-----============= acceptance-small: sanityn ============----- Fri Sep 18 15:42:49 EDT 2026
MGS_OS_ID_LIKE=rhel centos fedora rocky
MGS_OS_VERSION_ID=8.10
MGS_OS_ID=rocky
MGS_OS_VERSION_CODE=134873088
MDS1_OS_VERSION_ID=8.10
MDS1_OS_VERSION_CODE=134873088
MDS1_OS_ID_LIKE=rhel centos fedora rocky
MDS1_OS_ID=rocky
OST1_OS_VERSION_CODE=134873088
OST1_OS_ID_LIKE=rhel centos fedora rocky
OST1_OS_VERSION_ID=8.10
OST1_OS_ID=rocky
CLIENT_OS_ID=rocky
CLIENT_OS_VERSION_CODE=134873088
CLIENT_OS_VERSION_ID=8.10
CLIENT_OS_ID_LIKE=rhel centos fedora rocky
oleg338-server: ls: cannot access '/home/green/git/lustre-release/lustre/tests/except/sanityn.*ex': No such file or directory
excepting tests: 40a
skipping tests SLOW=no: 33a
=== sanityn: start setup 15:43:11 (1789760591) ===
Starting client oleg338-client.virtnet:  -o user_xattr,flock 192.168.203.138@tcp:/lustre /mnt/lustre2
Mount client oleg338-client.virtnet: mount -t lustre -o user_xattr,flock 192.168.203.138@tcp:/lustre /mnt/lustre2
Started clients oleg338-client.virtnet: 
192.168.203.138@tcp:/lustre on /mnt/lustre2 type lustre (rw,flock,checksum,encrypt,lazystatfs,lruresize,nolock,statfs_project,nosync_on_close,nouser_fid2path,user_xattr,verbose)
oleg338-client.virtnet: executing check_config_client /mnt/lustre
oleg338-client.virtnet: Checking config lustre mounted on /mnt/lustre
Checking servers environments
Checking clients oleg338-client.virtnet environments
Using TIMEOUT=20
osc.lustre-OST0000-osc-ffff9c6f8585f000.idle_timeout=debug
osc.lustre-OST0000-osc-ffff9c6f91f6e000.idle_timeout=debug
osc.lustre-OST0001-osc-ffff9c6f8585f000.idle_timeout=debug
osc.lustre-OST0001-osc-ffff9c6f91f6e000.idle_timeout=debug
disable quota as required
oleg338-server: oleg338-server.virtnet: executing set_default_debug vfstrace rpctrace dlmtrace neterror ha config ioctl super lfsck all
=== sanityn: finish setup 15:43:54 (1789760634) ===
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0386368 s, 27.1 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [true]
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [touch] [/mnt/lustre/d0_runas_test/f8468]

== sanityn test 77jb: check TBF-UID/GID NRS policy on files that don't belong to us ========================================================== 15:43:58 (1789760638)
jobid_var=procname_uid
ost.OSS.ost_io.nrs_policies=tbf uid
ost.OSS.ost_io.nrs_tbf_rule=start ost_uid uid={500} rate=5
running as uid/gid/euid/egid 0/500/0/500, groups: 500
 [touch] [/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet]
running as uid/gid/euid/egid 0/500/0/500, groups: 500
 [touch] [/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet]
running as uid/gid/euid/egid 0/500/0/500, groups: 500
 [chmod] [777] [/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet] [/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet]
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet] [bs=1M] [count=16]
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 1.33564 s, 12.6 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_w]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.121654 s, 8.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.120759 s, 8.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.123784 s, 8.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.161663 s, 6.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.189682 s, 5.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.072046 s, 14.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.256994 s, 4.1 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0843534 s, 12.4 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.275656 s, 3.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.244731 s, 4.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.282373 s, 3.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.208738 s, 5.0 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.314121 s, 3.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.314097 s, 3.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.30902 s, 3.4 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.312992 s, 3.4 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_r]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.133878 s, 7.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.135879 s, 7.7 MB/s
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.145364 s, 7.2 MB/s1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.141783 s, 7.4 MB/s

1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0539033 s, 19.5 MB/s
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.148146 s, 7.1 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0687982 s, 15.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.157324 s, 6.7 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.150061 s, 7.0 MB/s1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.154387 s, 6.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.166661 s, 6.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.158294 s, 6.6 MB/s

