== sanity test 248c: verify whole file read behavior ===== 02:52:44 (1747810364)
llite.lustre-ffff88012abe0000.read_ahead_stats=c
striped dir -i0 -c2 -H fnv_1a_64 /mnt/lustre/d248c.sanity
llite.lustre-ffff88012abe0000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 33.3 seconds
llite.lustre-ffff88012abe0000.read_ahead_stats=
snapshot_time             1747810367.489163224 secs.nsecs
start_time                1747810365.337026659 secs.nsecs
elapsed_time              2.152136565 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
llite.lustre-ffff88012abe0000.read_ahead_stats=clear
llite.lustre-ffff88012abe0000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 33.4 seconds
llite.lustre-ffff88012abe0000.read_ahead_stats=
snapshot_time             1747810369.910463674 secs.nsecs
start_time                1747810367.492551034 secs.nsecs
elapsed_time              2.417912640 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff88012abe0000.max_read_ahead_whole_mb=4