== sanity test 248c: verify whole file read behavior ===== 02:53:50 (1772178830)
llite.lustre-ffff923aea9ac800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff923aea9ac800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.20896 seconds
llite.lustre-ffff923aea9ac800.read_ahead_stats=
snapshot_time             1772178837.015344499 secs.nsecs
start_time                1772178831.541907188 secs.nsecs
elapsed_time              5.473437311 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-ffff923aea9ac800.read_ahead_stats=clear
llite.lustre-ffff923aea9ac800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.51446 seconds
llite.lustre-ffff923aea9ac800.read_ahead_stats=
snapshot_time             1772178843.266628480 secs.nsecs
start_time                1772178837.024492792 secs.nsecs
elapsed_time              6.242135688 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-ffff923aea9ac800.max_read_ahead_whole_mb=4