \
			$type \
			$(( num - 1 )) \
			$fsldevformat \
			$(facet_device $facet) >> $ldevconfpath
	done

	echo "----- $ldevconfpath -----"
	cat $ldevconfpath
	echo "--- END $ldevconfpath ---"

}

generate_nids() {
	# generate a nids file (mapping between hostname to nid)
	# looks like we only have the MGS nid available to us
	# so just echo that to a file
	local nidspath=$1
	echo -e "${mgs_HOST}\t${MGSNID}" > $nidspath

	echo "----- $nidspath -----"
	cat $nidspath
	echo "--- END $nidspath ---"
}

compare_ldev_output() {
	local ldev_output=$1
	local expected_output=$2

	sort $expected_output -o $expected_output
	sort $ldev_output -o $ldev_output

	echo "-- START OF LDEV OUTPUT --"
	cat $ldev_output
	echo "--- END OF LDEV OUTPUT ---"

	echo "-- START OF EXPECTED OUTPUT --"
	cat $expected_output
	echo "--- END OF EXPECTED OUTPUT ---"

	diff $expected_output $ldev_output
	return $?
}

test_92() {
	if [ -z "$LDEV" ]; then
		error "ldev is missing!"
	fi

	local LDEVCONFPATH=$TMP/ldev.conf
	local NIDSPATH=$TMP/nids

	echo "Host is $(hostname)"

	generate_ldev_conf $LDEVCONFPATH
	generate_nids $NIDSPATH

	# echo the mgs nid and compare it to environment variable MGSNID
	local facets="$(get_facets OST),$(get_facets MDS),mgs"
	for facet in ${facets//,/ }; do
		local host=$(facet_host $facet)
		local output=$($LDEV -c $LDEVCONFPATH -H $host -n $NIDSPATH echo %m)

		echo "-- START OF LDEV OUTPUT --"
		echo -e "$output"
		echo "--- END OF LDEV OUTPUT ---"

		[ -z "$output" ] &&
			error "ldev failed to execute!"

		# need to process multiple lines because of
		# several targets on host
		echo -e $output | awk '{ print $2 }' | while read -r line ; do
			[ "$line" = "$MGSNID" ] ||
				error "ldev failed mgs nid '$line', \
					expected '$MGSNID'"
		done
	done
	rm -f $LDEVCONFPATH $NIDSPATH
}
run_test 92 "ldev returns MGS NID correctly in command substitution"

test_93() {
	[ $MDSCOUNT -lt 3 ] && skip "needs >= 3 MDTs"

	reformat
	#start mgs or mgs/mdt0
	if ! combined_mgs_mds ; then
		start_mgs
		start_mdt 1
	else
		start_mdt 1
	fi

	start_ost || error "OST0 start fail"

	#define OBD_FAIL_MGS_WRITE_TARGET_DELAY	 0x90e
	do_facet mgs "$LCTL set_param fail_val=10 fail_loc=0x8000090e"
	for num in $(seq 2 $MDSCOUNT); do
		start_mdt $num &
	done

	mount_client $MOUNT || error "mount client fails"
	wait_osc_import_state mds ost FULL
	wait_osc_import_ready client ost
	check_mount || error "check_mount failed"

	cleanup || error "cleanup failed with $?"
}
run_test 93 "register mulitple MDT at the same time"

test_94() {
	if [ -z "$LDEV" ]; then
		error "ldev is missing!"
	fi

	local LDEVCONFPATH=$TMP/ldev.conf
	local NIDSPATH=$TMP/nids

	generate_ldev_conf $LDEVCONFPATH
	generate_nids $NIDSPATH

	local LDEV_OUTPUT=$TMP/ldev-output.txt
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME > $LDEV_OUTPUT

	# ldev failed, error
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT
		error "ldev failed to execute!"
	fi

	# expected output
	local EXPECTED_OUTPUT=$TMP/ldev-expected.txt

	printf "%s-MGS0000\n" $FSNAME > $EXPECTED_OUTPUT

	for num in $(seq $MDSCOUNT); do
		printf "%s-MDT%04x\n" $FSNAME $((num - 1)) >> $EXPECTED_OUTPUT
	done

	for num in $(seq $OSTCOUNT); do
		printf "%s-OST%04x\n" $FSNAME $((num - 1)) >> $EXPECTED_OUTPUT
	done

	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
		error "ldev failed to produce the correct hostlist!"
	fi

	rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
}
run_test 94 "ldev outputs correct labels for file system name query"

test_95() {
	if [ -z "$LDEV" ]; then
		error "ldev is missing!"
	fi

	local LDEVCONFPATH=$TMP/ldev.conf
	local NIDSPATH=$TMP/nids

	generate_ldev_conf $LDEVCONFPATH
	generate_nids $NIDSPATH

	# SUCCESS CASES
	# file sys filter
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME &>/dev/null
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -F failed!"
	fi

	# local filter
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -l  &>/dev/null
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -l failed!"
	fi

	# foreign filter
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -f &>/dev/null
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -f failed!"
	fi

	# all filter
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a &>/dev/null
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -a failed!"
	fi

	# FAILURE CASES
	# all & file sys
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -F $FSNAME &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -a and -F incorrectly succeeded"
	fi

	# all & foreign
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -f &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -a and -f incorrectly succeeded"
	fi

	# all & local
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -a -l &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -a and -l incorrectly succeeded"
	fi

	# foreign & local
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -f -l &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -f and -l incorrectly succeeded"
	fi

	# file sys & local
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -l &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -F and -l incorrectly succeeded"
	fi

	# file sys & foreign
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -f &>/dev/null
	if [ $? -eq 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH
		error "ldev label filtering w/ -F and -f incorrectly succeeded"
	fi

	rm $LDEVCONFPATH $NIDSPATH
}
run_test 95 "ldev should only allow one label filter"

test_96() {
	if [ -z "$LDEV" ]; then
		error "ldev is missing!"
	fi

	local LDEVCONFPATH=$TMP/ldev.conf
	local NIDSPATH=$TMP/nids

	generate_ldev_conf $LDEVCONFPATH
	generate_nids $NIDSPATH

	local LDEV_OUTPUT=$TMP/ldev-output.txt
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -H $mgs_HOST \
		echo %H-%b | \
		awk '{print $2}' > $LDEV_OUTPUT

	# ldev failed, error
	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT
		error "ldev failed to execute!"
	fi

	# expected output
	local EXPECTED_OUTPUT=$TMP/ldev-expected-output.txt

	echo "$mgs_HOST-$(facet_fstype mgs)" > $EXPECTED_OUTPUT

	local facets="$(get_facets OST),$(get_facets MDS)"
	for facet in ${facets//,/ }; do
		local host=$(facet_host $facet)
		[ "$mgs_HOST" == "$host" ] &&
			echo "$host-$(facet_fstype $facet)" \
			>> $EXPECTED_OUTPUT
	done

	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
		error "ldev failed to produce the correct output!"
	fi

	rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
}
run_test 96 "ldev returns hostname and backend fs correctly in command sub"

test_97() {
	if [ -z "$LDEV" ]; then
		error "ldev is missing!"
	fi

	local LDEVCONFPATH=$TMP/ldev.conf
	local NIDSPATH=$TMP/nids

	generate_ldev_conf $LDEVCONFPATH
	generate_nids $NIDSPATH

	local LDEV_OUTPUT=$TMP/ldev-output.txt
	local EXPECTED_OUTPUT=$TMP/ldev-expected-output.txt

	echo -e "\nMDT role"
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -R mdt > $LDEV_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT
		error "ldev failed to execute for mdt role!"
	fi

	for num in $(seq $MDSCOUNT); do
		printf "%s-MDT%04x\n" $FSNAME $((num - 1)) >> $EXPECTED_OUTPUT
	done

	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
		error "ldev failed to produce the correct output for mdt role!"
	fi

	echo -e "\nOST role"
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -R ost > $LDEV_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT $EXPECTED_OUTPUT
		error "ldev failed to execute for ost role!"
	fi

	rm $EXPECTED_OUTPUT
	for num in $(seq $OSTCOUNT); do
		printf "%s-OST%04x\n" $FSNAME $((num - 1)) >> $EXPECTED_OUTPUT
	done

	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
		error "ldev failed to produce the correct output for ost role!"
	fi

	echo -e "\nMGS role"
	$LDEV -c $LDEVCONFPATH -n $NIDSPATH -F $FSNAME -R mgs > $LDEV_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $LDEV_OUTPUT $EXPECTED_OUTPUT
		error "ldev failed to execute for mgs role!"
	fi

	printf "%s-MGS0000\n" $FSNAME > $EXPECTED_OUTPUT

	compare_ldev_output $LDEV_OUTPUT $EXPECTED_OUTPUT

	if [ $? -ne 0 ]; then
		rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
		error "ldev failed to produce the correct output for mgs role!"
	fi

	rm $LDEVCONFPATH $NIDSPATH $EXPECTED_OUTPUT $LDEV_OUTPUT
}
run_test 97 "ldev returns correct ouput when querying based on role"

test_98()
{
	local mountopt

	setup
	check_mount || error "mount failed"
	mountopt="user_xattr"
	for ((x = 1; x <= PAGE_SIZE/10; x++)); do
		mountopt="$mountopt,user_xattr"
	done
	mount.lustre -o remount,$mountopt -v $MGSNID:/$FSNAME $MOUNT 2>&1 |
		tee $TMP/$tfile.out
	grep "too long" $TMP/$tfile.out ||
		error "Buffer overflow check failed"

	cleanup || error "cleanup failed"
}
run_test 98 "Buffer-overflow check while parsing mount_opts"

test_99()
{
	[[ "$ost1_FSTYPE" != ldiskfs ]] &&
		skip "ldiskfs only test"
	[[ "$OST1_VERSION" -ge $(version_code 2.8.57) ]] ||
		skip "Need OST version at least 2.8.57"

	local ost_opts="$(mkfs_opts ost1 $(ostdevname 1)) \
		--reformat $(ostdevname 1) $(ostvdevname 1)"
	do_facet ost1 $DEBUGFS -c -R stats `ostdevname 1` | grep "meta_bg" &&
		skip "meta_bg already set"

	local opts=ost_opts
	if [[ ${!opts} != *mkfsoptions* ]]; then
		eval opts=\"${!opts} \
		--mkfsoptions='\\\"-O ^resize_inode,meta_bg\\\"'\"
	else
		local val=${!opts//--mkfsoptions=\\\"/ \
		--mkfsoptions=\\\"-O ^resize_inode,meta_bg }
		eval opts='${val}'
	fi

	echo "params: $opts"

	load_modules
	add ost1 $opts || error "add ost1 failed with new params"

	do_facet ost1 $DEBUGFS -c -R stats `ostdevname 1` | grep "meta_bg" ||
		error "meta_bg is not set"
}
run_test 99 "Adding meta_bg option"

test_100() {
	reformat

	start_mgsmds || error "MDS start failed"
	start_ost || error "unable to start OST"
	mount_client $MOUNT || error "client start failed"
	check_mount || error "check_mount failed"

	# Desired output
	# MGS:
	#     0@lo
	# $FSNAME-MDT0000:
	#     0@lo
	# $FSNAME-OST0000:
	#     0@lo
	do_facet mgs 'lshowmount -v' | awk 'BEGIN {NR == 0; rc=1} /MGS:/ {rc=0}
		END {exit rc}' || error "lshowmount have no output MGS"

	do_facet mds1 'lshowmount -v' | awk 'BEGIN {NR == 2; rc=1} /-MDT0000:/
		{rc=0} END {exit rc}' || error "lshowmount have no output MDT0"

	do_facet ost1 'lshowmount -v' | awk 'BEGIN {NR == 4; rc=1} /-OST0000:/
		{rc=0} END {exit rc}' || error "lshowmount have no output OST0"

	cleanup || error "cleanup failed with $?"
}
run_test 100 "check lshowmount lists MGS, MDT, OST and 0@lo"

test_101a() {
	local createmany_pid
	local dev=$FSNAME-OST0000-osc-MDT0000
	setup

	mkdir_on_mdt0 $DIR1/$tdir
	do_nodes $(osts_nodes) \
		$LCTL set_param seq.*OST*-super.width=$DATA_SEQ_MAX_WIDTH
	createmany -o $DIR1/$tdir/$tfile-%d 50000 &
	createmany_pid=$!
	# MDT->OST reconnection causes MDT<->OST last_id synchornisation
	# via osp_precreate_cleanup_orphans.
	for ((i = 0; i < 100; i++)); do
		for ((k = 0; k < 10; k++)); do
			do_facet $SINGLEMDS "$LCTL --device $dev deactivate;" \
					    "$LCTL --device $dev activate"
		done

		ls -asl $MOUNT | grep '???' &&
			{ kill -9 $createmany_pid &>/dev/null;
			  error "File has no object on OST"; }

		kill -s 0 $createmany_pid || break
	done
	wait $createmany_pid

	unlinkmany $DIR1/$tdir/$tfile-%d 50000
	cleanup
}
run_test 101a "Race MDT->OST reconnection with create"

test_101b () {
	local dev=$FSNAME-OST0000-osc-MDT0000
	local dir=$DIR1/$tdir
	setup

	mkdir_on_mdt0 $dir
	$LFS setstripe -c 1 -i 0 $dir
	do_facet $SINGLEMDS "$LCTL --device $dev deactivate;"
#define OBD_FAIL_OSP_CON_EVENT_DELAY 0x2107
	do_facet mds1 "$LCTL set_param fail_loc=0x80002107 fail_val=20"
	do_facet $SINGLEMDS "$LCTL --device $dev activate;"
	stop_ost
	sleep 25
	start_ost

	wait_osc_import_ready client ost1
	touch $dir/$tfile || error "Can't create file"

	cleanup
}
run_test 101b "Race events DISCONNECT and ACTIVE in osp"

test_102() {
	[[ "$MDS1_VERSION" -gt $(version_code 2.9.53) ]] ||
		skip "Need server version greater than 2.9.53"
	[[ "$(mdsdevname 1)" != "$(mgsdevname)" ]] &&
		[[ "$(facet_host mds1)" == "$(facet_host mgs)" ]] &&
		skip "MGS must be on different node or combined"

	cleanup || error "cleanup failed with $?"

	local mds1dev=$(mdsdevname 1)
	local mds1mnt=$(facet_mntpt mds1)
	local mds1opts=$MDS_MOUNT_OPTS

	if [ "$mds1_FSTYPE" == ldiskfs ] &&
	   ! do_facet mds1 test -b $mds1dev; then
		mds1opts=$(csa_add "$mds1opts" -o loop)
	fi
	if [[ "$mds1_FSTYPE" == zfs ]]; then
		import_zpool mds1 || return ${PIPESTATUS[0]}
	fi

	# unload all and only load libcfs to allow fail_loc setting
	do_facet mds1 $LUSTRE_RMMOD || error "unable to unload modules"
	do_rpc_nodes $(facet_active_host mds1) load_module ../libcfs/libcfs/libcfs
	do_facet mds1 lsmod | grep libcfs || error "libcfs not loaded"

	#define OBD_FAIL_OBDCLASS_MODULE_LOAD    0x60a
	do_facet mds1 "$LCTL set_param fail_loc=0x8000060a"

	do_facet mds1 $MOUNT_CMD $mds1dev $mds1mnt $mds1opts &&
		error "mdt start must fail" || log "mount failed as expected"
	do_facet mds1 lsmod | grep obdclass && error "obdclass must not load" ||
		log "obdclass not loaded as expected"

	do_facet mds1 "$LCTL set_param fail_loc=0x0"

	do_rpc_nodes $(facet_active_host mds1) load_modules
	do_facet mds1 $MOUNT_CMD $mds1dev $mds1mnt $mds1opts &&
		log "mds1 mounted properly" ||
		error "mdt start must not fail"

	cleanup || error "cleanup failed with $?"
}
run_test 102 "obdclass module cleanup upon error"

test_renamefs() {
	local newname=$1

	echo "rename $FSNAME to $newname"

	if ! combined_mgs_mds ; then
		local dev=$(mgsdevname)

		do_facet mgs \
			"$TUNEFS --fsname=$newname --rename=$FSNAME -v $dev" ||
				error "(7) Fail to rename MGS"
		if [ "$(facet_fstype mgs)" = "zfs" ]; then
			reimport_zpool mgs $newname-mgs
		fi
	fi

	for num in $(seq $MDSCOUNT); do
		local dev=$(mdsdevname $num)

		do_facet mds${num} \
			"$TUNEFS --fsname=$newname --rename=$FSNAME -v $dev" ||
				error "(8) Fail to rename MDT $num"
		if [ "$(facet_fstype mds${num})" = "zfs" ]; then
			reimport_zpool mds${num} $newname-mdt${num}
		fi
	done

	for num in $(seq $OSTCOUNT); do
		local dev=$(ostdevname $num)

		do_facet ost${num} \
			"$TUNEFS --fsname=$newname --rename=$FSNAME -v $dev" ||
				error "(9) Fail to rename OST $num"
		if [ "$(facet_fstype ost${num})" = "zfs" ]; then
			reimport_zpool ost${num} $newname-ost${num}
		fi
	done
}

test_103_set_pool() {
	local pname=$1
	local ost_x=$2

	do_facet mgs $LCTL pool_add $FSNAME.$pname ${FSNAME}-$ost_x ||
		error "Fail to add $ost_x to $FSNAME.$pname"
	wait_update $HOSTNAME \
		"lctl get_param -n lov.$FSNAME-clilov-*.pools.$pname |
		 grep $ost_x" "$FSNAME-${ost_x}_UUID" ||
		error "$ost_x is NOT in pool $FSNAME.$pname"
}

test_103_check_pool() {
	local save_fsname=$1
	local errno=$2

	stat $DIR/$tdir/test-framework.sh ||
		error "($errno) Fail to stat"
	do_facet mgs $LCTL pool_list $FSNAME.pool1 ||
		error "($errno) Fail to list $FSNAME.pool1"
	do_facet mgs $LCTL pool_list $FSNAME.$save_fsname ||
		error "($errno) Fail to list $FSNAME.$save_fsname"
	do_facet mgs $LCTL pool_list $FSNAME.$save_fsname |
		grep ${FSNAME}-OST0000 ||
		error "($errno) List $FSNAME.$save_fsname is invalid"

	local pname=$($LFS getstripe --pool $DIR/$tdir/d0)
	[ "$pname" = "$save_fsname" ] ||
		error "($errno) Unexpected pool name $pname"
}

test_103() {
	check_mount_and_prep
	rm -rf $DIR/$tdir
	mkdir $DIR/$tdir || error "(1) Fail to mkdir $DIR/$tdir"
	cp $LUSTRE/tests/test-framework.sh $DIR/$tdir ||
		error "(2) Fail to copy test-framework.sh"

	do_facet mgs $LCTL pool_new $FSNAME.pool1 ||
		error "(3) Fail to create $FSNAME.pool1"
	# name the pool name as the fsname
	do_facet mgs $LCTL pool_new $FSNAME.$FSNAME ||
		error "(4) Fail to create $FSNAME.$FSNAME"

	test_103_set_pool $FSNAME OST0000

	$LFS setstripe -p $FSNAME $DIR/$tdir/d0 ||
		error "(6) Fail to setstripe on $DIR/$tdir/d0"

	KEEP_ZPOOL=true
	stopall

	test_renamefs mylustre

	local save_fsname=$FSNAME
	FSNAME="mylustre"
	setupall

	test_103_check_pool $save_fsname 7

	if [ $OSTCOUNT -ge 2 ]; then
		test_103_set_pool $save_fsname OST0001
	fi

	$LFS setstripe -p $save_fsname $DIR/$tdir/f0 ||
		error "(16) Fail to setstripe on $DIR/$tdir/f0"

	stopall

	test_renamefs tfs

	FSNAME="tfs"
	setupall

	test_103_check_pool $save_fsname 17

	stopall

	test_renamefs $save_fsname

	FSNAME=$save_fsname
	setupall
	KEEP_ZPOOL=false
}
run_test 103 "rename filesystem name"

test_104a() { # LU-6952
	local mds_mountopts=$MDS_MOUNT_OPTS
	local ost_mountopts=$OST_MOUNT_OPTS
	local mds_mountfsopts=$MDS_MOUNT_FS_OPTS
	local lctl_ver=$(do_facet $SINGLEMDS $LCTL --version |
			awk '{ print $2 }')

	[[ $(version_code $lctl_ver) -lt $(version_code 2.9.55) ]] &&
		skip "this test needs utils above 2.9.55"

	# specify "acl" in mount options used by mkfs.lustre
	if [ -z "$MDS_MOUNT_FS_OPTS" ]; then
		MDS_MOUNT_FS_OPTS="acl,user_xattr"
	else

		MDS_MOUNT_FS_OPTS="${MDS_MOUNT_FS_OPTS},acl,user_xattr"
	fi

	echo "mountfsopt: $MDS_MOUNT_FS_OPTS"

	#reformat/remount the MDT to apply the MDT_MOUNT_FS_OPT options
	formatall
	if ! combined_mgs_mds ; then
		start_mgs
	fi

	if [ -z "$MDS_MOUNT_OPTS" ]; then
		MDS_MOUNT_OPTS="-o noacl"
	else
		MDS_MOUNT_OPTS="${MDS_MOUNT_OPTS},noacl"
	fi

	for num in $(seq $MDSCOUNT); do
		start mds$num $(mdsdevname $num) $MDS_MOUNT_OPTS ||
			error "Failed to start MDS"
	done

	for num in $(seq $OSTCOUNT); do
		start ost$num $(ostdevname $num) $OST_MOUNT_OPTS ||
			error "Failed to start OST"
	done

	mount_client $MOUNT
	setfacl -m "d:$RUNAS_ID:rwx" $MOUNT &&
		error "ACL is applied when FS is mounted with noacl."

