== sanity test 248c: verify whole file read behavior ===== 20:34:51 (1777422891)
llite.lustre-ffff937b10a9d000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff937b10a9d000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.30604 seconds
llite.lustre-ffff937b10a9d000.read_ahead_stats=
snapshot_time             1777422897.985565750 secs.nsecs
start_time                1777422892.469237180 secs.nsecs
elapsed_time              5.516328570 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-ffff937b10a9d000.read_ahead_stats=clear
llite.lustre-ffff937b10a9d000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.96424 seconds
llite.lustre-ffff937b10a9d000.read_ahead_stats=
snapshot_time             1777422903.590421022 secs.nsecs
start_time                1777422897.992811031 secs.nsecs
elapsed_time              5.597609991 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-ffff937b10a9d000.max_read_ahead_whole_mb=4