== sanity test 248c: verify whole file read behavior ===== 17:12:49 (1781212369)
llite.lustre-ffff9ebdd1ef4800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9ebdd1ef4800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.54799 seconds
llite.lustre-ffff9ebdd1ef4800.read_ahead_stats=
snapshot_time             1781212374.342140918 secs.nsecs
start_time                1781212370.354573545 secs.nsecs
elapsed_time              3.987567373 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-ffff9ebdd1ef4800.read_ahead_stats=clear
llite.lustre-ffff9ebdd1ef4800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.93842 seconds
llite.lustre-ffff9ebdd1ef4800.read_ahead_stats=
snapshot_time             1781212379.116161055 secs.nsecs
start_time                1781212374.350518796 secs.nsecs
elapsed_time              4.765642259 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-ffff9ebdd1ef4800.max_read_ahead_whole_mb=4