	MDS_MOUNT_OPTS=$mds_mountopts
	OST_MOUNT_OPTS=$ost_mountopts
	MDS_MOUNT_FS_OPTS=$mds_mountfsopts
}
run_test 104a "Make sure user defined options are reflected in mount"

test_104b() { # LU-12859
	mount_client $MOUNT3 flock,localflock
	stack_trap "umount_client $MOUNT3" EXIT
	mount | grep "$MOUNT3 .*,flock" && error "flock is still set"
	mount | grep "$MOUNT3 .*,localflock" || error "localflock is not set"
	umount_client $MOUNT3
	mount_client $MOUNT3 localflock,flock
	mount | grep "$MOUNT3 .*,localflock" && error "localflock is still set"
	mount | grep "$MOUNT3 .*,flock" || error "flock is not set"
	umount_client $MOUNT3
	mount_client $MOUNT3 localflock,flock,noflock
	flock_is_enabled $MOUNT3 && error "some flock is still enabled" || true
}
run_test 104b "Mount uses last flock argument"

error_and_umount() {
	umount $TMP/$tdir
	rmdir $TMP/$tdir
	error $*
}

test_105() {
	cleanup -f
	reformat
	setup_noconfig
	mkdir -p $TMP/$tdir
	mount --bind $DIR $TMP/$tdir || error "mount bind mnt pt failed"
	rm -f $TMP/$tdir/$tfile
	rm -f $TMP/$tdir/${tfile}1

	# Files should not be created in ro bind mount point
	# remounting from rw to ro
	mount -o remount,ro $TMP/$tdir ||
		error_and_umount "readonly remount of bind mnt pt failed"
	touch $TMP/$tdir/$tfile &&
		error_and_umount "touch succeeds on ro bind mnt pt"
	[ -e $TMP/$tdir/$tfile ] &&
		error_and_umount "file created on ro bind mnt pt"

	# Files should be created in rw bind mount point
	# remounting from ro to rw
	mount -o remount,rw $TMP/$tdir ||
		error_and_umount "read-write remount of bind mnt pt failed"
	touch $TMP/$tdir/${tfile}1 ||
		error_and_umount "touch fails on rw bind mnt pt"
	[ -e $TMP/$tdir/${tfile}1 ] ||
		error_and_umount "file not created on rw bind mnt pt"
	umount $TMP/$tdir || error "umount of bind mnt pt failed"
	rmdir $TMP/$tdir
	cleanup || error "cleanup failed with $?"
}
run_test 105 "check file creation for ro and rw bind mnt pt"

test_106() {
	local repeat=5
	local creates=64768	# one full plain llog

	# ensure there are enough inodes in the filesystem
	(( OSTSIZE < (creates + 1024) * 16)) && OSTSIZE=$(((creates + 1024) * 16))
	reformat
	setup_noconfig
	lfs df -i
	mkdir -p $DIR/$tdir || error "create $tdir failed"
	do_nodes $(osts_nodes) \
		$LCTL set_param seq.*OST*-super.width=$DATA_SEQ_MAX_WIDTH
	lfs setstripe -c 1 -i 0 $DIR/$tdir
#define OBD_FAIL_CAT_RECORDS                        0x1312
	do_facet mds1 $LCTL set_param fail_loc=0x1312 fail_val=$repeat

	for ((i = 1; i <= $repeat; i++)); do
		createmany -o $DIR/$tdir/f- $creates || lfs df -i
		createmany -u $DIR/$tdir/f- $creates
		wait_delete_completed $((TIMEOUT * 7))
	done
#ASSERTION osp_sync_thread() ( thread->t_flags != SVC_RUNNING ) failed
#shows that osp code is buggy
	do_facet mds1 $LCTL set_param fail_loc=0 fail_val=0

	cleanup
}
run_test 106 "check osp llog processing when catalog is wrapped"

test_107() {
	[[ "$MDS1_VERSION" -ge $(version_code 2.10.50) ]] ||
		skip "Need MDS version > 2.10.50"
	local cmd

	start_mgsmds || error "start_mgsmds failed"
	start_ost || error "unable to start OST"

	# add unknown configuration parameter.
	if [[ $PERM_CMD == *"set_param -P"* ]]; then
		cmd="$PERM_CMD ost.$FSNAME-OST0000*.unknown_param"
	else
		cmd="$PERM_CMD $FSNAME-OST0000*.ost.unknown_param"
	fi
	do_facet mgs "$cmd=50"
	cleanup_nocli || error "cleanup_nocli failed with $?"
	load_modules

	# unknown param should be ignored while mounting.
	start_ost || error "unable to start OST after unknown param set"

	cleanup || error "cleanup failed with $?"
}
run_test 107 "Unknown config param should not fail target mounting"

t_108_prep() {
	local facet

	$rcmd rm -rf $tmp > /dev/null 2>&1
	$rcmd mkdir -p $tmp/{mnt,images} || error "failed to mkdir remotely"

	for facet in $facets; do
		[ "$mds1_FSTYPE" = zfs ] &&
			$rcmd $ZPOOL -f export lustre-$facet > /dev/null 2>&1
		$rcmd mkdir $tmp/mnt/$facet ||
			error "failed to mkdir $tmp/mnt/$facet"
		$rcmd dd if=/dev/zero of=$tmp/images/$facet \
			seek=199 bs=1M count=1 ||
			error "failed to create $tmp/images/$facet"
	done
}

t_108_mkfs() {
	local role=$1
	local idx=$2
	local bkfs=$3
	local mgs=$4
	local facet=${role}$((idx + 1))
	local pool=""
	[ $# -eq 5 ] && pool=$5

	do_facet $SINGLEMDS $MKFS --fsname=lustre --$mgs \
		--$role --index=$idx --replace --backfstype=$bkfs \
		--device-size=200000 --reformat $pool $tmp/images/$facet ||
		error "failed to mkfs for $facet"
}

t_108_check() {
	echo "mounting client..."
	mount -t lustre ${nid}:/lustre $MOUNT ||
		error "failed to mount lustre"

	echo "check list"
	ls -l $MOUNT/local_dir || error "failed to list"

	echo "check truncate && write"
	echo "dummmmmmmmmmmmm" > $MOUNT/remote_dir/fsx.c ||
		error "failed to tuncate & write"

	echo "check create"
	touch $MOUNT/foooo ||
		error "failed to create"

	echo "check read && write && append"
	sha1sum $MOUNT/conf-sanity.sh |
		awk '{ print $1 }' > $MOUNT/checksum.new ||
		error "failed to read(1)"
	sha1sum $MOUNT/remote_dir/unlinkmany.c |
		awk '{ print $1 }' >> $MOUNT/checksum.new ||
		error "failed to read(2)"
	sha1sum $MOUNT/striped_dir/lockahead_test.o |
		awk '{ print $1 }' >> $MOUNT/checksum.new ||
		error "failed to read(3)"

	echo "verify data"
	diff $MOUNT/checksum.new $MOUNT/checksum.src ||
		error "failed to verify data"

	echo "done."
}

t_108_cleanup() {
	trap 0
	local facet

	echo "cleanup..."
	umount -f $MOUNT || error "failed to umount client"
	for facet in $facets; do
		$rcmd umount -f $tmp/mnt/$facet ||
			error "failed to umount $facet"
		if [ "$mds1_FSTYPE" = zfs ]; then
			$rcmd $ZPOOL export -f lustre-$facet ||
				error "failed to export lustre-$facet"
		fi
	done

	$rcmd rm -rf $tmp || error "failed to rm the dir $tmp"
}

test_108a() {
	[ "$CLIENTONLY" ] && skip "Client-only testing"
	[ "$mds1_FSTYPE" != zfs ] && skip "zfs only test"
	[ "$MDS1_VERSION" -lt $(version_code 2.10.58) ] &&
		skip "Need server version at least 2.10.58"

	stopall
	load_modules

	local tmp=$TMP/$tdir
	local rcmd="do_facet $SINGLEMDS"
	local facets="mdt1 mdt2 ost1 ost2"
	local nid=$($rcmd $LCTL list_nids | head -1)
	local facet

	trap t_108_cleanup EXIT ERR
	t_108_prep

	t_108_mkfs mdt 0 zfs mgs lustre-mdt1/mdt1
	t_108_mkfs mdt 1 zfs mgsnode=$nid lustre-mdt2/mdt2
	t_108_mkfs ost 0 zfs mgsnode=$nid lustre-ost1/ost1
	t_108_mkfs ost 1 zfs mgsnode=$nid lustre-ost2/ost2

	for facet in $facets; do
		$rcmd zfs set mountpoint=$tmp/mnt/$facet canmount=on \
			lustre-$facet/$facet ||
			error "failed to zfs set for $facet (1)"
		$rcmd zfs mount lustre-$facet/$facet ||
			error "failed to local mount $facet"
		$rcmd tar jxf $LUSTRE/tests/ldiskfs_${facet}_2_11.tar.bz2 \
			--xattrs --xattrs-include="trusted.*" \
			-C $tmp/mnt/$facet/ > /dev/null 2>&1 ||
			error "failed to untar image for $facet"
		$rcmd "cd $tmp/mnt/$facet && rm -rf oi.* OI_* lfsck_* LFSCK" ||
			error "failed to cleanup for $facet"
		$rcmd zfs umount lustre-$facet/$facet ||
			error "failed to local umount $facet"
		$rcmd zfs set canmount=off lustre-$facet/$facet ||
			error "failed to zfs set $facet (2)"
	done

	echo "changing server nid..."
	$rcmd mount -t lustre -o nosvc lustre-mdt1/mdt1 $tmp/mnt/mdt1
	$rcmd lctl replace_nids $FSNAME-MDT0000 $nid
	$rcmd lctl replace_nids $FSNAME-MDT0001 $nid
	$rcmd lctl replace_nids $FSNAME-OST0000 $nid
	$rcmd lctl replace_nids $FSNAME-OST0001 $nid
	$rcmd umount $tmp/mnt/mdt1

	for facet in $facets; do
		echo "mounting $facet from backup..."
		$rcmd mount -t lustre -o abort_recov lustre-$facet/$facet \
			$tmp/mnt/$facet || error "failed to mount $facet"
	done

	# ZFS backend can detect migration and trigger OI scrub automatically
	# sleep 3 seconds for scrub done
	sleep 3

	t_108_check
	t_108_cleanup
}
run_test 108a "migrate from ldiskfs to ZFS"

test_108b() {
	[ "$CLIENTONLY" ] && skip "Client-only testing"
	[ "$mds1_FSTYPE" != ldiskfs ] && skip "ldiskfs only test"
	[ "$MDS1_VERSION" -lt $(version_code 2.10.58) ] &&
		skip "Need server version at least 2.10.58"

	stopall
	load_modules

	local tmp=$TMP/$tdir
	local rcmd="do_facet $SINGLEMDS"
	local facets="mdt1 mdt2 ost1 ost2"
	local scrub_list="MDT0000 MDT0001 OST0000 OST0001"
	local nid=$($rcmd $LCTL list_nids | head -1)
	local facet

	trap t_108_cleanup EXIT ERR
	t_108_prep

	t_108_mkfs mdt 0 ldiskfs mgs
	t_108_mkfs mdt 1 ldiskfs mgsnode=$nid
	t_108_mkfs ost 0 ldiskfs mgsnode=$nid
	t_108_mkfs ost 1 ldiskfs mgsnode=$nid

	for facet in $facets; do
		$rcmd mount -t ldiskfs -o loop $tmp/images/$facet \
			$tmp/mnt/$facet ||
			error "failed to local mount $facet"

		$rcmd tar jxf $LUSTRE/tests/zfs_${facet}_2_11.tar.bz2 \
			--xattrs --xattrs-include="*.*" \
			-C $tmp/mnt/$facet/ > /dev/null 2>&1 ||
			error "failed to untar image for $facet"
		$rcmd "cd $tmp/mnt/$facet && rm -rf oi.* OI_* lfsck_* LFSCK" ||
			error "failed to cleanup for $facet"
		$rcmd umount $tmp/mnt/$facet ||
			error "failed to local umount $facet"
	done

	echo "changing server nid..."
	$rcmd mount -t lustre -o nosvc,loop $tmp/images/mdt1 $tmp/mnt/mdt1
	$rcmd lctl replace_nids $FSNAME-MDT0000 $nid
	$rcmd lctl replace_nids $FSNAME-MDT0001 $nid
	$rcmd lctl replace_nids $FSNAME-OST0000 $nid
	$rcmd lctl replace_nids $FSNAME-OST0001 $nid
	$rcmd umount $tmp/mnt/mdt1

	for facet in $facets; do
		echo "mounting $facet from backup..."
		$rcmd mount -t lustre -o loop,abort_recov $tmp/images/$facet \
			$tmp/mnt/$facet || error "failed to mount $facet"
	done

	for facet in $scrub_list; do
		$rcmd $LCTL lfsck_start -M $FSNAME-$facet -t scrub ||
			error "failed to start OI scrub on $facet"
	done

	# sleep 3 seconds for scrub done
	sleep 3

	t_108_check
	t_108_cleanup
}
run_test 108b "migrate from ZFS to ldiskfs"

#
# set number of permanent parameters
#
test_109_set_params() {
	local fsname=$1

	set_persistent_param_and_check mds			    \
	    "mdd.$fsname-MDT0000.atime_diff"			    \
	    "$fsname-MDT0000.mdd.atime_diff"			    \
	    "62"
	set_persistent_param_and_check mds			    \
	    "mdd.$fsname-MDT0000.atime_diff"			    \
	    "$fsname-MDT0000.mdd.atime_diff"			    \
	    "63"
	set_persistent_param_and_check client			    \
	    "llite.$fsname*.max_read_ahead_mb"			    \
	    "$fsname.llite.max_read_ahead_mb"			    \
	    "32"
	set_persistent_param_and_check client			    \
	    "llite.$fsname*.max_read_ahead_mb"			    \
	    "$fsname.llite.max_read_ahead_mb"                       \
	    "64"
	create_pool $fsname.pool1 || error "create pool failed"
	do_facet mgs $LCTL pool_add $fsname.pool1 OST0000 ||
		error "pool_add failed"
	do_facet mgs $LCTL pool_remove $fsname.pool1 OST0000 ||
		error "pool_remove failed"
	do_facet mgs $LCTL pool_add $fsname.pool1 OST0000 ||
		error "pool_add failed"
}

#
# check permanent parameters
#
test_109_test_params() {
	local fsname=$1

	local atime_diff=$(do_facet mds $LCTL \
		get_param -n mdd.$fsname-MDT0000.atime_diff)
	[ $atime_diff == 63 ] || error "wrong mdd parameter after clear_conf"
	local max_read_ahead_mb=$(do_facet client $LCTL \
		get_param -n llite.$fsname*.max_read_ahead_mb)
	[ $max_read_ahead_mb == 64 ] ||
		error "wrong llite parameter after clear_conf"
	local ost_in_pool=$(do_facet mds $LCTL pool_list $fsname.pool1 |
		grep -v "^Pool:" | sed 's/_UUID//')
	[ $ost_in_pool = "$fsname-OST0000" ] ||
		error "wrong pool after clear_conf"
}

#
# run lctl clear_conf, store CONFIGS before and after that
#
test_109_clear_conf()
{
	local clear_conf_arg=$1

	local mgsdev
	if ! combined_mgs_mds ; then
		mgsdev=$(mgsdevname)
		stop_mgs || error "stop_mgs failed"
		start_mgs "-o nosvc" || error "start_mgs nosvc failed"
	else
		mgsdev=$(mdsdevname 1)
		start_mdt 1 "-o nosvc" || error "start_mdt 1 nosvc failed"
	fi

	do_facet mgs "rm -rf $TMP/${tdir}/conf1; mkdir -p $TMP/${tdir}/conf1;" \
		"$DEBUGFS -c -R \\\"rdump CONFIGS $TMP/${tdir}/conf1\\\" \
		$mgsdev"

	#
	# the command being tested
	#
	do_facet mgs $LCTL clear_conf $clear_conf_arg ||
		error "clear_conf failed"
	if ! combined_mgs_mds ; then
		stop_mgs || error "stop_mgs failed"
	else
		stop_mdt 1 || error "stop_mdt 1 failed"
	fi

	do_facet mgs "rm -rf $TMP/${tdir}/conf2; mkdir -p $TMP/${tdir}/conf2;" \
		"$DEBUGFS -c -R \\\"rdump CONFIGS $TMP/${tdir}/conf2\\\" \
		$mgsdev"
}

test_109_file_shortened() {
	local file=$1
	local sizes=($(do_facet mgs "stat -c %s " \
		"$TMP/${tdir}/conf1/CONFIGS/$file" \
		"$TMP/${tdir}/conf2/CONFIGS/$file"))
	[ ${sizes[1]} -lt ${sizes[0]} ] && return 0
	return 1
}

test_109a()
{
	[ $MDS1_VERSION -lt $(version_code 2.10.59) ] &&
		skip "Needs MDS version 2.10.59 or later."
	[ "$(facet_fstype mgs)" == zfs ] &&
		skip "LU-8727: no implementation for ZFS"

	stopall
	reformat
	setup_noconfig
	client_up || error "client_up failed"

	#
	# set number of permanent parameters
	#
	test_109_set_params $FSNAME

	umount_client $MOUNT || error "umount_client failed"
	stop_ost || error "stop_ost failed"
	stop_mds || error "stop_mds failed"

	test_109_clear_conf $FSNAME
	#
	# make sure that all configs are cleared
	#
	test_109_file_shortened $FSNAME-MDT0000 ||
		error "failed to clear MDT0000 config"
	test_109_file_shortened $FSNAME-client ||
		error "failed to clear client config"

	setup_noconfig

	#
	# check that configurations are intact
	#
	test_109_test_params $FSNAME

	#
	# Destroy pool.
	#
	destroy_test_pools || error "destroy test pools failed"

	cleanup
}
run_test 109a "test lctl clear_conf fsname"

test_109b()
{
	[ $MDS1_VERSION -lt $(version_code 2.10.59) ] &&
		skip "Needs MDS version 2.10.59 or later."
	[ "$(facet_fstype mgs)" == zfs ] &&
		skip "LU-8727: no implementation for ZFS"

	stopall
	reformat
	setup_noconfig
	client_up || error "client_up failed"

	#
	# set number of permanent parameters
	#
	test_109_set_params $FSNAME

	umount_client $MOUNT || error "umount_client failed"
	stop_ost || error "stop_ost failed"
	stop_mds || error "stop_mds failed"

	test_109_clear_conf $FSNAME-MDT0000
	#
	# make sure that only one config is cleared
	#
	test_109_file_shortened $FSNAME-MDT0000 ||
		error "failed to clear MDT0000 config"
	test_109_file_shortened $FSNAME-client &&
		error "failed to clear client config"

	setup_noconfig
	#
	# check that configurations are intact
	#
	test_109_test_params $FSNAME

	#
	# Destroy pool.
	#
	destroy_test_pools || error "destroy test pools failed"

	cleanup
}
run_test 109b "test lctl clear_conf one config"

test_110()
{
	[[ "$mds1_FSTYPE" == ldiskfs ]] ||
		skip "Only applicable to ldiskfs-based MDTs"
	do_facet mds1 $DEBUGFS -w -R supported_features |grep large_dir ||
		skip "large_dir option is not supported on MDS"

