== sanity test 248c: verify whole file read behavior ===== 14:19:49 (1744136389)
llite.lustre-ffff8800aa9b9800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8800aa9b9800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 36.4 seconds
llite.lustre-ffff8800aa9b9800.read_ahead_stats=
snapshot_time             1744136392.681103467 secs.nsecs
start_time                1744136390.609308217 secs.nsecs
elapsed_time              2.071795250 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-ffff8800aa9b9800.read_ahead_stats=clear
llite.lustre-ffff8800aa9b9800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 35.1 seconds
llite.lustre-ffff8800aa9b9800.read_ahead_stats=
snapshot_time             1744136395.024690937 secs.nsecs
start_time                1744136392.686947351 secs.nsecs
elapsed_time              2.337743586 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-ffff8800aa9b9800.max_read_ahead_whole_mb=4