== sanity test 248c: verify whole file read behavior ===== 01:47:59 (1721886479)
llite.lustre-ffff8800a9a30800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8800a9a30800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 36.1 seconds
llite.lustre-ffff8800a9a30800.read_ahead_stats=
snapshot_time             1721886482.423212974 secs.nsecs
start_time                1721886480.339960047 secs.nsecs
elapsed_time              2.083252927 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-ffff8800a9a30800.read_ahead_stats=clear
llite.lustre-ffff8800a9a30800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 35.9 seconds
llite.lustre-ffff8800a9a30800.read_ahead_stats=
snapshot_time             1721886484.694913571 secs.nsecs
start_time                1721886482.428981280 secs.nsecs
elapsed_time              2.265932291 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-ffff8800a9a30800.max_read_ahead_whole_mb=64