	# stop all targets before modifying the target counts
	local old_mdscount=$MDSCOUNT
	local old_ostcount=$OSTCOUNT
	stack_trap "MDSCOUNT=$old_mdscount OSTCOUNT=$old_ostcount \
		reformat_and_config"
	MDSCOUNT=1
	OSTCOUNT=1
	reformat
	# ext4_dir_entry_2 struct size:264
	# dx_root struct size:8
	# dx_node struct size:8
	# dx_entry struct size:8
	# For 1024 bytes block size.
	# First level directory entries: 126
	# Second level directory entries: 127
	# Entries in leaf: 3
	# For 2 levels limit: 48006
	# For 3 levels limit : 6096762
	# Create enough files to safely exceed 2-level htree limit.
	CONF_SANITY_110_LINKS=${CONF_SANITY_110_LINKS:-60000}

	# can fit at most 3 filenames per 1KB leaf block, but each
	# leaf/index block will only be 3/4 full before split at each level
	(( MDSSIZE < CONF_SANITY_110_LINKS / 3 * 4/3 * 4/3 )) &&
		CONF_SANITY_110_LINKS=$((MDSSIZE * 3 * 3/4 * 3/4))

	local dev=$(mdsdevname 1)
	local opts="$(mkfs_opts mds1 $dev) --reformat $dev $(mdsvdevname 1)"

	if [[ $opts != *large_dir* ]]; then
		if [[ $opts != *mkfsoptions* ]]; then
			opts+=" --mkfsoptions=\\\"-O large_dir\\\""
		else
			if [[ $opts != *-O* ]]; then
				opts="${opts//--mkfsoptions=\\\"/ \
					--mkfsoptions=\\\"-O large_dir }"
			else
				opts="${opts/-O /-O large_dir,}"
			fi
		fi
	fi

	# Use INDEX_UNASSIGNED for index for --mkfsoptions
	if [[ $opts != *mkfsoptions* ]]; then
		opts+=" --mkfsoptions=\\\"-b 1024 -i 65536\\\""
	else
		opts="${opts//--mkfsoptions=\\\"/ \
			--mkfsoptions=\\\"-b 1024 -i 65536 }"
	fi

	echo "MDT params: $opts"
	load_modules
	combined_mgs_mds || start_mgs
	add mds1 $opts || error "add mds1 failed with new params"
	start mds1 $dev $MDS_MOUNT_OPTS || error "start mds1 failed"
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS || error "start ost1 failed"
	MOUNT_2=yes mountcli || error "mount clients failed"

	mkdir -v $DIR/$tdir || error "cannot create $DIR/$tdir"
	local pids count=0 group=0

	echo "creating $CONF_SANITY_110_LINKS in total"
	while (( count < CONF_SANITY_110_LINKS )); do
		local len=$((253 - $(wc -c <<<"$tfile-$group-40000-")))
		local dir=DIR$((group % 2 + 1))
		local target=${!dir}/$tdir/$tfile-$group
		local long=$target-$(generate_name $len)-
		local create=$((CONF_SANITY_110_LINKS - count))

		(( create > 40000 )) && create=40000
		touch $target || error "creating $target failed"
		echo "creating $create hard links to $target"
		createmany -l $target $long $create &
		pids+=" $!"

		count=$((count + create))
		group=$((group + 1))
	done
	echo "waiting for PIDs$pids to complete"
	wait $pids || error "createmany failed after $group groups"

	stopall

	run_e2fsck $(facet_active_host mds1) $dev -n
}
run_test 110 "Adding large_dir with 3-level htree"

test_111() {
	[[ "$mds1_FSTYPE" = ldiskfs ]] ||
		skip "Only applicable to ldiskfs-based MDTs"
	do_facet mds1 $DEBUGFS -w -R supported_features |grep large_dir ||
		skip "large_dir option is not supported on MDS"

	# cleanup before changing target counts
	local old_mdscount=$MDSCOUNT
	local old_ostcount=$OSTCOUNT
	local old_mdssize=$MDSSIZE
	stack_trap "MDSSIZE=$old_mdssize MDSCOUNT=$old_mdscount \
		    OSTCOUNT=$old_ostcount reformat_and_config"
	MDSCOUNT=1
	OSTCOUNT=1
	reformat
	local min=5000000
	# cannot enlarge a block device, so skip the test if size not enough
	local dev=$(mdsdevname 1)

	if is_blkdev mds1 $dev; then
		is_blkdev mds1 $dev $min ||
			skip "$dev too small for ${min}kB MDS"
	fi
	(( MDSSIZE < min )) && MDSSIZE=$min # need at least 2.4GB
	local opts="$(mkfs_opts mds1 $dev) --reformat $dev $(mdsvdevname 1)"
	if [[ $opts != *large_dir* ]]; then
		if [[ $opts != *mkfsoptions* ]]; then
			opts+=" --mkfsoptions=\\\"-O large_dir\\\""
		else
			if [[ $opts != *-O* ]]; then
				opts="${opts//--mkfsoptions=\\\"/ \
					--mkfsoptions=\\\"-O large_dir }"
			else
				opts="${opts/-O /-O large_dir,}"
			fi
		fi
	fi

	echo "MDT params: $opts"
	load_modules
	combined_mgs_mds || start_mgs
	add mds1 $opts || error "add mds1 failed with new params"
	start mds1 $dev $MDS_MOUNT_OPTS ||
		error "start mds1 failed"
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS ||
		error "start ost1 failed"

	MOUNT_2=yes mountcli
	mkdir $DIR/$tdir || error "cannot create $DIR/$tdir"
	$LFS df $DIR/$tdir
	$LFS df -i $DIR/$tdir

	local group=0

	local start=$SECONDS
	local dirsize=0
	local dirmax=$((2 << 30))
	local needskip=0
	local taken=0
	local rate=0
	local left=0
	local num=0
	while (( !needskip & dirsize < dirmax )); do
		local pids=""

		for cli in ${CLIENTS//,/ }; do
			local len=$((253 - $(wc -c <<<"$cli-$group-60000-")))
			local target=$cli-$group
			local long=$DIR/$tdir/$target-$(generate_name $len)-

			RPWD=$DIR/$tdir do_node $cli touch $target ||
				error "creating $target failed"
			echo "creating 60000 hardlinks to $target"
			RPWD=$DIR/$tdir do_node $cli createmany -l $target $long 60000 &
			pids+=" $!"

			group=$((group + 1))
			target=$cli-$group
			long=$DIR2/$tdir/$target-$(generate_name $len)-

			RPWD=$DIR2/$tdir do_node $cli touch $target ||
				error "creating $target failed"
			echo "creating 60000 hardlinks to $target"
			RPWD=$DIR2/$tdir do_node $cli createmany -l $target $long 60000 &
			pids+=" $!"

			group=$((group + 1))
		done
		echo "waiting for PIDs$pids to complete"
		wait $pids || error "createmany failed after $group groups"

		dirsize=$(stat -c %s $DIR/$tdir)
		taken=$((SECONDS - start))
		rate=$((dirsize / taken))
		left=$(((dirmax - dirsize) / rate))
		num=$((group * 60000))
		echo "estimate ${left}s left after $num files / ${taken}s"
		echo "Reached $dirsize of $dirmax directory size"
		echo "Free space:"
		$LFS df $DIR/$tdir
		$LFS df -i $DIR/$tdir

		$FORCE_TEST_111 && continue
		# if the estimated time remaining is too large (it may change
		# over time as the create rate is not constant) then exit
		# without declaring a failure.
		(( left > 1200 )) && needskip=1
	done

	umount_client $MOUNT2 -f
	cleanup
	! (( needskip )) ||
		skip "ETA ${left}s after $num files / ${taken}s is too long"
	run_e2fsck $(facet_active_host mds1) $dev -n
}
run_test 111 "Adding large_dir with over 2GB directory"

test_112a() {
	local param="no_create"

	(( $OST1_VERSION > $(version_code 2.14.0) )) ||
		skip "need OSS at least 2.14.0"
	(( $OST1_VERSION >= $(version_code 2.15.56.125) )) ||
		param="no_precreate"

	start_mds || error "MDS start failed"
	start_ost || error "OSS start failed"
	echo "start ost2 service on $(facet_active_host ost2)"
	start ost2 $(ostdevname 2) $(csa_add "$OST_MOUNT_OPTS" -o $param) ||
		error "start ost2 facet failed"
	local val=$(do_facet ost2 \
		   "$LCTL get_param -n obdfilter.$FSNAME-OST0001*.$param")
	(( $val == 1 )) || error "obdfilter.$FSNAME-OST0001*.$param=$val"

	mount_client $MOUNT || error "mount client failed"
	wait_osc_import_state mds1 ost1 FULL
	wait_osc_import_ready client ost1
	wait_osc_import_ready client ost2

	$LFS setstripe -i 0 $DIR/$tfile.0 ||
		error "problem creating $tfile.0 on OST0000"
	$LFS setstripe -i 1 $DIR/$tfile.1 && $LFS getstripe $DIR/$tfile.1 &&
		(( $($LFS getstripe -i $DIR/$tfile.1) == 1 )) &&
		error "allowed to create $tfile.1 on OST0001"
	$LFS df -v $MOUNT
	$LFS df -v $MOUNT | grep -q "OST:1.*N" ||
		error "NOCREATE not in 'lfs df'"

	do_facet ost2 $LCTL set_param obdfilter.$FSNAME-OST0001*.$param=0
	sleep_maxage
	$LFS setstripe -i 1 $DIR/$tfile.2 ||
		error "failed to create $tfile.2 on ost1 facet"
	# files not cleaned with ONLY_REPEAT because of client unmount below
	rm -f $DIR/$tfile.[012]
	stop_ost2 || error "stop ost2 facet failed"
	cleanup
}
run_test 112a "mount OST with no_create option"

test_112b() {
	(( MDSCOUNT >= 2 )) || skip "need at least 2 MDTs"
	(( $MDS1_VERSION >= $(version_code 2.15.56.125) )) ||
		skip "need MDS >= 2.15.56.125"
	local mdsnum=$MDSCOUNT
	local facet=mds$mdsnum
	local mdtidx=$((mdsnum - 1))
	local mdtname=$FSNAME-MDT$(printf %04x $mdtidx)

	start_mds --mdscount $((mdsnum - 1)) || error "MDS start failed"
	start_mdt $mdsnum -o no_create || error "start $facet failed"
	local val=$(do_facet $facet \
		   "$LCTL get_param -n mdt.$mdtname*.no_create")
	(( $val == 1 )) || error "mdt.$mdtname*.no_create=$val"
	start_ost || error "ost1 start failed"
	start_ost2 || error "ost1 start failed"

	mount_client $MOUNT || error "mount client failed"
	wait_osc_import_ready $facet ost2

	$LFS df -v $MOUNT
	$LFS df -v $MOUNT | grep -q "MDT:$mdtidx.*N" ||
		error "NOCREATE not in 'lfs df'"

	$LFS mkdir -i $mdtidx $DIR/$tdir ||
		$LFS setdirstripe -D -c 1 -i -1 --max-inherit-rr 2 $DIR/$tdir ||
		error "error creating $tdir on $mdtname"
	stack_trap "rm -rf $DIR/$tdir"

	mkdir $DIR/$tdir/d1.{1..100} || error "mkdir $tdir/d1.{1..100} failed"
	$LFS getdirstripe -i $DIR/$tdir/d1.* | sort | uniq -c
	do_facet $facet $LCTL set_param mdt.$mdtname*.no_create=0
	# allow one initial create for delayed statfs on client
	(( $($LFS getdirstripe -i $DIR/$tdir/d1.* | grep -c $mdtidx) < 2 )) ||
		error "allowed create on $mdtname"
	sleep_maxage_lmv

	mkdir $DIR/$tdir/d2.{1..100} || error "mkdir $tdir/d2.{1..100} failed"
	$LFS getdirstripe -i $DIR/$tdir/d2.{1..100} | sort | uniq -c
	(( $($LFS getdirstripe -i $DIR/$tdir/d2.* | grep -c $mdtidx) > 10 )) ||
		error "no create on $mdtname"
	# files not cleaned with ONLY_REPEAT because of client unmount below
	rm -r $DIR/$tdir
	stop_ost2 || error "ost1 start failed"
	cleanup
}
run_test 112b "mount MDT with no_create option"

# Global for 113
SAVE_MGS_MOUNT_OPTS=$MGS_MOUNT_OPTS
SAVE_MDS_MOUNT_OPTS=$MDS_MOUNT_OPTS
SAVE_OST_MOUNT_OPTS=$OST_MOUNT_OPTS

cleanup_113() {
	trap 0

	stopall
	MGS_MOUNT_OPTS=$SAVE_MGS_MOUNT_OPTS
	MDS_MOUNT_OPTS=$SAVE_MDS_MOUNT_OPTS
	OST_MOUNT_OPTS=$SAVE_OST_MOUNT_OPTS
	# Revert old mount options back
	setupall
	# Subsequent following test requires
	# conf-sanity to be in stopall state.
	# Force 'stopall' so others following
	# test can pass
	stopall
}

# Error out with mount info
error_113() {
	local err=$1

	echo "--Client Mount Info--"
	mount | grep -i lustre
	echo "--Server Mount Info--"
	do_nodes $(tgts_nodes) mount | grep -i lustre

	error $err
}

test_113() {
	local ost_version="2.15.51" # Minimum version required

	(( OST1_VERSION >= $(version_code $ost_version) )) ||
		skip "Need server version at least $ost_version"
	sync; sleep 3
	stack_trap cleanup_113 EXIT

	# Reset before starting
	stopall
	setupall

	# Verify MDS's should start with "rw"
	do_facet $SINGLEMDS mount | grep "lustre.*rw,.*MDT" ||
		error_113 "$SINGLEMDS should be read-write"

	# Verify OST's should start with "rw"
	for (( i=1; i <= OSTCOUNT; i++ )); do
		do_facet ost$i mount | grep "lustre.*rw,.*OST" ||
			error_113 "ost$i should be read-write"
	done

	# rdonly_dev does not currently work for ldiskfs
	# We skip the rdonly_dev check until then.
	if [[ $ost1_FSTYPE == ldiskfs ]]; then
		echo "Shadow Mountpoint correctly reports rw for ldiskfs"
		return 0
	fi

	#
	# Only ZFS specific tests below.
	#

	# Must stop all (server+client) and restart to verify new
	# mount options
	stopall

	# add rdonly_dev to mount option
	MGS_MOUNT_OPTS=$(csa_add "$MGS_MOUNT_OPTS" -o rdonly_dev)
	MDS_MOUNT_OPTS=$(csa_add "$MDS_MOUNT_OPTS" -o rdonly_dev)
	OST_MOUNT_OPTS=$(csa_add "$OST_MOUNT_OPTS" -o rdonly_dev)

	# Only restart server(mds/ost). Sufficient for test
	setupall server_only || error "Fail to start servers"

	# Verify MDS's should be "ro"
	do_facet $SINGLEMDS mount | grep "lustre.*ro,.*MDT.*rdonly_dev" ||
		error_113 "$SINGLEMDS should be read-only"

	# Verify OST's should be "ro"
	for (( i=1; i <= OSTCOUNT; i++ )); do
		do_facet ost$i mount | grep "lustre.*ro,.*OST.*rdonly_dev" ||
			error_113 "ost$i should be read-only"
	done
}
run_test 113 "Shadow mountpoint correctly report ro/rw for mounts"

#
# Purpose: To verify dynamic thread (OSS) creation.
# (This was sanity/115)
#
test_114() {
	[ $PARALLEL == "yes" ] && skip "skip parallel run"
	remote_ost_nodsh && skip "remote OST with nodsh"

	# Lustre does not stop service threads once they are started.
	# Reset number of running threads to default.
	stopall
	setupall

	local OSTIO_pre
	local save_params="$TMP/sanity-$TESTNAME.parameters"

	# Get ll_ost_io count before I/O
	OSTIO_pre=$(do_facet ost1 \
		"$LCTL get_param ost.OSS.ost_io.threads_started | cut -d= -f2")
	# Exit if lustre is not running (ll_ost_io not running).
	[ -z "$OSTIO_pre" ] && error "no OSS threads"

	echo "Starting with $OSTIO_pre threads"
	local thread_max=$((OSTIO_pre * 2))
	local rpc_in_flight=$((thread_max * 2))

	# this is limited to OSC_MAX_RIF_MAX (256)
	[ $rpc_in_flight -gt 256 ] && rpc_in_flight=256
	thread_max=$((rpc_in_flight / 2))
	[ $thread_max -le $OSTIO_pre ] && skip "Too many ost_io threads" &&
		return

	# Number of I/O Process proposed to be started.
	local nfiles
	local facets=$(get_facets OST)

	save_lustre_params client "osc.*OST*.max_rpcs_in_flight" > $save_params
	save_lustre_params $facets "ost.OSS.ost_io.threads_max" >> $save_params

	# Set in_flight to $rpc_in_flight
	$LCTL set_param osc.*OST*.max_rpcs_in_flight=$rpc_in_flight ||
		error "Failed to set max_rpcs_in_flight to $rpc_in_flight"
	nfiles=${rpc_in_flight}
	# Set ost thread_max to $thread_max
	do_facet ost1 "$LCTL set_param ost.OSS.ost_io.threads_max=$thread_max"

	# 5 Minutes should be sufficient for max number of OSS
	# threads(thread_max) to be created.
	local timeout=300

	# Start I/O.
	local wtl=${WTL:-"$LUSTRE/tests/write_time_limit"}

	test_mkdir $DIR/$tdir
	for ((i = 1; i <= nfiles; i++)); do
		local file=$DIR/$tdir/${tfile}-$i

		$LFS setstripe -c -1 -i 0 $file
		($wtl $file $timeout)&
	done

	# I/O Started - Wait for thread_started to reach thread_max or report
	# error if thread_started is more than thread_max.
	echo "Waiting for thread_started to reach thread_max"
	local thread_started=0
	local end_time=$((SECONDS + timeout))

	while [ $SECONDS -le $end_time ] ; do
		echo -n "."
		# Get ost i/o thread_started count.
		thread_started=$(do_facet ost1 \
			"$LCTL get_param \
			ost.OSS.ost_io.threads_started | cut -d= -f2")
		# Break out if thread_started is equal/greater than thread_max
		if (( $thread_started >= $thread_max )); then
			echo ll_ost_io thread_started $thread_started, \
				equal/greater than thread_max $thread_max
			break
		fi
		sleep 1
	done

	# Cleanup - We have the numbers, Kill i/o jobs if running.
	jobcount=($(jobs -p))

	for ((i=0; i < ${#jobcount[*]}; i++)); do
		kill -9 ${jobcount[$i]}
		if [ $? -ne 0 ] ; then
			echo "warning: cannot kill WTL pid ${jobcount[$i]}"
		fi
	done

	# Cleanup files left by WTL binary.
	for ((i = 1; i <= nfiles; i++)); do
		local file=$DIR/$tdir/${tfile}-$i

		rm -rf $file
		if [ $? -ne 0 ] ; then
			echo "Warning: Failed to delete file $file"
		fi
	done

	restore_lustre_params <$save_params
	rm -f $save_params || echo "Warning: delete file '$save_params' failed"

