== sanity test 248c: verify whole file read behavior ===== 12:42:07 (1752511327)
llite.lustre-ffff891d4c2fd000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff891d4c2fd000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.50586 seconds
llite.lustre-ffff891d4c2fd000.read_ahead_stats=
snapshot_time             1752511331.435988837 secs.nsecs
start_time                1752511327.780279648 secs.nsecs
elapsed_time              3.655709189 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-ffff891d4c2fd000.read_ahead_stats=clear
llite.lustre-ffff891d4c2fd000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.47183 seconds
llite.lustre-ffff891d4c2fd000.read_ahead_stats=
snapshot_time             1752511335.426334565 secs.nsecs
start_time                1752511331.440470740 secs.nsecs
elapsed_time              3.985863825 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-ffff891d4c2fd000.max_read_ahead_whole_mb=4