== sanity test 248c: verify whole file read behavior ===== 18:43:52 (1768261432)
llite.lustre-ffff8a0587c42800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8a0587c42800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 11.749 seconds
llite.lustre-ffff8a0587c42800.read_ahead_stats=
snapshot_time             1768261447.447956647 secs.nsecs
start_time                1768261434.887367948 secs.nsecs
elapsed_time              12.560588699 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-ffff8a0587c42800.read_ahead_stats=clear
llite.lustre-ffff8a0587c42800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 9.65018 seconds
llite.lustre-ffff8a0587c42800.read_ahead_stats=
snapshot_time             1768261459.114617506 secs.nsecs
start_time                1768261447.463965836 secs.nsecs
elapsed_time              11.650651670 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-ffff8a0587c42800.max_read_ahead_whole_mb=4