	# Error out if no new thread has started or Thread started is greater
	# than thread max.
	if (( $thread_started <= $OSTIO_pre ||
		$thread_started > $thread_max )); then
		error "ll_ost_io: thread_started $thread_started" \
		      "OSTIO_pre $OSTIO_pre, thread_max $thread_max." \
		      "No new thread started or thread started greater " \
		      "than thread_max."
	fi
}
run_test 114 "verify dynamic thread creation===================="

cleanup_115()
{
	trap 0
	stopall
	do_facet mds1 rm -f $1
}

test_115() {
	if [ "$mds1_FSTYPE" != ldiskfs ]; then
		skip "Only applicable to ldiskfs-based MDTs"
	fi
	[ -n "$FILESET" ] && skip "Not functional for FILESET set"

	local dbfs_ver=$(do_facet mds1 $DEBUGFS -V 2>&1)

	echo "debugfs version: $dbfs_ver"
	echo "$dbfs_ver" | grep -E -w "1.44.3.wc1|1.44.5.wc1|1.45.2.wc1" &&
		skip_env "This version of debugfs doesn't show inode number"

	local IMAGESIZE=$((3072 << 30)) # 3072 GiB

	stopall

	FLAKEY=false

	echo "client1: "
	$LCTL dl
	mount | grep lustre
	echo "mds1: "
	do_facet mds1 "hostname; $LCTL dl; mount"
	echo "ost1: "
	do_facet ost1 "hostname; $LCTL dl; mount"
	# We need MDT size 3072GB, because it is smallest
	# partition that can store 2B inodes
	do_facet mds1 "mkdir -p $TMP/$tdir"
	local mdsimgname=$TMP/$tdir/lustre-mdt

	do_facet mds1 "rm -f $mdsimgname"
	do_facet mds1 "touch $mdsimgname"
	stack_trap "cleanup_115 $mdsimgname" EXIT
	do_facet mds1 "$TRUNCATE $mdsimgname $IMAGESIZE" ||
		skip "Backend FS doesn't support sparse files"
	local mdsdev=$(do_facet mds1 "losetup -f")

	do_facet mds1 "losetup $mdsdev $mdsimgname"

	local mds_opts="$(mkfs_opts mds1 $(mdsdevname 1))	 \
		--mkfsoptions='-O ea_inode,^resize_inode,meta_bg \
		-N 2247484000 -E lazy_itable_init' --device-size=$IMAGESIZE"
	add mds1 $mds_opts --mgs --reformat $mdsdev || {
		do_facet $SINGLEMDS \
			"losetup -d $mdsdev && rm -f $mdsimgname"
		skip_env "format large MDT failed"
	}

	local ostdev=$(ostdevname 1)

	local opts="$(mkfs_opts ost1 $ostdev) \
		--reformat $ostdev $ostdev"
	add ost1 $opts || error "add ost1 failed with new params"
	start mds1  $mdsdev $MDS_MOUNT_OPTS || error "start MDS failed"
	start_ost || error "start OSS failed"
	mount_client $MOUNT || error "mount client failed"

	mkdir -p $DIR/$tdir || error "mkdir $DIR/$tdir fail"
	local goal="/sys/fs/ldiskfs/$(basename $mdsdev)/inode_goal"
	echo goal: $goal
	# 2147483648 is 0x80000000
	do_facet mds1 "echo 2147483648 >> $goal; grep . $goal"
	touch $DIR/$tdir/$tfile

	# attrs from 1 to 16 go to block, 17th - to inode
	local i

	for i in {1..17}; do
		local nm="trusted.ea$i"
		setfattr -n $nm -v $(printf "xattr%0250d" $i) $DIR/$tdir/$tfile
	done

	do_facet mds1 "$DEBUGFS -c -R 'stat ROOT/$tdir/$tfile' $mdsdev"

	# inode <2147483649> trusted.ea16 (255)
	local inode_num=$(do_facet mds1 \
			"$DEBUGFS -c -R 'stat ROOT/$tdir/$tfile' $mdsdev" |
			 awk '/ea17/ { print $2 }' |
			 sed -e 's/>//' -e 's/<//' -e 's/\"//')
	echo "inode num: $inode_num"
	[ $inode_num -ge 2147483648 ] || error "inode $inode_num too small"
	do_facet mds1 "losetup -d $mdsdev"
}
run_test 115 "Access large xattr with inodes number over 2TB"

test_116() {
	[ "$mds1_FSTYPE" != ldiskfs ] && skip "ldiskfs only test"
	[ "$MDS1_VERSION" -lt $(version_code 2.10.59) ] &&
		skip "Need server version at least 2.10.59"
	do_facet $SINGLEMDS which mkfs.xfs ||
		skip_env "No mkfs.xfs installed"

	stopall
	load_modules

	local tmpmnt=$TMP/$tdir
	local mdtimg=$tfile-mdt0

	do_facet $SINGLEMDS mkdir -p $tmpmnt
	stack_trap "do_facet $SINGLEMDS rmdir $tmpmnt" EXIT

	do_facet $SINGLEMDS touch $TMP/$mdtimg
	stack_trap "do_facet $SINGLEMDS rm -f $TMP/$mdtimg" EXIT
	do_facet $SINGLEMDS mkfs -t xfs -d file,size=1t,name=$TMP/$mdtimg ||
		error "mkfs temporary xfs image"

	do_facet $SINGLEMDS mount $TMP/$mdtimg $tmpmnt ||
		error "mount temporary xfs image"
	stack_trap "do_facet $SINGLEMDS umount $tmpmnt" EXIT
	local old_mdssize=$MDSSIZE
	local old_mdsisize=$MDSISIZE

	MDSSIZE=$((17 * 1024 * 1024 * 1024)) # 17T MDT
	MDSISIZE=$((16 << 20))
	local opts17t="$(mkfs_opts $SINGLEMDS)"

	MDSSIZE=$old_mdssize
	MDSISIZE=$old_mdsisize

	do_facet $SINGLEMDS $MKFS \
		${opts17t/-E /-E lazy_itable_init,lazy_journal_init,} \
		$tmpmnt/$mdtimg ||
		error "failed to mkfs for $tmpmnt/$mdtimg"

	do_facet $SINGLEMDS $TUNE2FS -l $tmpmnt/$mdtimg |
		grep -qw 'features.*extent' || error "extent should be enabled"
	reformat_and_config
}
run_test 116 "big size MDT support"

test_117() {
	# Call setup only if LustreFS is not mounted
	check_mount || setup

	do_facet ost1 "$LCTL set_param ost.OSS.ost_io.nrs_policies=fifo"
	do_facet ost1 "$LCTL get_param -n ost.OSS.ost_io.nrs_tbf_rule" &&
		error "get_param should fail"
	cleanup || error "cleanup failed with rc $?"
}
run_test 117 "lctl get_param return errors properly"

test_119() {
	local had_config
	local size_mb

	[[ "$MDSCOUNT" -ge 2 ]] || skip "Need more at least 2 MDTs"

	had_config=$(do_facet mds1 "$LCTL get_param debug | grep config")
	do_facet mds1 "$LCTL set_param debug=+config"
	do_facet mds1 "$LCTL clear"

	setup
	do_facet mds2 "$TUNEFS --writeconf $(mdsdevname 2)" &>/dev/null
	# mount after writeconf will make "add osp" added to mdt0 config:
	# 53 (224)marker  60 (flags=0x01, v2.5.1.0) lustre-MDT0001  'add osp'
	# 54 (080)add_uuid  nid=...  0:  1:...
	# 55 (144)attach    0:lustre-MDT0001-osp-MDT0000  1:osp  2:...
	# 56 (144)setup     0:lustre-MDT0001-osp-MDT0000  1:...  2:...
	# 57 (136)modify_mdc_tgts add 0:lustre-MDT0000-mdtlov  1:...  2:1  3:1
	# duplicate modify_mdc_tgts caused crashes

	debug_size_save
	# using larger debug_mb size to avoid lctl dk log truncation
	size_mb=$((DEBUG_SIZE_SAVED * 4))
	for i in {1..3}; do
		stop_mdt 2
		# though config processing stops after failed attach and setup
		# it will proceed after the failed command after each writeconf
		# this is the original scenario of the issue
		do_facet mds2 "$TUNEFS --writeconf $(mdsdevname 2)" &>/dev/null
		do_facet mds1 "$LCTL set_param debug_mb=$size_mb"
		start_mdt 2

		wait_update_facet_cond mds1 \
			"$LCTL dk | grep -c Processed.log.$FSNAME-MDT0000" \
			">" 1 300
	done
	debug_size_restore

	[[ -z "$had_config" ]] && do_facet mds1 lctl set_param debug=-config

	reformat
}
run_test 119 "writeconf on slave mdt shouldn't duplicate mdc/osp and crash"

test_120() { # LU-11130
	[ "$MDSCOUNT" -lt 2 ] && skip "mdt count < 2"
	[ "$mds1_FSTYPE" != ldiskfs ] &&
		skip "ldiskfs only test"
	[ "$MDS1_VERSION" -lt $(version_code 2.11.56) ] &&
		skip "Need DNE2 capable MD target with LU-11130 fix"

	setup

	local mds1host=$(facet_active_host mds1)
	local mds1dev=$(mdsdevname 1)

	$LFS mkdir -i 1 $DIR/$tdir
	$LFS mkdir -i 0 $DIR/$tdir/mds1dir

	ln -s foo $DIR/$tdir/bar
	mv $DIR/$tdir/bar $DIR/$tdir/mds1dir/bar2 ||
		error "cross-target rename failed"

	stopall

	run_e2fsck $mds1host $mds1dev "-n"
}
run_test 120 "cross-target rename should not create bad symlinks"

test_121(){
	stopall
	start_mgsmds || error "MGS MDS Start failed"
	fail mgs
	stop_mds || error "Stopping MDSes failed"
	#failback
	start_mds
	fail mgs
	stop_mds || error "Stopping MDSes failed"
}
run_test 121 "failover MGS"

test_122a() {
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	[[ "$OST1_VERSION" -ge $(version_code 2.11.53) ]] ||
		skip "Need OST version at least 2.11.53"

	reformat
	LOAD_MODULES_REMOTE=true load_modules
#define OBD_FAIL_OFD_SET_OID 0x1e0
	do_facet ost1 $LCTL set_param fail_loc=0x00001e0

	setup_noconfig
	$LFS mkdir -i1 -c1 $DIR/$tdir
	$LFS setstripe -i0 -c1 $DIR/$tdir
	do_facet ost1 $LCTL set_param fail_loc=0
	createmany -o $DIR/$tdir/file_ 1000 ||
		error "Fail to create a new sequence"

	cleanup
}
run_test 122a "Check OST sequence update"

test_123aa() {
	remote_mgs_nodsh && skip "remote MGS with nodsh"
	[ -d $MOUNT/.lustre ] || setup

	# test old logid format until removal from llog_ioctl.c::str2logid()
	if (( $MGS_VERSION < $(version_code 2.99.53) )); then
		do_facet mgs $LCTL dl | grep MGS
		do_facet mgs "$LCTL --device %MGS llog_print \
			      \\\\\\\$$FSNAME-client 1 10" ||
			error "old llog_print failed"
	fi

	# test new logid format
	if [ $MGS_VERSION -ge $(version_code 2.9.53) ]; then
		do_facet mgs "$LCTL --device MGS llog_print $FSNAME-client" ||
			error "new llog_print failed"
	fi
}
run_test 123aa "llog_print works with FIDs and simple names"

test_123ab() {
	remote_mgs_nodsh && skip "remote MGS with nodsh"
	[[ $MGS_VERSION -gt $(version_code 2.11.51) ]] ||
		skip "Need server with working llog_print support"

	[ -d $MOUNT/.lustre ] || setup

	local yaml
	local orig_val
	local mgs_arg=""

	[[ $MGS_VERSION -gt $(version_code 2.13.54) ]] ||
		mgs_arg="--device MGS"

	orig_val=$(do_facet mgs $LCTL get_param jobid_name)
	do_facet mgs $LCTL set_param -P jobid_name="TESTNAME"

	yaml=$(do_facet mgs $LCTL $mgs_arg llog_print params |
	       grep jobid_name | tail -n 1)

	local param=$(awk '{ print $10 }' <<< "$yaml")
	local val=$(awk '{ print $12 }' <<< "$yaml")
	#return to the default
	do_facet mgs $LCTL set_param -P jobid_name=$orig_val
	[ $val = "TESTNAME" ] || error "bad value: $val"
	[ $param = "jobid_name," ] || error "Bad param: $param"
}
run_test 123ab "llog_print params output values from set_param -P"

test_123ac() { # LU-11566
	remote_mgs_nodsh && skip "remote MGS with nodsh"
	do_facet mgs "$LCTL help llog_print" 2>&1 | grep -q -- --start ||
		skip "Need 'lctl llog_print --start' on MGS"

	local start=10
	local end=50
	local mgs_arg=""

	[[ $MGS_VERSION -gt $(version_code 2.13.54) ]] ||
		mgs_arg="--device MGS"

	[ -d $MOUNT/.lustre ] || setup

	# - { index: 10, event: add_uuid, nid: 192.168.20.1@tcp(0x20000c0a81401,
	#     node: 192.168.20.1@tcp }
	do_facet mgs $LCTL $mgs_arg \
		llog_print --start $start --end $end $FSNAME-client | tr -d , |
		while read DASH BRACE INDEX idx EVENT BLAH BLAH BLAH; do
		(( idx >= start )) || error "llog_print index $idx < $start"
		(( idx <= end )) || error "llog_print index $idx > $end"
	done
}
run_test 123ac "llog_print with --start and --end"

test_123ad() { # LU-11566
	remote_mgs_nodsh && skip "remote MGS with nodsh"
	if (( $MDS1_VERSION >= $(version_code 2.16.50) )); then
		llog_info="llog info"
		llog_print="llog print"
	else
		llog_info="llog_info"
		llog_print="llog_print"
	fi
	# older versions of lctl may not print all records properly
	(( MGS_VERSION >= $(version_code 2.15.90) )) ||
		skip "Need MGS version at least 2.15.90"

	[ -d $MOUNT/.lustre ] || setup

	# append a new record, to avoid issues if last record was cancelled
	local old=$($LCTL get_param -n osc.*-OST0000-*.max_dirty_mb | head -1)
	do_facet mgs $LCTL conf_param $FSNAME-OST0000.osc.max_dirty_mb=$old
	stack_trap "do_facet mgs $LCTL conf_param -d $FSNAME-OST0000.osc.max_dirty_mb"

	# logid:            [0x3:0xa:0x0]:0
	# flags:            4 (plain)
	# records_count:    72
	# last_index:       72
	local num=$(do_facet mgs $LCTL --device MGS $llog_info $FSNAME-client |
		    awk '/last_index:/ { print $2 }')

	do_facet mgs $LCTL --device MGS $llog_print $FSNAME-client |
		grep -q "$FSNAME-OST0000.*osc\.max_dirty_mb=$old" ||
		error "ocs.max_dirty_mb=$old not found in $FSNAME-client"

	# - { index: 72, event: marker, flags: 0x06, ... }
	local last=$(do_facet mgs $LCTL --device MGS $llog_print -r $FSNAME-client |
		     tail -1 | awk '{ print $4 }' | tr -d , )
	(( last == num )) || error "$llog_print only showed $last/$num records"
}
run_test 123ad "llog_print shows all records"

test_123ae() { # LU-11566
	local max
	local mgs_arg=""
	local log
	local id
	local orig
	local new

	remote_mgs_nodsh && skip "remote MGS with nodsh"
	[ -d $MOUNT/.lustre ] || setupall

	max=$($LCTL get_param -n osc.*-OST0000-*.max_dirty_mb | head -1)
	pgs=$($LCTL get_param -n osc.*-OST0000-*.max_pages_per_rpc | head -1)
	[[ $MGS_VERSION -gt $(version_code 2.13.54) ]] ||
		mgs_arg="--device MGS"

	if do_facet mgs "$LCTL help llog_cancel" 2>&1| grep -q -- --log_id; then
		# save one set_param -P record in case none exist

		do_facet mgs $LCTL set_param -P osc.*.max_pages_per_rpc=$pgs
		stack_trap "do_facet mgs $LCTL set_param -P -d \
				osc.*.max_pages_per_rpc"

		log=params
		orig=$(do_facet mgs $LCTL $mgs_arg llog_print $log |
			tail -1 | awk '{ print $4 }' | tr -d , )
		do_facet mgs $LCTL set_param -P osc.*.max_dirty_mb=$max
		do_facet mgs $LCTL $mgs_arg llog_print $log | tail -1 |
			grep "parameter: osc.*.max_dirty_mb" ||
			error "new set_param -P wasn't stored in params log"

		# - { index: 71, event: set_param, device: general,
		#     param: osc.*.max_dirty_mb, value: 256 }
		id=$(do_facet mgs $LCTL $mgs_arg llog_print $log |
		     tail -1 | awk '{ print $4 }' | tr -d , )
		do_facet mgs $LCTL $mgs_arg llog_cancel $log --log_idx=$id
		local new=$(do_facet mgs $LCTL $mgs_arg llog_print $log |
			    tail -1 | awk '{ print $4 }' | tr -d , )
		(( new == orig )) ||
			error "new llog_cancel now $new, not at $orig records"
	fi

	# test old positional parameters for a while still
	if [ "$MGS_VERSION" -le $(version_code 3.1.53) ]; then
		log=$FSNAME-client

		do_facet mgs $LCTL conf_param \
			$FSNAME-OST0000.osc.max_pages_per_rpc=$pgs
		stack_trap "do_facet mgs $LCTL conf_param -d \
				$FSNAME-OST0000.osc.max_pages_per_rpc"

		orig=$(do_facet mgs $LCTL --device MGS llog_print $log |
		       tail -1 | awk '{ print $4 }' | tr -d , )
		do_facet mgs $LCTL conf_param $FSNAME-OST0000.osc.max_dirty_mb=$max
		do_facet mgs $LCTL --device MGS llog_print $log |
			tail -1 | grep "parameter: osc.max_dirty_mb" ||
			error "old conf_param wasn't stored in params log"
		do_facet mgs $LCTL --device MGS llog_print $log
		# - { index: 71, event: conf_param, device: testfs-OST0000-osc,
		#     param: osc.max_dirty_mb=256 }
		id=$(do_facet mgs $LCTL --device MGS llog_print $log |
		     tail -1 | awk '{ print $4 }' | tr -d , )
		do_facet mgs $LCTL --device MGS llog_cancel $log $id
		do_facet mgs $LCTL --device MGS llog_print $log
		new=$(do_facet mgs $LCTL --device MGS llog_print $log |
		      tail -1 | awk '{ print $4 }' | tr -d , )
		(( new == orig )) ||
			error "old llog_cancel now $new, not at $orig records"
	fi
}
run_test 123ae "llog_cancel can cancel requested record"

test_123af() { #LU-13609
	[ "$MGS_VERSION" -ge $(version_code 2.13.54) -a \
	   "$MDS1_VERSION" -ge $(version_code 2.13.54) ] ||
		skip "Need both MGS and MDS version at least 2.13.54"

	[ -d $MOUNT/.lustre ] || setupall
	stack_trap "do_facet mds1 $LCTL set_param fail_loc=0" EXIT

	local device
	local facet
	local cmd
	local orig_clist
	local orig_count
	local new_clist
	local new_count

	for device in "MGS" "$FSNAME-MDT0000"; do
		cmd="--device $device llog_catlist"
		echo "lctl $cmd ..."
		if [ "$device" = "MGS" ]; then
			facet="mgs"
		else
			facet="mds1"
		fi
		orig_clist=($(do_facet $facet $LCTL $cmd | awk '{ print $2 }'))
		orig_count=${#orig_clist[@]}
		echo "orig_clist: ${orig_clist[*]}"

		#define OBD_FAIL_CATLIST 0x131b
		#fetch to llog records from the second one
		do_facet $facet $LCTL set_param fail_loc=0x131b fail_val=2

		new_clist=($(do_facet $facet $LCTL $cmd | awk '{ print $2 }'))
		new_count=${#new_clist[@]}
		echo "new_clist: ${new_clist[*]}"

		[ $new_count -eq $((orig_count - 1)) ] ||
			error "$new_count != $orig_count - 1"
		for i in $(seq 0 $new_count); do
			j=$((i + 1))
			[ "${orig_clist[$j]}" = "${new_clist[$i]}" ] ||
				error "${orig_clist[$j]} != ${new_clist[$i]}"
		done
		do_facet mds1 $LCTL set_param fail_loc=0
		echo "done"
	done
}
run_test 123af "llog_catlist can show all config files correctly"

test_123ag() { # LU-15142
	local rec
	local orig_val

	remote_mgs_nodsh && skip "remote MGS with nodsh"
	(( $MGS_VERSION >= $(version_code 2.14.55) )) ||
		skip "Need server version least 2.14.55"

	[ -d $MOUNT/.lustre ] || setup

	orig_val=$(do_facet mgs $LCTL get_param jobid_name)
	stack_trap "do_facet mgs $LCTL set_param -P jobid_name=$orig_val"

	do_facet mgs $LCTL set_param -P jobid_name="TESTNAME1"
	do_facet mgs $LCTL set_param -P -d jobid_name
	rec=$(do_facet mgs $LCTL --device MGS llog_print params |
		grep -c jobid_name)
	(( rec == 0 )) || error "parameter was not deleted, check #1"
	do_facet mgs $LCTL set_param -P jobid_name="TESTNAME1"
	rec=$(do_facet mgs $LCTL --device MGS llog_print params |
		grep -c jobid_name)
	(( rec == 1)) || error "parameter is not set"
	# usage with ordinary set_param format works too
	do_facet mgs $LCTL set_param -P -d jobid_name="TESTNAME1"
	rec=$(do_facet mgs $LCTL --device MGS llog_print params |
		grep -c jobid_name)
	(( rec == 0 )) || error "parameter was not deleted, check #2"
}
run_test 123ag "llog_print skips values deleted by set_param -P -d"

test_123ah() { #LU-7668 del_ost
	(( "$MGS_VERSION" >= $(version_code 2.15.51) &&
	   "$MDS1_VERSION" >= $(version_code 2.15.51) )) ||
		skip "Need MGS/MDS version >= 2.15.51 for del_ost"

