== sanity test 248c: verify whole file read behavior ===== 11:34:16 (1772469256)
llite.lustre-ffff8dd6d1b04000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8dd6d1b04000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.10587 seconds
llite.lustre-ffff8dd6d1b04000.read_ahead_stats=
snapshot_time             1772469261.235659580 secs.nsecs
start_time                1772469256.887873830 secs.nsecs
elapsed_time              4.347785750 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-ffff8dd6d1b04000.read_ahead_stats=clear
llite.lustre-ffff8dd6d1b04000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.16964 seconds
llite.lustre-ffff8dd6d1b04000.read_ahead_stats=
snapshot_time             1772469266.111666941 secs.nsecs
start_time                1772469261.245029548 secs.nsecs
elapsed_time              4.866637393 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-ffff8dd6d1b04000.max_read_ahead_whole_mb=4