1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0934172 s, 11.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0945793 s, 11.1 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.170334 s, 6.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.105401 s, 9.9 MB/s
removed '/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet'
removed '/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet'
removed directory '/mnt/lustre/d77jb.sanityn'
not_under_control: 0
cpu_npartitions on ost1 is 1
running as uid/gid/euid/egid 0/500/0/500, groups: 500
 [touch] [/mnt/lustre/d77jb.sanityn/tbf]
Limited write rate: 5, read rate: 5
Verify the write rate is under TBF control
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77jb.sanityn/tbf] [bs=1M] [count=100] [oflag=direct]
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 19.8801 s, 5.3 MB/s
Write runtime is 21 s, speed is 4.761904 IOPS
Verify the read rate is under TBF control
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/mnt/lustre/d77jb.sanityn/tbf] [of=/dev/null] [bs=1M] [count=100] [iflag=direct]
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 19.9393 s, 5.3 MB/s
Read runtime is 21 s, speed is 4.761904 IOPS
cleanup_tbf /mnt/lustre/d77jb.sanityn
sleep 5 for ZFS MDS
sleep 5 for ZFS OST
Waiting for MDT destroys to complete
ost.OSS.ost_io.nrs_tbf_rule=stop ost_uid
ost.OSS.ost_io.nrs_policies=fifo
jobid_var=procname_uid
ost.OSS.ost_io.nrs_policies=tbf gid
ost.OSS.ost_io.nrs_tbf_rule=start ost_gid gid={500} rate=5
running as uid/gid/euid/egid 500/0/500/0, groups: 0
 [touch] [/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet]
running as uid/gid/euid/egid 500/0/500/0, groups: 0
 [touch] [/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet]
running as uid/gid/euid/egid 500/0/500/0, groups: 0
 [chmod] [777] [/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet] [/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet]
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet] [bs=1M] [count=16]
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 1.29548 s, 13.0 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_w]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.162766 s, 6.4 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.182775 s, 5.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.159773 s, 6.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.203886 s, 5.1 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.208217 s, 5.0 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.208197 s, 5.0 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.196477 s, 5.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.217102 s, 4.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.263502 s, 4.0 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.239366 s, 4.4 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.26104 s, 4.0 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.287643 s, 3.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.27053 s, 3.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.303282 s, 3.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.358983 s, 2.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.352246 s, 3.0 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_r]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0735828 s, 14.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0347924 s, 30.1 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0642318 s, 16.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0504308 s, 20.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0768378 s, 13.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.069535 s, 15.1 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.081747 s, 12.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0339621 s, 30.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0751353 s, 14.0 MB/s
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0574327 s, 18.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0735491 s, 14.3 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0859024 s, 12.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0306225 s, 34.2 MB/s
1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0406232 s, 25.8 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0441628 s, 23.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0517315 s, 20.3 MB/s
removed '/mnt/lustre/d77jb.sanityn/nrs_w_oleg338-client.virtnet'
removed '/mnt/lustre/d77jb.sanityn/nrs_r_oleg338-client.virtnet'
removed directory '/mnt/lustre/d77jb.sanityn'
not_under_control: 0
cpu_npartitions on ost1 is 1
running as uid/gid/euid/egid 500/0/500/0, groups: 0
 [touch] [/mnt/lustre/d77jb.sanityn/tbf]
Limited write rate: 5, read rate: 5
Verify the write rate is under TBF control
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77jb.sanityn/tbf] [bs=1M] [count=100] [oflag=direct]
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 19.9814 s, 5.2 MB/s
Write runtime is 21 s, speed is 4.761904 IOPS
Verify the read rate is under TBF control
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/mnt/lustre/d77jb.sanityn/tbf] [of=/dev/null] [bs=1M] [count=100] [iflag=direct]
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 19.9272 s, 5.3 MB/s
Read runtime is 21 s, speed is 4.761904 IOPS
cleanup_tbf /mnt/lustre/d77jb.sanityn
sleep 5 for ZFS MDS
sleep 5 for ZFS OST
Waiting for MDT destroys to complete
ost.OSS.ost_io.nrs_tbf_rule=stop ost_gid
ost.OSS.ost_io.nrs_policies=fifo
PASS 77jb (150s)

== sanityn test 77kb: Check different granular TBF type combination: jobid+opcode ========================================================== 15:46:28 (1789760788)
ost.OSS.ost_io.nrs_policies=tbf jobid+opcode
ost.OSS.ost_io.nrs_tbf_rule=start ext_w jobid={dd.500}&opcode={ost_write} rate=20
ost.OSS.ost_io.nrs_tbf_rule=start ext_r jobid={dd.500}&opcode={ost_read} rate=10
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77kb.sanityn/nrs_r_oleg338-client.virtnet] [bs=1M] [count=16]
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 0.458466 s, 36.6 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_w]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0194459 s, 53.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.058852 s, 17.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0912612 s, 11.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0570218 s, 18.4 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0635111 s, 16.5 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0554422 s, 18.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0931345 s, 11.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0561157 s, 18.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0631107 s, 16.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0961713 s, 10.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.176923 s, 5.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.202335 s, 5.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.220786 s, 4.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.22846 s, 4.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.17798 s, 5.9 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.253838 s, 4.1 MB/s
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [declare] [-a] [pids_r]
execvp fails running declare (13): Permission denied
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0442081 s, 23.7 MB/s1+0 records in
1+0 records out
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0518912 s, 20.2 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0113956 s, 92.0 MB/s

1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0592637 s, 17.7 MB/s
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0770914 s, 13.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0529386 s, 19.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0114846 s, 91.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.00255589 s, 410 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0670448 s, 15.6 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.002348 s, 447 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.00250569 s, 418 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0667169 s, 15.7 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0270135 s, 38.8 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.103371 s, 10.1 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0853611 s, 12.3 MB/s
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0200681 s, 52.3 MB/s
removed '/mnt/lustre/d77kb.sanityn/nrs_r_oleg338-client.virtnet'
removed '/mnt/lustre/d77kb.sanityn/nrs_w_oleg338-client.virtnet'
removed directory '/mnt/lustre/d77kb.sanityn'
not_under_control: 0
cpu_npartitions on ost1 is 1
Limited write rate: 20, read rate: 10
Verify the write rate is under TBF control
running as uid/gid/euid/egid 500/500/500/500, groups: 500
 [dd] [if=/dev/zero] [of=/mnt/lustre/d77kb.sanityn/tbf] [bs=1M] [count=100] [oflag=direct]