== sanity test 248c: verify whole file read behavior ===== 19:15:34 (1746141334)
llite.lustre-ffff88008195b800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88008195b800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 15.7 seconds
llite.lustre-ffff88008195b800.read_ahead_stats=
snapshot_time             1746141340.554681247 secs.nsecs
start_time                1746141335.859812770 secs.nsecs
elapsed_time              4.694868477 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-ffff88008195b800.read_ahead_stats=clear
llite.lustre-ffff88008195b800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 20.0 seconds
llite.lustre-ffff88008195b800.read_ahead_stats=
snapshot_time             1746141344.738180628 secs.nsecs
start_time                1746141340.579959341 secs.nsecs
elapsed_time              4.158221287 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-ffff88008195b800.max_read_ahead_whole_mb=4