== sanity test 248c: verify whole file read behavior ===== 15:09:14 (1780340954)
llite.lustre-ffff8e47c5427800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8e47c5427800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.09466 seconds
llite.lustre-ffff8e47c5427800.read_ahead_stats=
snapshot_time             1780340965.797298017 secs.nsecs
start_time                1780340956.840702605 secs.nsecs
elapsed_time              8.956595412 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-ffff8e47c5427800.read_ahead_stats=clear
llite.lustre-ffff8e47c5427800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.28855 seconds
llite.lustre-ffff8e47c5427800.read_ahead_stats=
snapshot_time             1780340974.422451304 secs.nsecs
start_time                1780340965.823918906 secs.nsecs
elapsed_time              8.598532398 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-ffff8e47c5427800.max_read_ahead_whole_mb=4