== sanity test 248c: verify whole file read behavior ===== 03:02:14 (1726124534)
llite.lustre-ffff88012c1b2800.read_ahead_stats=c
striped dir -i0 -c2 -H fnv_1a_64 /mnt/lustre/d248c.sanity
llite.lustre-ffff88012c1b2800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 38.7 seconds
llite.lustre-ffff88012c1b2800.read_ahead_stats=
snapshot_time             1726124536.833717603 secs.nsecs
start_time                1726124534.893567952 secs.nsecs
elapsed_time              1.940149651 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-ffff88012c1b2800.read_ahead_stats=clear
llite.lustre-ffff88012c1b2800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 37.2 seconds
llite.lustre-ffff88012c1b2800.read_ahead_stats=
snapshot_time             1726124539.050222463 secs.nsecs
start_time                1726124536.838640502 secs.nsecs
elapsed_time              2.211581961 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-ffff88012c1b2800.max_read_ahead_whole_mb=64