	[ -d $MOUNT/.lustre ] || setupall
	stack_trap "do_facet mds1 $LCTL set_param fail_loc=0" EXIT

	local cmd="--device MGS llog_print"

	cli_llogcnt_orig=$(do_facet mgs $LCTL $cmd $FSNAME-client |
				grep -c $FSNAME-OST0000)
	mds1_llogcnt_orig=$(do_facet mgs $LCTL $cmd $FSNAME-MDT0000 |
				grep -c $FSNAME-OST0000)

	[ $cli_llogcnt_orig -gt 0 ] ||
		error "$FSNAME-OST0000 not found (client)"
	[ $mds1_llogcnt_orig -gt 0 ] || error "$FSNAME-OST0000 not found (MDT)"

	# -n/--dryrun should NOT modify catalog
	do_facet mgs "$LCTL del_ost -n -t $FSNAME-OST0000" ||
		error "del_ost --dryrun failed with $?"

	local cli_llogcnt=$(do_facet mgs $LCTL $cmd $FSNAME-client |
			grep -c $FSNAME-OST0000)
	local mds1_llogcnt=$(do_facet mgs $LCTL $cmd $FSNAME-MDT0000 |
			grep -c $FSNAME-OST0000)

	[ $cli_llogcnt -eq $cli_llogcnt_orig ] ||
		error "--dryrun error: $cli_llogcnt != $cli_llogcnt_orig"
	[ $mds1_llogcnt -eq $mds1_llogcnt_orig ] ||
		error "--dryrun error: $mds1_llogcnt != $mds1_llogcnt_orig"

	# actual run
	do_facet mgs "$LCTL del_ost --target $FSNAME-OST0000" ||
		error "del_ost failed with $?"

	local cli_llogcnt=$(do_facet mgs $LCTL $cmd $FSNAME-client |
			grep -c $FSNAME-OST0000)
	local mds1_llogcnt=$(do_facet mgs $LCTL $cmd $FSNAME-MDT0000 |
			grep -c $FSNAME-OST0000)

	# every catalog entry for OST0000 should have been cancelled
	[ $cli_llogcnt -eq 0 ] || error "$FSNAME-OST0000 not cancelled (cli)"
	[ $mds1_llogcnt -eq 0 ] || error "$FSNAME-OST0000 not cancelled (MDT)"

	umount_client $MOUNT
	mount_client $MOUNT

	$LFS df | grep -q OST0000 && error "del_ost did not remove OST0000!"
	cleanup
	reformat_and_config
}
run_test 123ah "del_ost cancels config log entries correctly"

cleanup_123ai() {
	local timeout=$1

	echo "cleanup test 123ai"

	# cancel last timeout record
	do_facet mgs "$LCTL set_param -P -d timeout"

	# restore timeout value
	do_nodes $(all_nodes) "$LCTL set_param timeout=$timeout"
}

test_123ai() { #LU-16167
	local i
	local count
	local old_count
	local old_timeout

	remote_mgs_nodsh && skip "remote MGS with nodsh"
	(( MDS1_VERSION >= $(version_code v2_15_52-130-gc6da54aa75) )) ||
		skip "Need MDS >= 2.15.52.130 for llog skipped record fix"

	[[ -d $MOUNT/.lustre ]] || setup

	old_count=$(do_facet mgs "$LCTL --device MGS llog_print -r params" |
		    grep -c "parameter: timeout")

	old_timeout=$($LCTL get_param -n timeout)
	stack_trap "cleanup_123ai $old_timeout" EXIT

	# add and cancel params (2 * MAX_IOC_BUFLEN / 128 + 1 = 129)
	for i in {1..129}; do
		do_facet mgs "$LCTL set_param -P timeout=$i" ||
			error "fail to set timeout=$i on MGS"
	done

	count=$(do_facet mgs "$LCTL --device MGS llog_print -r params" |
		grep -c "parameter: timeout")

	((count - old_count == 129)) ||
		error "timeout record mismatch ($count - $old_count != 129)"

	do_facet mgs "$LCTL --device MGS llog_print params" |
		tail -1 | grep  "timeout, value: 129" ||
		error "llog_print could not display last record (timeout=129)"

}
run_test 123ai "llog_print display all non skipped records"

cleanup_123aj() {
	local svc=$1

	echo "cleanup test 123aj"

	# cancel last TBF parameter records
	do_facet mgs "$LCTL set_param -P -d  ${svc}.nrs_tbf_rule" || true
	do_facet mgs "$LCTL set_param -P -d  ${svc}.nrs_policies" || true

	# restore old NRS policy
	do_nodes $(osts_nodes) "$LCTL set_param ${svc}.nrs_policies=fifo"
}

check_compound_param_val() {
	local value llog_print
	local svc=$1
	shift

	llog_print=$(do_facet mgs "$LCTL llog_print params") ||
		error "fail to read CONFIG/params"

	for value in "$@"; do
		local n=$(grep -c "${svc}.*$value }$" <<< "$llog_print")

		(( n > 0 )) || error "fail to found '$value' in params config"
		(( n == 1 )) || error "several records found ($n) for '$value'"
	done
}

add_random_spaces()
{
	local word str
	local spaces=$(printf '%*s' $(($RANDOM % 4)) '')

	str=$spaces
	for word in $*; do
		spaces=$(printf '%*s' $(($RANDOM % 4)) '')
		str+="$word $spaces"
	done

	echo "${str:0:-1}"
}

test_123aj() { #LU-17920
	local old_policy
	local key rule
	local llog_print
	local -A tbf_rules
	local ost_io="ost.OSS.ost_io"

	tbf_rules[rule1]="start rule1 uid={500 502 } rate=1000"
	tbf_rules[rule2]="start rule2 nid={10.10.2.20@tcp} rate=1000"
	tbf_rules[rule3]="start rule3 jobid={cat.0.0} rate=1000"
	tbf_rules[rule4]="start rule4 jobid={fio.0.0} rate=500"
	tbf_rules[change4_1]="change rule4 rate=50"
	tbf_rules[change4_2]="change rule4 rate=5000"

	remote_mgs_nodsh && skip "remote MGS with nodsh"
	(( MGS_VERSION >= $(version_code v2_16_54-23) )) ||
		skip "need MGS >= v2_16_54-23 for compound llog records"

	[ -d $MOUNT/.lustre ] || setup

	stack_trap "cleanup_123aj $ost_io"

	do_facet mgs "$LCTL set_param -P ${ost_io}.nrs_policies=tbf" ||
		error "fail to set nrs_policies=tbf on MGS"

	for rule in "${tbf_rules[@]}"; do
		do_facet mgs "$LCTL set_param -P ${ost_io}.nrs_tbf_rule='$rule'" ||
			error "fail to set nrs_tbf_rule='$rule' on MGS"

		# the rec should be added only the first time
		rule="$(add_random_spaces "$rule")"
		do_facet mgs "$LCTL set_param -P ${ost_io}.nrs_tbf_rule='$rule'" ||
			error "fail to set nrs_tbf_rule='$rule' on MGS"
	done
	check_compound_param_val $ost_io "${tbf_rules[@]}"

	# remove all the rules
	do_facet mgs "$LCTL set_param -P -d ${ost_io}.nrs_tbf_rule" ||
		error "fail to remove all the TBF rules"

	llog_print=$(do_facet mgs "$LCTL llog_print params") ||
		error "fail to read CONFIG/params"
	! grep -q nrs_tbf_rule <<< "$llog_print" ||
		error "fail to remove all the TBF rules"

	# re-add the rules
	for rule in "${tbf_rules[@]}"; do
		do_facet mgs "$LCTL set_param -P ${ost_io}.nrs_tbf_rule='$rule'" ||
			error "fail to set nrs_tbf_rule='$rule' on MGS"
	done
	check_compound_param_val $ost_io "${tbf_rules[@]}"

	# shuffle and remove the rule one by one
	printf "%s\n" "${!tbf_rules[@]}" | sort -R |
		while read key; do
			rule="${tbf_rules[$key]}"
			unset tbf_rules[$key]
			do_facet mgs "$LCTL set_param -P -d ${ost_io}.nrs_tbf_rule='$rule'" ||
				error "fail to set nrs_tbf_rule='$rule' on MGS"
			check_compound_param_val $ost_io "${tbf_rules[@]}"
		done
}
run_test 123aj "check permanent TBF rules"

test_123_prep() {
	remote_mgs_nodsh && skip "remote MGS with nodsh"

	[ -d $MOUNT/.lustre ] || setup
	yaml_file="$TMP/$tfile.yaml"

	do_facet mgs rm "$yaml_file"
	cfgfiles=$(do_facet mgs "lctl --device MGS llog_catlist" |
			 sed 's/config_log://')

	# set jobid_var to a different value for test
	orig_val=$(do_facet mgs $LCTL get_param jobid_var)

	do_facet mgs $LCTL set_param -P jobid_var="TESTNAME"

	for i in $cfgfiles params; do
		do_facet mgs "lctl --device MGS llog_print ${i} >> $yaml_file"
	done

	echo "Unmounting FS"
	stopall
	echo "Writeconf"
	writeconf_all
	echo "Remounting"
	setup_noconfig
}

test_123_restore() {
	set_val=$(do_facet mgs $LCTL get_param jobid_var)

	do_facet mgs $LCTL set_param -P $orig_val

	[ $set_val == "jobid_var=TESTNAME" ] ||
		error "$set_val is not TESTNAME"

	do_facet mgs rm "$yaml_file"
	cleanup
}

test_123F() {
	local yaml_file
	local cfgfiles
	local orig_val
	local set_val

	test_123_prep

	# Reapply the config from before
	echo "Setting configuration parameters"
	do_facet mgs "$LCTL set_param -F $yaml_file" ||
		error "'set_param -F $yaml_file' failed"

	test_123_restore
}
run_test 123F "clear and reset all parameters using set_param -F"

test_123G() {
	(( MGS_VERSION >= $(version_code v2_15_58-66-g29cfdc2f1e7a) )) ||
		skip "Need MGS >= v2_15_58-66-g29cfdc2f1e7a for apply_yaml fix"

	local yaml_file
	local cfgfiles
	local orig_val
	local set_val

	test_123_prep

	# Reapply the config from before
	echo "Setting configuration parameters"
	do_facet mgs "$LCTL apply_yaml $yaml_file" ||
		error "'apply_yaml $yaml_file' failed"

	test_123_restore
}
run_test 123G "clear and reset all parameters using apply_yaml"

test_123H() { #LU-18170
	local old
	local i

	(( MGS_VERSION >= $(version_code 2.16.51) )) ||
		skip "Need MGS version at least 2.16.51"

	[ -d $MOUNT/.lustre ] || setup

	old=$(do_facet mgs $LCTL get_param jobid_var)
	stack_trap "do_facet mgs $LCTL set_param -d jobid_var"
	stack_trap "do_facet mgs $LCTL set_param -P jobid_var=$old"

	# fill the "params" llog file
	for i in {1..50}; do
		do_facet mgs $LCTL set_param -P jobid_var=TEST_123H
		do_facet mgs $LCTL set_param -P jobid_var=$old
	done

	local llog_str
	local num
	llog_str=$(do_facet mgs $LCTL llog_print -r params) ||
		error "'lctl llog_print -r params' failed"
	num=$(wc -l <<< "$llog_str")

	# llog_print parallel executions
	do_facet mgs "seq 1 20 | "\
		"xargs -P20 -I{} bash -c '$LCTL llog_print -r params | wc -l' | "\
		"sort | uniq -c" |
		awk '$2 == "'$num'" { print $0; if ($1 != 20) exit 1; }' ||
		error "'corrupted output for 'lctl llog_print -r params'"
}
run_test 123H "check concurent accesses with 'lctl llog_print"

test_124()
{
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	[ -z $mds2failover_HOST ] && skip "needs MDT failover setup"

	setup
	do_facet mgs $LCTL --device MGS llog_print $FSNAME-client |
		grep 1.2.3.4@tcp && error "Should not be fake nid"
	do_facet mgs $LCTL conf_param $FSNAME-MDT0001.failover.node=1.2.3.4@tcp\
		|| error "Set params error"
	do_facet mgs $LCTL --device MGS llog_print $FSNAME-client |
		grep 1.2.3.4@tcp || error "Fake nid should be added"
	cleanup

	load_modules
	if combined_mgs_mds; then
		start_mdt 1 "-o nosvc" ||
			error "starting mds with nosvc option failed"
	fi
	local nid=$(do_facet mds2 $LCTL list_nids | head -1)
	local failover_nid=$(do_node $mds2failover_HOST $LCTL list_nids | head -1)

	do_facet mgs $LCTL replace_nids $FSNAME-MDT0001 $nid:$failover_nid ||
		error "replace_nids execution error"

	if combined_mgs_mds; then
		stop_mdt 1
	fi

	setup
	fail mds2
	echo "lfs setdirstripe"
	$LFS setdirstripe -i 1 $MOUNT/$tdir || error "setdirstirpe error"
	echo ok
}
run_test 124 "check failover after replace_nids"

get_max_sectors_kb() {
	local facet="$1"
	local device="$2"
	local dev_base=$(basename $(do_facet ${facet} "readlink -f ${device}"))
	local max_sectors_path="/sys/block/${dev_base}/queue/max_sectors_kb"

	do_facet ${facet} "[[ -e ${max_sectors_path} ]] &&
			   cat ${max_sectors_path}"
}

get_max_hw_sectors_kb() {
	local facet="$1"
	local device="$2"
	local dev_base=$(basename $(do_facet ${facet} "readlink -f ${device}"))
	local max_hw_path="/sys/block/${dev_base}/queue/max_hw_sectors_kb"

	do_facet ${facet} "[[ -e ${max_hw_path} ]] && cat ${max_hw_path}"
}

set_max_sectors_kb() {
	local facet="$1"
	local device="$2"
	local value="$3"
	local dev_base=$(basename $(do_facet ${facet} "readlink -f ${device}"))
	local max_sectors_path="/sys/block/${dev_base}/queue/max_sectors_kb"

	do_facet ${facet} "[[ -e ${max_sectors_path} ]] &&
			   echo ${value} > ${max_sectors_path}"
	rc=$?

	[[ $rc -ne 0 ]] && echo "Failed to set ${max_sectors_path} to ${value}"

	return $rc
}

# Return 0 if all slave devices have max_sectors_kb == max_hw_sectors_kb
# Otherwise return > 0
check_slaves_max_sectors_kb()
{
	local facet="$1"
	local device="$2"
	local dev_base=$(basename $(do_facet ${facet} "readlink -f ${device}"))
	local slaves_dir=/sys/block/${dev_base}/slaves
	local slave_devices=$(do_facet ${facet} "ls ${slaves_dir} 2>/dev/null")
	[[ -z ${slave_devices} ]] && return 0

	local slave max_sectors new_max_sectors max_hw_sectors path
	local rc=0

	for slave in ${slave_devices}; do
		path="/dev/${slave}"
		! is_blkdev ${facet} ${path} && continue
		max_sectors=$(get_max_sectors_kb ${facet} ${path})
		max_hw_sectors=$(get_max_hw_sectors_kb ${facet} ${path})
		new_max_sectors=${max_hw_sectors}
		[[ ${new_max_sectors} -gt ${RQ_SIZE_LIMIT} ]] &&
			new_max_sectors=${RQ_SIZE_LIMIT}

		if [[ ${max_sectors} -ne ${new_max_sectors} ]]; then
			echo "${path} ${max_sectors} ${new_max_sectors}"
			((rc++))
		fi
		check_slaves_max_sectors_kb ${facet} ${path}
		((rc + $?))
	done

	return $rc
}

test_126() {
	[[ "$MDS1_VERSION" -ge $(version_code 2.13.52) ]] ||
		skip "Need MDS version at least 2.13.52"

	cleanup
	do_rpc_nodes $(facet_active_host $SINGLEMDS) load_module ../libcfs/libcfs/libcfs
	#define OBD_FAIL_OBD_SETUP 0x60d
	do_facet mds1 $LCTL set_param fail_loc=0x60d
	do_rpc_nodes $(facet_active_host $SINGLEMDS) load_modules &
	for i in {1..40}; do
		do_facet mds1 lsmod | grep -q osd_$mds1_FSTYPE && break
		sleep 1
	done
	clear_failloc $SINGLEMDS 20 &
	start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS
}
run_test 126 "mount in parallel shouldn't cause a crash"

test_127() {
	[[ "$ost1_FSTYPE" == ldiskfs ]] || skip "ldiskfs only test"

	cleanup
	setup
	zconf_umount_clients $RCLIENTS $MOUNT

	wait_osp_active ost ${FSNAME}-OST0000 0 1
	local osc_tgt="$FSNAME-OST0000-osc-$($LFS getname -i $DIR)"
	local avail1=($($LCTL get_param -n osc.${osc_tgt}.kbytesavail))

	wait_delete_completed
	$LFS setstripe -i 0 -c1 $DIR/$tfile || {
		$LFS df $DIR
		$LCTL get_param osc.*.*grant_bytes
		error "failed creating $DIR/$tfile"
	}
	dd if=/dev/zero of=$DIR/$tfile bs=1M oflag=direct || true

	sleep_maxage
	local avail2=($($LCTL get_param -n osc.${osc_tgt}.kbytesavail))

	if ((avail2 * 100 / avail1 > 1)); then
		lfs df $DIR
		ls -l $DIR/$tfile
		error "more than 1% space left: before=$avail1 after=$avail2"
	fi

	local mbs=$(($(stat -c %s $DIR/$tfile) / (1024 * 1024)))

	dd if=/dev/zero of=$DIR/$tfile bs=1M count=$mbs conv=notrunc \
		oflag=direct || error "overwrite failed"
}
run_test 127 "direct io overwrite on full ost"

test_128()
{
	combined_mgs_mds && skip "need separate mgs device"
	[ "$ost2_FSTYPE" == zfs ] && import_zpool ost2

	format_ost 2
	# Try to apply nolocallogs to the virgin OST. Should fail.
	do_facet ost2 "$TUNEFS --nolocallogs $(ostdevname 2)" &&
		error "nolocallogs should not be allowed on the virgin target"

	setupall
	stopall

	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	# Start OST without MGS (local configs)
	do_facet ost1 "$TUNEFS --dryrun $(ostdevname 1)"
	start_ost || error "unable to start OST1"
	stop_ost || error "Unable to stop OST1"

	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	# Do not allow reading local configs, should fail
	do_facet ost1 "$TUNEFS --nolocallogs $(ostdevname 1)" ||
		error "Can not set nolocallogs"
	start_ost && error "OST1 started, but should fail"

	# Connect to MGS successfully, reset nolocallogs flag
	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	start_mgs || error "unable to start MGS"
	start_ost || error "unable to start OST1"

	do_facet ost1 "$TUNEFS --dryrun $(ostdevname 1)" | grep "nolocallogs" &&
		error "nolocallogs expected to be reset"

	stop_ost || error "Unable to stop OST1"
}
run_test 128 "Force using remote logs with --nolocallogs"

test_129()
{
	(( MDS1_VERSION >= $(version_code 2.14.57) )) ||
		skip "Need MDS version at least 2.14.57"
	stopall
	start_mgsmds || error "MGS/MDS start failed"
	format_ost 1
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS &&
		error "start ost1 should fail" || true
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS &&
		error "second start ost1 should fail" || true
	do_facet ost1 "$TUNEFS --writeconf $(ostdevname 1)"
	start ost1 $(ostdevname 1) $OST_MOUNT_OPTS ||
		error "start ost1 failed"
	stop ost1
	stop_mds
}
run_test 129 "attempt to connect an OST with the same index should fail"

test_130()
{
	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
	setupall
	stop_mdt 2 || error "mdt2 stop failed"
	do_facet mds2 "$TUNEFS --writeconf $(mdsdevname 2)"
	start_mdt 2 || error "mdt2 start failed"
	do_facet mds2 "$LCTL dl" | grep MDT0001-osp-MDT0001 &&
		error "Illegal OSP device created" || true
}
run_test 130 "re-register an MDT after writeconf"

test_131() {
	[ "$mds1_FSTYPE" == "ldiskfs" ] || skip "ldiskfs only test"
	(( $MDS1_VERSION >= $(version_code 2.14.56.35) )) ||
		skip "Need MDS version at least 2.14.56.35"
	do_facet mds1 $DEBUGFS -R features $(mdsdevname 1) |
		grep -q project || skip "skip project quota not supported"

	local projid

	setupall
	test_mkdir -c $MDSCOUNT -p $DIR/$tdir
	$LFS project -p 1000 $DIR/$tdir || error "set dir project id failed"
	createmany -o $DIR/$tdir/f 512
	for ((i = 0; i < 512; ++i)); do
		$LFS project -p $i $DIR/$tdir/f${i} ||
			error "set f${i} project id failed"
	done

	test_mkdir -c $MDSCOUNT -p $DIR/$tdir.inherit
	$LFS project -p 1001 -s $DIR/$tdir.inherit
	createmany -o $DIR/$tdir.inherit/f 128
	(( $($LFS project $DIR/$tdir.inherit/f* |
		awk '$1 == 1001 { print }' | wc -l) == 128 )) ||
			error "files did not inherit projid 1001"

	stopall

	for i in $(seq $MDSCOUNT); do
		mds_backup_restore mds$i ||
			error "Backup/restore on mds$i failed"
	done

	setupall

	projid=($($LFS project -d $DIR/$tdir))
	[ ${projid[0]} == "1000" ] ||
		error "projid expected 1000 not ${projid[0]}"
	for ((i = 0; i < 512; ++i)); do
		projid=($($LFS project $DIR/$tdir/f${i}))
		[ ${projid[0]} == "$i" ] ||
			error "projid expected $i not ${projid[0]}"
	done

