== sanity test 248c: verify whole file read behavior ===== 13:30:32 (1740681032)
llite.lustre-ffff88012eb6b800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012eb6b800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 37.8 seconds
llite.lustre-ffff88012eb6b800.read_ahead_stats=
snapshot_time             1740681034.766374491 secs.nsecs
start_time                1740681032.882891058 secs.nsecs
elapsed_time              1.883483433 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-ffff88012eb6b800.read_ahead_stats=clear
llite.lustre-ffff88012eb6b800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 37.0 seconds
llite.lustre-ffff88012eb6b800.read_ahead_stats=
snapshot_time             1740681036.944043120 secs.nsecs
start_time                1740681034.769382014 secs.nsecs
elapsed_time              2.174661106 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-ffff88012eb6b800.max_read_ahead_whole_mb=4