== sanity test 248c: verify whole file read behavior ===== 02:44:01 (1735371841)
llite.lustre-ffff88012b1f7000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff88012b1f7000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 37.1 seconds
llite.lustre-ffff88012b1f7000.read_ahead_stats=
snapshot_time             1735371844.578926557 secs.nsecs
start_time                1735371842.554043252 secs.nsecs
elapsed_time              2.024883305 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-ffff88012b1f7000.read_ahead_stats=clear
llite.lustre-ffff88012b1f7000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 36.3 seconds
llite.lustre-ffff88012b1f7000.read_ahead_stats=
snapshot_time             1735371846.842407067 secs.nsecs
start_time                1735371844.584204437 secs.nsecs
elapsed_time              2.258202630 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-ffff88012b1f7000.max_read_ahead_whole_mb=64