	(( $($LFS project $DIR/$tdir.inherit/f* |
		awk '$1 == 1001 { print }' | wc -l) == 128 )) ||
			error "restore did not copy projid 1001"
}
run_test 131 "MDT backup restore with project ID"

test_132() {
	local err_cnt
	local err_cnt2

	(( MDS1_VERSION >= $(version_code 2.14.57) )) ||
		skip "Need MDS version at least 2.14.57"
	reformat
	combined_mgs_mds || start_mgs || error "unable to start MGS"
	start_mdt 1 || error "unable to start mdt1"

	err_cnt=$(do_facet mds1 dmesg | grep -c "cannot take the layout locks")
	stop_mdt 1 || error "stop mdt1 failed"

	[ "$mds1_FSTYPE" == zfs ] && import_zpool mds1
	do_facet mds1 $TUNEFS --param mdt.hsm_control=enabled $(mdsdevname 1) ||
		error "tunefs failed"
	start_mdt 1 || error "cannot start mdt1"

	err_cnt2=$(do_facet mds1 dmesg | grep -c "cannot take the layout locks")
	[ $err_cnt -eq $err_cnt2 ] || error "Can not take the layout lock"
	stop_mdt 1 || error "stop mdt1 failed"
}
run_test 132 "hsm_actions processed after failover"

# This test verifies we do RR allocation within a pool even if there is a
# significant imbalance vs an OST outside the pool
test_133() {
	[[ $OSTCOUNT -lt 4 ]] && skip_env "needs >= 4 OSTs"
	[[ "$OST1_VERSION" -ge $(version_code 2.15.51) ]] ||
		skip "Need OST version at least 2.15.51"
	# This is the easiest way to ensure OSTs start out balanced
	reformat_and_config
	setupall

	check_set_fallocate_or_skip

	local testfile=$DIR/$tdir/$tfile
	local pool="testpool"
	local ostrange=$((OSTCOUNT - 1))
	# Select all but the last OST to add to the pool
	local poolostrange=$((OSTCOUNT - 2))
	local filenum=20
	local filecount
	local stripecount

	declare -a AVAIL
	free_min_max

	[ $MINV -eq 0 ] && error "no free space in OST$MINI"
	[ $MAXV -gt $((2 * $MINV)) ] &&
		error "OSTs badly unbalanced after reformat"

	create_pool $FSNAME.$pool || error "failed to create a pool"
	do_facet mgs $LCTL pool_add $FSNAME.$pool OST[0-$poolostrange] ||
		error "failed to add OST[0-$poolostrange] to the pool"

	test_mkdir -p $DIR/$tdir || error "failed to mkdir $DIR/$tdir"
	# Consume space on the OSTs in the pool so they are unbalanced with the
	# OST outside of the pool
	# fill each OST 90% with fallocate so they are widely
	# imbalanced
	local size=$(((MINV * 9 / 10) * 1024))
	for ((i = 0; i <= poolostrange; i++)); do
		$LFS setstripe -c 1 -i $i $testfile$i ||
			error "failed to setstripe $testfile$i"
		fallocate -l $size $testfile$i || error "fallocate failed"
	done
	ls -la $DIR/$tdir
	sleep_maxage
	$LFS df

	# Create files in the pool now that there is an imbalance
	filecount=$(((OSTCOUNT - 1) * filenum))
	for ((i = 0; i < filecount; i++)); do
		$LFS setstripe -p $pool $testfile-$i ||
			error "failed to setstripe -p $pool $testfile-$i"
	done
	$LFS getstripe -i $testfile-* > /tmp/$tfile.log
	# Count the number of files with a stripe on each OST to verify the
	# pool allocated with round-robin
	for ((i = 0; i <= poolostrange; i++)); do
		stripecount=$(grep -c $i /tmp/$tfile.log)
		# Allow a little leeway
		if (( stripecount < filenum - 1 ||
		      stripecount > filenum + 1 )); then
			cat /tmp/$tfile.log
			error "$stripecount != $filenum files on OST$i"
		fi
	done

	# Create files across the system now that there is an imbalance
	filecount=$((OSTCOUNT * filenum))
	for ((i = 1; i < filecount; i++)); do
		$LFS setstripe $testfile-$i.2 ||
			error "failed to setstripe $testfile-$i.2"
	done
	$LFS getstripe -i $testfile-*.2 > /tmp/$tfile.log
	local qos_used=""
	# Count the number of files with a stripe on each OST to verify the
	# files are *NOT* allocated with round-robin
	for ((i = 0; i <= ostrange; i++)); do
		stripecount=$(grep -c $i /tmp/$tfile.log)
		if [[ $stripecount -ne $filenum ]]; then
			qos_used="true"
			echo "QOS: $stripecount != $filenum files on OST$i"
		fi
	done
	if [ -z "$qos_used" ]; then
		error "QOS not used on imbalanced OSTs!"
	fi

	rm -rf /tmp/$tfile.log $DIR/$tdir
	do_facet mgs $LCTL pool_remove $FSNAME.$pool OST[0-$poolostrange] ||
		"failed to remove OST[0-$poolostrange] from the pool"
	do_facet mgs $LCTL pool_destroy $FSNAME.$pool ||
		error "failed to destroy pool"
}
run_test 133 "stripe QOS: free space balance in a pool"

test_134() {
	[ "$mds1_FSTYPE" == "ldiskfs" ] || skip "ldiskfs only test"
	local errors
	local rc rc_corrupted
	local mdt_dev=$(facet_device mds1)
	local tmp_dir=$TMP/$tdir
	local dir=$DIR/$tdir
	local out=$tmp_dir/check_iam.txt
	local CHECK_IAM=${CHECK_IAM:-$(do_facet mds1 "which check_iam 2> /dev/null || true")}
	local iam_files=$(printf "oi.16.%d " {0..63})

	[[ -n "$CHECK_IAM" ]] || skip "check_iam not found"

	setupall

	# Fill the iam files
	test_mkdir -p $dir || error "failed to mkdir $DIR/$tdir"
	stack_trap "rm -rf $dir"

	touch $dir/$tfile.{0..1000} || error "failed to touch files"
	stack_trap "find $dir -type f | xargs -P10 -n1 unlink"

	local f
	for f in $dir/$tfile.{0..10}; do
		printf "%s\n" $f.ln.{0..500} | xargs -P10 -n1 ln $f ||
			error "failed to create 500 hard links of $f"
	done

	local nm_name=${TESTNAME:0:15}

	do_facet mgs "$LCTL nodemap_add $nm_name"
	stack_trap "do_facet mgs $LCTL nodemap_del $nm_name"
	do_facet mgs "$LCTL nodemap_add_range --name $nm_name --range '121.23.2.[100-120]@tcp'"

	do_facet mds1 "$LCTL lfsck_start -A && $LCTL lfsck_query -w > /dev/null"

	if (( MDS1_VERSION >= $(version_code 2.16.0) )); then
		# LU-18401
		iam_files+=$(printf "LFSCK/lfsck_layout_%02u " {0..15})
		iam_files+=$(printf "LFSCK/lfsck_namespace_%02u " {0..15})
		iam_files+="CONFIGS/nodemap "
	fi

	mkdir -p $tmp_dir
	for f in $iam_files; do
		#cmd introduce a random corruption to IAM file
		local tmp_file=$tmp_dir/$(basename $f)
		local cmd="dd if=/dev/urandom of=$tmp_file bs=2 conv=notrunc count=1 seek=$((RANDOM % 36))"

		local facet
		[[ "$f" =~ nodemap ]] && facet=mgs || facet=mds1
		do_facet $facet "mkdir -p $tmp_dir; \
		   $DEBUGFS -c -R 'dump $f $tmp_file' $mdt_dev 2>&1; \
		   $CHECK_IAM -rv $tmp_file 2>&1; \
		   echo $cmd; eval $cmd 2>/dev/null;
		   $CHECK_IAM -v $tmp_file 2>&1; \
		   rc=\\\$?; echo \\\$rc; exit \\\$rc;" >> $out 2>&1 ||
		   (( rc_corrupted += ($? == 255) )) || true
	done

	tail -n100 $out

	stack_trap "rm -rf $tmp_dir && do_facet mds1 rm -rf $tmp_dir" EXIT

	rc=$(grep -c "\<fault\>\|\<except" $out)
	(( rc == 0 )) || { cat $out &&
		error "check_iam failed with fault or exception $rc"; }

	errors=$(grep -c "FINISHED WITH ERRORS" $out)

	(( rc_corrupted == errors )) || { cat $out &&
		error "check_iam errcode does not fit with errors $rc $errors"; }
}
run_test 134 "check_iam works without faults"

cleanup_test_135(){
	local oldgc=$1

	printf "\nCleanup test_135\n" >&2
	do_facet mds1 "$LCTL set_param -n $oldgc"
	rm -rf $DIR/$tdir &> /dev/null
	cleanup
}

__test_135_file_thread() {
	local service="$1"
	local init_time=$(awk '{print $1}' /proc/uptime)
	local awkcmd="/crosses index zero/ {if (\$1 > $init_time) exit(1);}"

	#Generate a full plain llogs
	while dmesg | sed -r 's/(\[|\])//g' | awk "$awkcmd" ; do
		createmany -o $DIR/$tdir/f 4500 >&2
		createmany -u $DIR/$tdir/f 4500 >&2
	done
}

__test_135_reader() {
	local fd=$1
	local cl_user=$2
	local firstidx=$(changelog_user_rec mds1 $cl_user)
	local oldidx=$firstidx
	local newidx=0
	local pid=0
	local other

	while read -t10 -u$fd newidx other; do
		(( (newidx - oldidx) == 1 )) ||
			error  "changelog jump detected (last: $oldidx, current: $newidx)"

		if (( (newidx - firstidx + 1) % 13000 == 0 )); then
			[[ $pid -eq 0 ]] ||
				wait $pid || error "changelog_clear failed"
			changelog_clear $((newidx - 1)) mds1 >&2 & pid=$!
		fi
		oldidx=$newidx
	done

	[[ $pid -eq 0 ]] ||
		wait $pid || error "changelog_clear failed"

	echo "$oldidx"
}

test_135() {
	(( MDS1_VERSION >= $(version_code v2_15_54-21-g76cf742714) )) ||
		skip "need MDS >= 2.15.54.21 for llog catalog wrap fix"

	local service=$(facet_svc mds1)
	local rc=0
	local lastread lastidx
	local files_pid reader_pid
	local fd
	local init_time
	local cl_user

	# Need to reformat because we are changing llog catalog sizes to 5.
	# Otherwise, processing could fail with existing catalogs (last_idx>5).
	reformat
	setup_noconfig

	# Disable changelog garbage colector
	local oldgc=$(do_facet mds1 "$LCTL get_param mdd.${service}.changelog_gc")
	do_facet mds1 "$LCTL set_param -n mdd.${service}.changelog_gc=0"
	stack_trap "cleanup_test_135 $oldgc" EXIT INT

	# change the changelog_catalog size to 5 entries for everybody
#define OBD_FAIL_CAT_RECORDS                        0x1312
	do_nodes $(all_nodes) "$LCTL set_param fail_loc=0x1312 fail_val=5"

	# disable console ratelimit
	local rl=$(cat /sys/module/libcfs/parameters/libcfs_console_ratelimit)
	echo 0 > /sys/module/libcfs/parameters/libcfs_console_ratelimit
	stack_trap "echo $rl > /sys/module/libcfs/parameters/libcfs_console_ratelimit"

	test_mkdir -c 1 -i 0 $DIR/$tdir || error "Failed to create directory"
	do_nodes $(osts_nodes) $LCTL set_param \
		seq.*OST*-super.width=$DATA_SEQ_MAX_WIDTH

	changelog_chmask "ALL" || error "changelog_chmask failed"
	changelog_register || error "changelog_register failed"

	cl_user="${CL_USERS[mds1]%% *}"
	changelog_users mds1 | grep -q $cl_user ||
		error "User $cl_user not found in changelog_users"

	# Start reader thread
	coproc $LFS changelog --follow $service
	reader_pid=$!
	fd=${COPROC[0]}
	stack_trap "echo kill changelog reader; kill $reader_pid"

	echo -e "\nWrap arround changelog catalog"

	# Start file writer thread
	__test_135_file_thread "$service" & files_pid=$!
	stack_trap "(pkill -P$files_pid; kill $files_pid) &> /dev/null || true"

	# Check changelog entries
	lastread=$(__test_135_reader $fd $cl_user) || exit $?

	! kill -0 $files_pid 2>/dev/null ||
		error "creation thread is running. Is changelog reader stuck?"

	lastidx=$(changelog_users mds1 | awk '/current_index/ {print $NF}' )
	[[ "$lastread" -eq "$lastidx" ]] ||
		error "bad changelog lastidx (read: $lastread, mds: $lastidx)"
}
run_test 135 "check the behavior when changelog is wrapped around"

cleanup_136 () {
	do_facet mds2 "$LCTL --device ec cleanup" || true
	do_facet mds2 "$LCTL --device ec detach" || true

	stopall
	reformat_and_config
}

test_136() {
	(( MDSCOUNT >= 2 )) || skip "needs >= 2 MDTs"
	(( $MDS1_VERSION >= $(version_code v2_15_61-43-g55c143a66d) )) ||
		skip "Need MDS >= 2.15.61.43 for obdecho on second MDT"

	reformat
	setup_noconfig

	do_rpc_nodes $(facet_active_host mds2) "load_module obdecho/obdecho"
	do_facet mds2 "$LCTL attach echo_client ec ec_uuid" ||
	    error "echo attach fail"

	stack_trap cleanup_136 EXIT

	do_facet mds2 "$LCTL --device ec setup lustre-MDT0001 mdt" &&
	    error "attach to MDT should fail!"

	do_facet mds2 "$LCTL --device ec setup lustre-MDT0001 mdd" ||
	    error "attach to MDD should OK"
	do_facet mds2 "$LCTL --device ec test_mkdir /tt" &&
	    error "mkdir test should fail with remote object"

	return 0
}
run_test 136 "don't panic with bad obdecho setup"

test_137() {
	(( MDS1_VERSION >= $(version_code 2.15.61) )) ||
		skip "need MDS version at least 2.15.61"

	(( $MDSCOUNT >= 3 )) || skip "needs >= 3 MDTs"

	local failnode=1.2.3.4@$NETTYPE
	local keep_zpool=$KEEP_ZPOOL

	reformat
	#start mgs or mgs/mdt0
	if ! combined_mgs_mds ; then
		start_mgs || error "Fail to register mgs"
		start_mdt 1 || error "Fail to register mds1"
	else
		start_mdt 1 || error "Fail to register mds1"
	fi

	start_ost || error "OST0 start fail"

	mount_client $MOUNT || error "mount client fails"
	wait_osc_import_ready client ost
	check_mount || error "check_mount failed"

	# Add failover node on OST0000
	stop_ost
	[ "$ost1_FSTYPE" == zfs ] && import_zpool ost1
	do_facet ost1 "$TUNEFS --failnode=$failnode $(ostdevname 1)" ||
		error "ost1 tunefs failed"
	start_ost || error "OST0 start fail"

	# Add pool and parameters on MDT0000 to check the inheritance
	do_facet mgs $LCTL pool_new $FSNAME.pool1 || error "pool_new failed"
	do_facet mgs $LCTL pool_add $FSNAME.pool1 OST0000 ||
		error "pool_add failed"

	set_conf_param_and_check mds1					\
	    "$LCTL get_param -n lod.$FSNAME-MDT0000*.dom_stripesize"	\
	    "$FSNAME-MDT0000.lod.dom_stripesize"			\
	    "$((2<<20))"

	start_mdt 2 || error "Fail to register mds2"

	wait_osp_import mds1 mds2 FULL
	wait_osp_import mds2 mds1 FULL
	wait_osp_import mds2 ost1 FULL

	# Add failover node on MDT0001
	stop_mdt 2 || error "Fail to umount  mds2"
	[ "$mds1_FSTYPE" == zfs ] && import_zpool mds2
	do_facet mds2 "$TUNEFS --failnode=$failnode $(mdsdevname 2)" ||
		error "mds2 tunefs failed"
	start_mdt 2 || error "Fail to mount mds2"

	wait_osp_import mds1 mds2 FULL
	wait_osp_import mds2 mds1 FULL
	wait_osp_import mds2 ost1 FULL

	local i
	for ((i=3; i <= MDSCOUNT; i++)); do
		start_mdt $i || error "Fail to register mds$i"
	done

	wait_osc_import_state mds ost FULL

	for ((i=2; i <= MDSCOUNT; i++)); do
		local import
		local facet=mds$i
		local tgt=$(facet_svc $facet)
		local lod="lod.$tgt*"

		wait_osp_active mds $tgt $(( i - 1 )) 1

		do_facet $facet $LCTL get_param -n $lod.pools.pool1 |
			grep -q "OST0000" || error "pool1 should be inherited"

		val=$(do_facet $facet $LCTL get_param -n $lod.dom_stripesize)
		(( val == (2<<20) )) ||
			error "dom_stripesize should be inherited"

		import="osc.$FSNAME-OST0000-osc-${tgt#*-}.import"
		do_facet $facet $LCTL get_param -n $import |
			grep -q "failover_nids:.*$failnode" ||
			error "$failnode not found in $import"

		[[ "${tgt#*-}" != MDT0001 ]] || continue

		import="osp.$FSNAME-MDT0001-osp-${tgt#*-}.import"
		do_facet $facet $LCTL get_param -n $import |
			grep -q "failover_nids:.*$failnode" ||
			error "$failnode not found in $import"
	done

	cleanup || error "cleanup failed with rc $?"
	reformat_and_config
}
run_test 137 "a new MDT should inherit pools, parameters and failnode"

test_140() {
	(( MDS1_VERSION >= $(version_code 2.15.55) )) ||
		skip "need MDS version at least 2.15.55"
	(( MDSCOUNT >= 2 )) || skip "needs >= 2 MDTs"

	RM_UPDATELOG=$(do_facet mds2 "which remove_updatelog 2> /dev/null")
	RM_UPDATELOG=${RM_UPDATELOG:-"$LUSTRE/scripts/remove_updatelog"}

	[ -f "$RM_UPDATELOG" ] ||
		skip_env "remove_updatelog is not found on mds2"

	local mntpt=$(facet_mntpt mds2)

	setup_noconfig
	test_mkdir -c $MDSCOUNT -p $DIR/$tdir ||
		error "mkdir $DIR/$tdir failed"
	mkdir $DIR/$tdir/d{1..256}

	stop_mdt 1
	stop_mdt 2

	mount_fstype mds2 || error "mount as fstype mds2 failed"
	do_facet mds2 $RM_UPDATELOG -n $mntpt
	MDTS=($(do_facet mds2 $RM_UPDATELOG -n $mntpt |
		grep -o "Processing MDT[0-9]*" | awk -F'MDT' '{print $2}'))
	(( ${#MDTS[@]} == MDSCOUNT )) ||
		error "Processed ${#MDTS[@]} from $MDSCOUNT"

	do_facet mds2 $RM_UPDATELOG -n -m 1,0 $mntpt
	MDTS=($(do_facet mds2 $RM_UPDATELOG -n -m 1,0 $mntpt |
		grep -o "Processing MDT[0-9]*" | awk -F'MDT' '{print $2}'))
	(( ${#MDTS[@]} == 2 )) ||
		error "Processed ${#MDTS[@]} instead of 2"
	(( ${MDTS[0]} == 1 && ${MDTS[1]} == 0 )) ||
		error "Processed: ${MDTS[*]}, expected: 1 0"

	do_facet mds2 $RM_UPDATELOG -m 0 $mntpt
	unmount_fstype mds2
	start_mdt 2 || error "mds2 start fail"
	start_mdt 1 || error "mds1 start fail"
	wait_clients_import_state ${CLIENTS:-$HOSTNAME} mds1 FULL
	wait_clients_import_state ${CLIENTS:-$HOSTNAME} mds2 FULL

	rm -rf $DIR/$tdir || error "Can't remove $tdir"
	stopall
	reformat_and_config
}
run_test 140 "remove_updatelog script actions"

test_150() {
	setup

	local max_cached_mb=$($LCTL get_param llite.*.max_cached_mb |
			      awk '/^max_cached_mb/ { print $2 }')
	stack_trap "$LCTL set_param -n llite.*.max_cached_mb=$max_cached_mb"

	$LCTL set_param llite.*.max_cached_mb='100%'

	local new_max_cached_mb=$($LCTL get_param llite.*.max_cached_mb |
				  awk '/^max_cached_mb/ { print $2 }')
	local total_ram_mb=$(free -m | grep 'Mem:' | awk '{print $2}')

	$LCTL get_param llite.*.max_cached_mb
	echo "total ram mb: $total_ram_mb"
	(( new_max_cached_mb == total_ram_mb )) ||
		error "setting cache to 100% not equal to total RAM"

	$LCTL set_param llite.*.max_cached_mb='50%'
	new_max_cached_mb=$($LCTL get_param llite.*.max_cached_mb |
			    awk '/^max_cached_mb/ { print $2 }')

	$LCTL get_param llite.*.max_cached_mb
	(( new_max_cached_mb == $((total_ram_mb / 2)) )) ||
		error "setting cache to 50% not equal to 50% of RAM"

	$LCTL set_param llite.*.max_cached_mb='105%' &&
		error "should not be able to set insane value"

	$LCTL set_param llite.*.max_cached_mb='0%'
	new_max_cached_mb=$($LCTL get_param llite.*.max_cached_mb |
			    awk '/^max_cached_mb/ { print $2 }')
	# Minimum cache size is 64 MiB
	$LCTL get_param llite.*.max_cached_mb
	(( new_max_cached_mb == 64 )) ||
		error "setting cache to 0% != minimum cache size"
}
run_test 150 "test setting max_cached_mb to a %"

test_151a() {
	(( MDS1_VERSION >= $(version_code 2.15.58) )) ||
		skip "need MDS version at least 2.15.58"
	[[ "$ost1_FSTYPE" == ldiskfs ]] || skip "ldiskfs only test"

	cleanup
	if ! combined_mgs_mds ; then
		stop mgs
	fi

	echo "Damage ost1 local config log"
	do_facet ost1 "$DEBUGFS -w -R 'punch CONFIGS/$FSNAME-OST0000 0 1' \
		      $(ostdevname 1) || return \$?" ||
		error "do_facet ost1 failed with $?"

	# expect OST to fail mount with no MGS and bad local config
	start_ost && error "OST start should fail"

	if ! combined_mgs_mds ; then
		start_mgs
	fi
	start_mds || error "MDS start failed"
	# now it should start with MGS config
	start_ost || error "OST start failed"
	reformat_and_config
}
run_test 151a "damaged local config doesn't prevent mounting"

test_151b() {
	(( MDS1_VERSION >= $(version_code 2.15.63) )) ||
		skip "need MDS version at least 2.15.63"
	[[ "$ost1_FSTYPE" == ldiskfs ]] || skip "ldiskfs only test"

	cleanup
	if ! combined_mgs_mds ; then
		stop mgs
	fi

	start_mgsmds || error "MDS start failed"

	# start despite -ENOSPC errors
#define OBD_FAIL_LLOG_BACKUP_ENOSPC 0x131e
	do_facet ost1 $LCTL set_param fail_loc=0x131e
	start_ost || error "OST start failed"
	reformat_and_config
}
run_test 151b "-ENOSPC doesn't affect mount"

test_152() {
	(( MDS1_VERSION >= $(version_code 2.15.59.53) )) ||
		skip "need MDS >= 2.15.59.53 for sequence allocation retry"
	(( MDSCOUNT >= 2 )) || skip "needs >= 2 MDTs"
	local tf=$DIR/$tdir/$tfile
	local nost=$((OSTCOUNT+1))
	local nostdevname=$(ostdevname $nost)

	setupall
	stack_trap "reformat_and_config"
	test_mkdir -i 1 -c1 $DIR/$tdir || error "can't mkdir"

	log "ADD OST$nost"
	add ost$nost $(mkfs_opts ost1 $nostdevname) --index=$nost \
		--reformat $nostdevname $(ostvdevname $nost)
	[[ -d "$nostdevname" ]] || stack_trap "do_facet mds1 rm -f $nostdevname"

#define OBD_FAIL_OPS_FAIL_SEQ_ALLOC		0x2109
	do_facet mds1 $LCTL set_param fail_loc=0x80002109 fail_val=2
	echo "START OST$nost"
	stack_trap "stop ost$nost"
	start ost$nost $nostdevname $OST_MOUNT_OPTS &
	local PID=$!
	sleep 2

	$LFS setstripe -c -1 $tf &
	local PID2=$!
	sleep 2

	log "STOP OST$nost"
	# probably mount hasn't completed yet, so stop races with it
	while true; do
		stop ost$nost
		jobs -pr | grep -E "^$PID\$" && sleep 0.5 && continue
		break
	done
	wait $PID
	wait $PID2
	do_facet mds1 $LCTL set_param fail_loc=0
	log "START OST$nost again"
	start ost$nost $nostdevname $OST_MOUNT_OPTS ||
		error "can't start ost$nost"
	sleep 10
	$LFS setstripe -c -1 $tf-2 || error "can't touch  $tf-2"
	$LFS getstripe -v $tf-2
	local stripes=$($LFS getstripe -c $tf-2)
	(( stripes == $nost )) || error "$tf-2 $stripes != $nost"
}
run_test 152 "seq allocation error in OSP"

test_153a() {
	reformat_and_config

	start_mds || error "MDS start failed"
	start_ost || error "OST start failed"

	local nid=$($LCTL list_nids | grep ${NETTYPE} | head -n1)
	local net=${nid#*@}
	local mgs_nid=$(do_facet mgs $LCTL list_nids | head -1)
	local ost1_nid=$(do_facet ost1 $LCTL list_nids | head -1)
	local fake_pnid="192.168.252.112@${net}"
	local fake_nids="${fake_pnid},${fake_pnid}2"
	local fake_failover="10.252.252.113@${net},10.252.252.113@${net}2"
	local nids_and_failover="$fake_nids:$fake_failover:$ost1_nid:$mgs_nid"
	local period=0
	local pid
	local rc

	mount -t lustre $nids_and_failover:/lustre $MOUNT &
	pid=$!
	while (( period < 30 )); do
		[[ -n "$(ps -p $pid -o pid=)" ]] || break
		echo "waiting for mount ..."
		sleep 5
		period=$((period + 5))
	done
	$LCTL get_param mgc.MGC${fake_pnid}.import | grep "uptodate:"
	check_mount || error "check_mount failed"
	umount $MOUNT
	cleanup || error "cleanup failed with rc $?"
}
run_test 153a "bypass invalid NIDs quickly"

#LU-17367
test_153b() {
	reformat_and_config
	setupall

	local IPv6_1="6699:7654::1234:1234:d84@tcp"
	local IPv6_2="2001:0db8:85a3:0000:0000:8a2e:0370:7334@tcp"
	local IPv6_3="5031:db8:85a3:8d3:1319:8a2e:370:7348@tcp"
	local IPv4_1="127.0.0.5"
	local IPv4_2="193.168.0.240@tcp"
	local IPv4_3="162.32.0.100"

	local mgslist

	umount $MOUNT

	mgslist="$IPv6_1:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$mgs_HOST:$mgs_HOST:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$mgs_HOST:$IPv6_1"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$mgs_HOST:$IPv4_1"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv4_1:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv4_2:$IPv4_1:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv6_1,$IPv4_2,$IPv4_1:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1\
:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1\
:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1\
:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1\
:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1:$IPv4_1\
:$IPv4_1:$IPv4_1:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv6_1,$IPv4_2,$IPv4_1:$IPv6_3,$IPv4_3,$IPv6_2:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT

	mgslist="$IPv4_2,$IPv6_1,$IPv4_2,$IPv4_1:$IPv6_3,$IPv4_3:$IPv6_2\
,$IPv6_1,$IPv4_2,$IPv4_1:$IPv6_3,$IPv4_3:$IPv6_2,$IPv6_1,$IPv4_2\
,$IPv4_1:$IPv6_3,$IPv4_3:$IPv6_2,$IPv6_1,$IPv4_2,$IPv4_1:$IPv6_3\
,$IPv4_3:$IPv6_2,$IPv6_1,$IPv4_2,$IPv4_1:$IPv6_3,$IPv4_3:$IPv6_2\
:$mgs_HOST"
	mount -t lustre $mgslist:/$FSNAME $MOUNT ||
		error "mount failed with $mgslist:/$FSNAME $MOUNT"
	umount $MOUNT
}
run_test 153b "added IPv6 NID support"

test_153c() {
	reformat_and_config

	start_mds || error "MDS start failed"
	start_ost || error "OST start failed"

	local nid=$($LCTL list_nids | grep ${NETTYPE} | head -n1)
	local net=${nid#*@}
	local fake_pnid="192.168.252.112@${net}"
	local fake_failover="192.168.252.113@${net}:192.168.252.115@${net}"
	local nids_and_failover="$fake_pnid:$fake_failover"
	local period=0
	local pid
	local rc

	umount_client $MOUNT
	mount -t lustre $nids_and_failover:/lustre $MOUNT &
	pid=$!
	while (( period < 30 )); do
		[[ -n "$(ps -p $pid -o pid=)" ]] || break
		echo "waiting for mount ..."
		sleep 5
		period=$((period + 5))
	done
	$LCTL get_param mgc.MGC${fake_pnid}.import | grep "sec_ago"
	conn=$($LCTL get_param mgc.MGC${fake_pnid}.import |
		awk '/connection_attempts:/ {print $2}')
	echo "connection attempts: $conn"
	(( conn > 2)) || error "too few connection attempts"
	echo "Waiting for mount to fail"
	wait $pid
	cleanup || error "cleanup failed with rc $?"
}
run_test 153c "don't stuck on unreached NID"

test_154() {
	[ "$mds1_FSTYPE" == "ldiskfs" ] || skip "ldiskfs only test"
	(( $MDS1_VERSION >= $(version_code 2.15.63.1) )) ||
		skip "Need MDS version at least 2.15.63.1"
	local mdt1=$(mdsdevname 1)
	local cmd
	local parentfid
	local dotdotfid
	local ino

	reformat
	setupall

	# create rename test dir on MDT0000 to simplify later debugfs checks
	test_mkdir -c 1 -i 0 $DIR/$tdir || error "mkdir $tdir failed"
	test_mkdir -c 1 -i 0 $DIR/$tdir.tgt || error "mkdir $tdir.tgt failed"

	for name in dx_dir dirent empty; do
		test_mkdir -c 1 -i 0 $DIR/$tdir.$name ||
			error "mkdir $tdir.$name failed"
	done

	# make this directory large enough to htree split
	createmany -o $DIR/$tdir.dx_dir/$tfile.longfilename 128
	# put 2 entries after dotdot in this directory
	createmany -o $DIR/$tdir.dirent/$tfile.longfilename 2

	for name in dx_dir dirent empty; do
		mv $DIR/$tdir.$name $DIR/$tdir || error "mv $tdir.$name failed"
	done

	parentfid="fid:$($LFS path2fid $DIR/$tdir)"
	echo "==target parent FID: $parentfid=="

	stopall

	# check that ".." FID is updated during normal operation
	echo "==debugfs before backup=="
	for name in dx_dir dirent empty; do
		cmd="debugfs -c -R 'stat ROOT/$tdir/$tdir.$name' $mdt1"
		do_facet mds1 "$cmd" ||
			error "debugfs stat before backup failed"
		cmd="debugfs -c -R 'ls -lD ROOT/$tdir/$tdir.$name' $mdt1"
		do_facet mds1 "$cmd" ||
			error "debugfs before backup $name failed"
		dotdotfid=$(do_facet mds1 "$cmd" |& awk '/fid:.+\.\./ { print $9 }')
		[[ "$dotdotfid" == "$parentfid" ]] ||
			error "parent '$parentfid' != dotdot '$dotdotfid' on $name"
	done

	for ((i = 1; i <= $MDSCOUNT; i++ )); do
		mds_backup_restore mds$i ||
			error "Backup/restore on mds$i failed"
	done

	setupall

	# verify that rename of the restored directory updates the
	# ".." entry in the directory with the parent FID
	echo "==pre-rename parent/.. inodes=="
	for name in dx_dir dirent empty; do
		ls -dial $DIR/$tdir $DIR/$tdir/$tdir.$name/.. ||
			error "ls on original dirs failed"
		ino=($(stat -c "%i" $DIR/$tdir $DIR/$tdir/$tdir.$name/..))
		(( ${ino[0]} == ${ino[1]} )) ||
			error "ino $DIR/$tdir ${ino[0]} != $tdir.$name/.. ${ino[1]}"
	done

	for name in dx_dir dirent empty; do
		mv $DIR/$tdir/$tdir.$name $DIR/$tdir.tgt ||
			error "mv $tdir.$name failed"
	done

	echo "==post-rename parent/.. inodes=="
	for name in dx_dir dirent empty; do
		ls -dial $DIR/$tdir.tgt $DIR/$tdir.tgt/$tdir.$name/.. ||
			error "ls on renamed dirs failed"
		ino=($(stat -c "%i" $DIR/$tdir.tgt $DIR/$tdir.tgt/$tdir.$name/..))
		(( ${ino[0]} == ${ino[1]} )) ||
			error "ino $DIR/$tdir.tgt ${ino[0]} != $tdir.$name/.. ${ino[1]}"
	done

	parentfid="fid:$($LFS path2fid $DIR/$tdir.tgt)"
	echo "==target parent FID: $parentfid=="

	stopall

	for name in dx_dir dirent empty; do
		echo "==post-rename .$name should have '$parentfid ..'=="
		cmd="debugfs -c -R 'stat ROOT/$tdir.tgt/$tdir.$name' $mdt1"
		do_facet mds1 "$cmd" ||
			error "debugfs stat after rename failed"
		cmd="debugfs -c -R 'ls -lD ROOT/$tdir.tgt/$tdir.$name' $mdt1"
		do_facet mds1 "$cmd" ||
			error "debugfs ls .$name after rename failed"
		dotdotfid=$(do_facet mds1 "$cmd" |& awk '/fid:.+\.\./ { print $9 }')
		[[ "$dotdotfid" == "$parentfid" ]] ||
			error "parent '$parentfid' != dotdot '$dotdotfid' on $name"
	done

	FSCK_MAX_ERR=0 run_e2fsck $(facet_active_host mds1) $mdt1 -n ||
		error "e2fsck returned $?"
}
run_test 154 "expand .. on rename after MDT backup restore"

test_155() {
	(( OST1_VERSION >= $(version_code 2.16.50.134) )) ||
		skip "Need OST version at least 2.16.50.134"

	reformat_and_config
	setupall

	rm -rf $DIR/$tdir
	mkdir_on_mdt0 $DIR/$tdir
	$LFS setstripe -c 1 -i 0 $DIR/$tdir

	force_new_seq mds1
	touch $DIR/$tdir/$tfile
	local seq1=$($LFS getstripe --yaml $DIR/$tdir/$tfile |
		     awk -F ':' '/l_fid:/ {print $2}' | tr -d [:blank:])

	stopall
	setupall

	force_new_seq mds1
	touch $DIR/$tdir/${tfile}2
	local seq2=$($LFS getstripe --yaml $DIR/$tdir/${tfile}2 |
		     awk -F ':' '/l_fid:/ {print $2}' | tr -d [:blank:])

	(( seq2 == seq1 + 1 )) || error "gap in seq: old $seq1 new $seq2"
}
run_test 155 "gap in seq allocation from ofd after restarting"

cleanup_156() {
	zconf_umount_clients $CLIENTS $MOUNT ||
	    error "unable to umount clients $CLIENTS"
}

test_156() {
	local nid
	local root_fid_export
	local root_fid_client

	(( MDS1_VERSION >= $(version_code 2.16.57) )) ||
		skip "Need MDS version at least 2.16.57"

	reformat
	setupall
	stack_trap cleanup_156 EXIT

	nid=$($LCTL list_nids | head -1 | sed  "s/\./\\\./g")
	local_mode && nid="0@lo"

	# check root_fid on mount of export and consistent with client
	root_fid_client=$($LFS path2fid $MOUNT | tr -d '[]')
	[[ -n $root_fid_client ]] || error "root_fid_client not set (1)"

	root_fid_export=$(do_facet mds1 \
		"$LCTL get_param mdt.${FSNAME}*.exports.${nid}.export | \
		 awk '/root_fid/ { print \\\$2 }'")
	[[ -n $root_fid_export ]] || error "root_fid_export not set (1)"

	echo "(1) root_fid_export: $root_fid_export"
	echo "(1) root_fid_client: $root_fid_client"

	[[ "$root_fid_export" == "$root_fid_client" ]] ||
		error "export $root_fid_export != client $root_fid_client (1)"

	# check root_fid on subdir mount of export is and consistent with client
	mkdir $MOUNT/$tdir
	root_fid_client=$($LFS path2fid $MOUNT/$tdir | tr -d '[]')
	[[ -n $root_fid_client ]] || error "root_fid_client not set (2)"

	zconf_umount_clients $CLIENTS $MOUNT ||
	    error "unable to umount clients $CLIENTS"

	FILESET=/$tdir zconf_mount_clients $CLIENTS "${MOUNT}" ||
	    error "unable to mount clients $CLIENTS"

	root_fid_export=$(do_facet mds1 \
		"$LCTL get_param mdt.${FSNAME}*.exports.${nid}.export | \
		 awk '/root_fid/ { print \\\$2 }'")
	[[ -n $root_fid_export ]] || error "root_fid_export not set (2)"

	echo "(2) root_fid_export: $root_fid_export"
	echo "(2) root_fid_client: $root_fid_client"

	[[ "$root_fid_export" == "$root_fid_client" ]] ||
		error "export $root_fid_export != client $root_fid_client (2)"
}
run_test 156 "root_fid on export consistent with client mount"

test_160() {
	((OST1_VERSION >= $(version_code 2.16.55) )) ||
		skip "need OST >= 2.16.55 to have MGC with all failovers"

	stopall
	reformat

	local mgs_nid=$(do_facet mgs $LCTL list_nids | head -1)
	local failover_nid="192.168.252.160@${NETTYPE}"
	local mgs_nodes=$mgs_nid:$failover_nid
	local tmp_mnt="$TMP/lmount"
	local count;

	start_mgsmds
	start_ost

	stack_trap "cleanup; reformat"

	do_facet mgs "mkdir -p $tmp_mnt"
	do_facet mgs "$MOUNT_CMD $mgs_nodes:/$FSNAME $tmp_mnt" ||
		error "Fail to mount local client on MGS"
	do_facet mgs "umount $tmp_mnt"

	do_facet mgs "$LCTL get_param mgc.MGC${mgs_nid}.import"
	count=$(do_facet mgs "$LCTL get_param mgc.MGC${mgs_nid}.import" |
		grep -c "$failover_nid")
	(( count > 0 )) ||
		error "MGC misses failover MGS nid"
}
run_test 160 "MGC updates failnodes from all participants"

test_161() {
	setup

	local custom_mgsname="test-mgs-custom"

	umount $MOUNT

	# Test 1: Verify explicit "-o mgsname=MGSNAME" appears in /proc/mounts,
	# df, mount
	mount -t lustre -o mgsname=$custom_mgsname $MGSNID:/$FSNAME $MOUNT ||
		error "mount with mgsname=$custom_mgsname failed"

	# Verify mgsname appears in /proc/mounts
	grep "$custom_mgsname:/$FSNAME" /proc/mounts ||
		error "mgsname not found in /proc/mounts"

	# Verify mgsname appears in mount output
	mount | grep "$custom_mgsname:/$FSNAME.*$MOUNT" ||
		error "mgsname not found in mount output"

	# Verify df command works
	df $MOUNT > /dev/null || error "df failed with mgsname"

	umount $MOUNT
	wait_update_facet client "mount | grep ' $MOUNT '" "" 5 ||
		error "failed to unmount $MOUNT"

	# Test 2: Verify mgsname generation when mounting without mgsname option
	# When mounting with hostname like "test-mgs@tcp:/lustre", it should
	# automatically generate mgsname and show "test-mgs@tcp:/lustre" in
	# mount, df, and /proc/mounts output

	# Extract IP and network type from MGSNID
	local mgs_ip=$(echo $MGSNID | cut -d'@' -f1)
	local mgs_nettype=$(echo $MGSNID | cut -d'@' -f2 | cut -d',' -f1)
	local test_hostname="test-mgs-auto"

	# Check if hostname is already resolvable before adding to /etc/hosts
	if getent hosts $test_hostname >/dev/null 2>&1 ||
		ping -c1 -W1 $test_hostname >/dev/null 2>&1; then
		echo "Hostname $test_hostname is already resolvable"
	else
		echo "Add temp hostname to /etc/hosts: $mgs_ip $test_hostname"
		local tmphosts=$(mktemp)
		cp -a /etc/hosts $tmphosts
		echo "$mgs_ip $test_hostname" >> /etc/hosts
		# Ensure temp hostname is removed even if test fails
		stack_trap "cat $tmphosts >/etc/hosts; rm -f $tmphosts" EXIT
	fi

	# Mount using the hostname to trigger automatic mgsname generation
	mount -t lustre $test_hostname@$mgs_nettype:/$FSNAME $MOUNT ||
		error "mount with hostname $test_hostname@$mgs_nettype failed"

	# Check if automatic mgsname was generated and appears in /proc/mounts
	local device_in_proc=$(awk -v mount="$MOUNT" '$2 == mount {print $1}' \
			       /proc/mounts)

	# The auto-generated mgsname should show the hostname, not the IP
	local expected_device="$test_hostname@$mgs_nettype:/$FSNAME"
	echo "Test hostname: $test_hostname@$mgs_nettype"
	echo "Expected device: $expected_device"
	echo "Device in /proc/mounts: $device_in_proc"

	[[ "$device_in_proc" == "$expected_device" ]] ||
		error "device '$device_in_proc' != expected '$expected_device'"

	# Verify hostname also appears in mount output
	mount | grep "$test_hostname@$mgs_nettype:/$FSNAME.*$MOUNT" ||
		error "hostname not found in mount output"
	cleanup
}
run_test 161 "test '-o mgsname' option"

test_162() {
	(( MGS_VERSION >= $(version_code 2.17.50) )) ||
		skip "Need MGS version at least 2.17.50"
	local_mode && skip_env "skip in local mode"
	local mhost

	if ! combined_mgs_mds ; then
		mhost=$(facet_active_host mgs)
	else
		mhost=$(facet_active_host mdt1)
	fi

	[[ ! $(local_node $mhost) ]]  ||
		skip "Need client and MGS on different nodes"

	setup
	wait_clients_import_state ${CLIENTS:-$HOSTNAME} mds1 FULL

	local OST1_NID=$(do_facet ost1 $LCTL list_nids | head -1)
	local MDS_NID=$(do_facet $SINGLEMDS $LCTL list_nids | head -1)

	#stop all devices on the same node
	for ((num=1; num <= $MDSCOUNT; num++)); do
		[[ "$mhost" != "$(facet_active_host mdt$num)" ]] ||
			stop_mdt $num
	done
	[[ "$mhost" != "$(facet_active_host ost1)" ]] ||
		stop_ost

	if ! combined_mgs_mds ; then
		stop_mgs
		start_mgs "-o noclient"
	else
		start_mdt 1 "-o nosvc,noclient"
	fi
	stack_trap "do_facet mgs $LCTL dl" ERR

	local FAKE_NIDS="192.168.0.112@tcp1,192.168.0.112@tcp2"
	local FAKE_FAILOVER="192.168.0.113@tcp1,192.168.0.113@tcp2"
	local NIDS_AND_FAILOVER="$MDS_NID,$FAKE_NIDS:$FAKE_FAILOVER"
	echo "set NIDs with failover"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 $NIDS_AND_FAILOVER ||
		error "replace nids failed"

	echo "replace MDS nid"
	do_facet mgs $LCTL replace_nids $FSNAME-MDT0000 $MDS_NID ||
		error "replace nids failed"

	if ! combined_mgs_mds ; then
		stop_mgs
		start_mgs
	else
		stop_mdt 1
	fi

	#start all devices on the same node
	for ((num=1; num <= $MDSCOUNT; num++)); do
		[[ "$mhost" != "$(facet_active_host mdt$num)" ]] ||
			start_mdt $num
	done
	[[ "$mhost" != "$(facet_active_host ost1)" ]] ||
		start_ost

	wait_clients_import_state ${CLIENTS:-$HOSTNAME} mds1 FULL

	check_mount || error "error after nid replace"
	cleanup || error "cleanup failed"
	reformat_and_config
}
run_test 162 "replace nids with -o noclient"

cleanup_164() {
	# Ensure all test mounts are cleaned up
	for i in {1..5}; do
		umount_client $MOUNT/$tdir.$i 2>/dev/null || true
	done
	rmdir $MOUNT/$tdir.{1..5} 2>/dev/null || true

	cleanup
}

test_164() {
	(( $MDS1_VERSION >= $(version_code 2.17.50) )) ||
		skip "Need MDS version >= 2.17.50"

	formatall
	setup

	mkdir -p $MOUNT/$tdir.{1..5} ||
		error "mkdir -p $MOUNT/$tdir.{1..5} failed"

	stack_trap cleanup_164

	# Save expected_clients after new mounti
	local orig=$(do_facet mds1 "$LCTL get_param expected_clients")
	echo "after initial mount: $orig"

	do_facet mds1 "$LCTL set_param expected_clients=1"
	stack_trap "do_facet mds1 $LCTL set_param $orig"

	# Mount additional clients
	for i in {1..5}; do
		mount_client $MOUNT/$tdir.$i ||
			error "mount $MOUNT/$tdir.$i failed"
	done

	# Check max_clients after mounting additional clients
	local max_c=$(do_facet mds1 "$LCTL get_param -n expected_clients")
	echo "expected_clients after mounting 5 additional clients: $max_c"

	# Unmount additional clients
	for i in {1..5}; do
		umount_client $MOUNT/$tdir.$i ||
			error "failed to unmount $MOUNT/$tdir.$i"
	done

	local final_max=$(do_facet mds1 "$LCTL get_param -n expected_clients")
	echo "expected_clients after unmount: $final_max"

	# Verify the parameter persisted after unmount
	(( $final_max == $max_c )) ||
		error "expected_clients should persist after unmount: $final_max != $max_c"

	local exp_c=$((5 + $MDSCOUNT))
	(( $max_c == $exp_c )) ||
		error "expected_clients should be $exp_c, got $max_c"
}
run_test 164 "test expected_clients parameter and max client tracking"

cleanup_200() {
	local modopts=$1
	stopall
	$LUSTRE_RMMOD
	[[ -z $modopts ]] || MODOPTS_LIBCFS=$modopts
}

test_200a() {
	cleanup_200

	local cpus=$(lscpu | awk '/^CPU.s.:/ {print $NF}')
	local old_modopts=$MODOPTS_LIBCFS
	stack_trap "cleanup_200 $old_modopts"

	MODOPTS_LIBCFS="cpu_npartitions=$cpus"

	load_modules_local libcfs
	$LCTL get_param -n cpu_partition_table

	local expected=$(cat /sys/module/libcfs/parameters/cpu_npartitions)
	local result=$($LCTL get_param -n cpu_partition_table | wc -l)

	(( $result == $expected )) ||
		error "CPU partitions not $expected, found: $result"
}
run_test 200a "check CPU partitions"

test_200b() {
	cleanup_200

	local cpus=$(lscpu | awk '/^CPU.s.:/ {print $NF}')
	local nodes=$(lscpu | awk '/NUMA node.s.:/ {print $NF}')
	local old_modopts=$MODOPTS_LIBCFS
	stack_trap "cleanup_200 $old_modopts"

	local pattern="0[$(lscpu | awk '/CPU.s. list:/ {print $NF}')]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table
	local expected=cpus
	local table=$($LCTL get_param -n cpu_partition_table)
	# ignore partition num and ':'
	local actual=$(( $(awk '{print NF; exit}' <<< $table) - 2 ))

	(( expected == actual )) || {
		echo -e "layout wrong:\n$table"
		error "partition 0 is missing CPUs from pattern: '$pattern'"
	}

	(( $(echo $table | wc -l) == 1 )) || {
		echo -e "layout wrong\n$table"
		error "layout has too many partitions from pattern: '$pattern'"
	}

	(( cpus >= 4 )) || skip "need at least 4 cpu cores"
	cleanup

	pattern="0[1-2]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	$LCTL get_param -n cpu_partition_table
	expected="0	: 1 2"
	table=$($LCTL get_param -n cpu_partition_table)

	[[ $table == $expected ]] ||
		error "CPU pattern not $expected, found: $table"
}
run_test 200b "set CPU pattern using core selection"

test_200c() {
	cleanup_200

	local cpus=$(lscpu | awk '/^CPU.s.:/ {print $NF}')
	local nodes=$(lscpu | awk '/NUMA node.s.:/ {print $NF}')

	local old_modopts=$MODOPTS_LIBCFS
	stack_trap "cleanup_200 $old_modopts"

	local pattern="N"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table
	local expected=$nodes
	local table=$($LCTL get_param -n cpu_partition_table)
	local actual=$(echo $table | wc -l)

	(( actual == expected )) ||
		error "CPU partitions not $expected, found: $actual"

	cleanup

	pattern="0[$(lscpu | awk '/^NUMA node0 CPU.s.:/ {print $NF}')]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	expected=$($LCTL get_param -n cpu_partition_table)

	cleanup

	pattern="N 0[0]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	$LCTL get_param -n cpu_partition_table
	local table=$($LCTL get_param -n cpu_partition_table)

	[[ $table == $expected ]] ||
		error "CPU pattern not $expected, found: $table"

	cleanup

	local partitions=1
	(( nodes < 2 )) || partitions=$((nodes - 1))
	pattern="N"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\" cpu_npartitions=$partitions"

	load_modules_local libcfs
	$LCTL get_param -n cpu_partition_table
	local table=$($LCTL get_param -n cpu_partition_table)
	actual=$(echo $table | wc -l)
	(( actual == partitions )) ||
		error "setting npartitions=$partitions did not override NUMA layout"
}
run_test 200c "set CPU pattern using NUMA node layout"

test_200d() {
	cleanup_200

	local cpus=$(lscpu | awk '/^CPU.s.:/ {print $NF}')
	local nodes=$(lscpu | awk '/NUMA node.s.:/ {print $NF}')
	local parts=$((cpus / 2))

	local old_modopts=$MODOPTS_LIBCFS
	stack_trap "cleanup_200 $old_modopts"

	local full_cpu_count=0
	local excluded_count=0

	# First, get the full table
	MODOPTS_LIBCFS="cpu_npartitions=$parts"

	load_modules_local libcfs
	echo "full_table:"
	$LCTL get_param -n cpu_partition_table

	local full_table=()
	while read -r line; do
		full_table+=("$line")
		full_cpu_count=$((full_cpu_count + $(echo $line | wc -w) - 2))
	done < <($LCTL get_param -n cpu_partition_table)

	cleanup

	# Now, set the pattern to exclude CPU 1
	pattern="X[1]"
	MODOPTS_LIBCFS="cpu_npartitions=$parts cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	echo "table with CPU 1 excluded:"
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table

	local table=()
	while read -r line; do
		table+=("$line")
		excluded_count=$((excluded_count + $(echo $line | wc -w) - 2))
	done < <($LCTL get_param -n cpu_partition_table)

	# Check if CPU 1 is excluded
	for line in "${table[@]}"; do
		! [[ "$line" =~ " 1 " ]] ||
			error "CPU 1 was not excluded with pattern: $pattern"
	done

	# Check if only CPU 1 is excluded
	(( excluded_count == full_cpu_count - 1 )) ||
		error "More than one CPU was excluded with pattern: $pattern"

	cleanup

	# Now, set the pattern to exclude CPU n-1
	pattern="X[$((cpus - 1))]"
	MODOPTS_LIBCFS="cpu_npartitions=$parts cpu_pattern=\"$pattern\""

	load_modules_local libcfs ||
		error "failed to load modules with pattern: $pattern"
	echo "table with last CPU excluded:"
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table

	cleanup

	full_cpu_count=0
	excluded_count=0

	# First, get the full table
	pattern="N"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	echo "full_table:"
	$LCTL get_param -n cpu_partition_table

	full_table=()
	while read -r line; do
		full_table+=("$line")
		full_cpu_count=$((full_cpu_count + $(echo $line | wc -w) - 2))
	done < <($LCTL get_param -n cpu_partition_table)

	cleanup

	# Now, set the pattern to exclude CPU 1
	pattern="N X[1]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	echo "table with CPU 1 excluded:"
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table

	table=()
	while read -r line; do
		table+=("$line")
		excluded_count=$((excluded_count + $(echo $line | wc -w) - 2))
	done < <($LCTL get_param -n cpu_partition_table)

	# Check if CPU 1 is excluded
	cpu_1_found=false
	for line in "${table[@]}"; do
		[[ "$line" =~ " 1 " ]] && cpu_1_found=true
	done
	$cpu_1_found && error "CPU 1 was not excluded with pattern: $pattern"

	# Check if only CPU 1 is excluded
	(( excluded_count == full_cpu_count - 1 )) ||
		error "More than one CPU was excluded with pattern: $pattern"

	cleanup

	# Now, set the pattern to exclude CPU n-1
	pattern="N X[$((cpus - 1))]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs ||
		error "failed to load modules with pattern: $pattern"
	echo "table with last CPU excluded:"
	grep . /sys/module/libcfs/parameters/cpu*
	$LCTL get_param -n cpu_partition_table

	cleanup
}
run_test 200d "set CPU pattern to exclude only CPU 1"

test_200e() {
	cleanup_200

	local cpus=$(lscpu | awk '/^CPU.s.:/ {print $NF}')
	local nodes=$(lscpu | awk '/NUMA node.s.:/ {print $NF}')
	local npartitions=$((cpus / 2))
	local expected
	local actual
	local excluded
	local partition

	local old_modopts=$MODOPTS_LIBCFS
	stack_trap "cleanup_200 $old_modopts"

	# N C[0]
	pattern="N"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	echo "full_table:"
	$LCTL get_param -n cpu_partition_table

	local full_table=()
	while read -r line; do
		full_table+=("$line")
	done < <($LCTL get_param -n cpu_partition_table)
	(( $($LCTL get_param -n cpu_partition_table |\
	     awk '/\<0\>.*:/ {print NF - 3; exit}') > 0 )) ||
		skip "need at least 2 cores in each CPT to exclude one"

	cleanup

	pattern="N C[0]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\""

	load_modules_local libcfs
	grep . /sys/module/libcfs/parameters/cpu*
	echo "table with npartitions=$npartitions:"
	$LCTL get_param -n cpu_partition_table

	local table=()
	while read -r line; do
		table+=("$line")
	done < <($LCTL get_param -n cpu_partition_table)

	for (( i = 0; i < ${#table[@]}; i++ )); do
		expected=$(echo ${full_table[$i]} | awk '{print NF - 3; exit}')
		actual=$(echo ${table[$i]} | awk '{print NF - 2; exit}')

		(( actual == expected )) ||
			error "CPU count not $expected, found: $actual"

		excluded=$(echo ${full_table[$i]} | awk '{print $3; exit}')
		partition=$(echo ${table[$i]} | awk '{print $3; exit}')

		! [[ "$partition" =~ "$excluded" ]] || {
			echo -e "layout wrong:\n$table"
			error "excluded the wrong CPU with pattern: $pattern"
		}
	done

	cleanup

	# C[0] with npartitions
	MODOPTS_LIBCFS="cpu_npartitions=$npartitions"

	load_modules_local libcfs
	echo "full_table:"
	$LCTL get_param -n cpu_partition_table

	full_table=()
	while read -r line; do
		full_table+=("$line")
	done < <($LCTL get_param -n cpu_partition_table)
	(( $($LCTL get_param -n cpu_partition_table |\
	     awk '/\<0\>.*:/ {print NF - 3; exit}') > 0 )) ||
		skip "need at least 2 cores in each CPT to exclude one"

	cleanup

	pattern="C[0]"
	MODOPTS_LIBCFS="cpu_pattern=\"$pattern\" cpu_npartitions=$npartitions"

	load_modules_local libcfs
	grep . /sys/module/libcfs/parameters/cpu*
	echo "table with npartitions=$npartitions:"
	$LCTL get_param -n cpu_partition_table

	table=()
	while read -r line; do
		table+=("$line")
	done < <($LCTL get_param -n cpu_partition_table)

	for (( i = 0; i < ${#table[@]}; i++ )); do
		expected=$(echo ${full_table[$i]} | awk '{print NF - 3; exit}')
		actual=$(echo ${table[$i]} | awk '{print NF - 2; exit}')

		(( actual == expected )) ||
			error "CPU count not $expected, found: $actual"

		excluded=$(echo ${full_table[$i]} | awk '{print $3; exit}')
		partition=$(echo ${table[$i]} | awk '{print $3; exit}')

		! [[ "$partition" =~ "$excluded" ]] || {
			echo -e "layout wrong:\n$table"
			error "excluded the wrong CPU with pattern: $pattern"
		}
	done
}
run_test 200e "set CPU pattern using relative core exclusion"

#
# (This was sanity/802a)
#
saved_MGS_MOUNT_OPTS=$MGS_MOUNT_OPTS
saved_MDS_MOUNT_OPTS=$MDS_MOUNT_OPTS
saved_OST_MOUNT_OPTS=$OST_MOUNT_OPTS
saved_MOUNT_OPTS=$MOUNT_OPTS

cleanup_802a() {
	stopall
	MGS_MOUNT_OPTS=$saved_MGS_MOUNT_OPTS
	MDS_MOUNT_OPTS=$saved_MDS_MOUNT_OPTS
	OST_MOUNT_OPTS=$saved_OST_MOUNT_OPTS
	MOUNT_OPTS=$saved_MOUNT_OPTS
	setupall
}

test_802a() {
	[[ $mds1_FSTYPE = zfs ]] || skip "ZFS specific test"
	[[ $MDS1_VERSION -lt $(version_code 2.9.55) ]] ||
	[[ $OST1_VERSION -lt $(version_code 2.9.55) ]] &&
		skip "Need server version at least 2.9.55"

	[[ $ENABLE_QUOTA ]] && skip "Quota enabled for read-only test"

	# Reset before starting
	stopall
	setupall

	mkdir $DIR/$tdir || error "(1) fail to mkdir"

	cp $LUSTRE/tests/test-framework.sh $DIR/$tdir/ ||
		error "(2) Fail to copy"

	stack_trap cleanup_802a EXIT

	# sync by force before remount as readonly
	sync; sync_all_data; sleep 3; sync_all_data

	stopall

	MGS_MOUNT_OPTS=$(csa_add "$MGS_MOUNT_OPTS" -o rdonly_dev)
	MDS_MOUNT_OPTS=$(csa_add "$MDS_MOUNT_OPTS" -o rdonly_dev)
	OST_MOUNT_OPTS=$(csa_add "$OST_MOUNT_OPTS" -o rdonly_dev)

	echo "Mount the server as read only"
	setupall server_only || error "(3) Fail to start servers"

	echo "Mount client without ro should fail"
	mount_client $MOUNT &&
		error "(4) Mount client without 'ro' should fail"

	echo "Mount client with ro should succeed"
	MOUNT_OPTS=$(csa_add "$MOUNT_OPTS" -o ro)
	mount_client $MOUNT ||
		error "(5) Mount client with 'ro' should succeed"

	echo "Modify should be refused"
	touch $DIR/$tdir/guard && error "(6) Touch should fail under ro mode"

	echo "Read should be allowed"
	diff $LUSTRE/tests/test-framework.sh $DIR/$tdir/test-framework.sh ||
		error "(7) Read should succeed under ro mode"
}
run_test 802a "simulate readonly device"

if ! combined_mgs_mds ; then
	stop mgs
fi

cleanup_gss

# restore the values of MDSSIZE, MGSSIZE, and OSTSIZE
MDSSIZE=$STORED_MDSSIZE
MGSSIZE=$STORED_MGSSIZE
OSTSIZE=$STORED_OSTSIZE
reformat

complete_test $SECONDS
check_and_cleanup_lustre

exit_status
