== sanity test 248c: verify whole file read behavior ===== 07:32:31 (1749123151)
llite.lustre-ffff8800aa807800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff8800aa807800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 29.4 seconds
llite.lustre-ffff8800aa807800.read_ahead_stats=
snapshot_time             1749123154.440136175 secs.nsecs
start_time                1749123152.034262118 secs.nsecs
elapsed_time              2.405874057 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-ffff8800aa807800.read_ahead_stats=clear
llite.lustre-ffff8800aa807800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 27.9 seconds
llite.lustre-ffff8800aa807800.read_ahead_stats=
snapshot_time             1749123157.307170123 secs.nsecs
start_time                1749123154.444196210 secs.nsecs
elapsed_time              2.862973913 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-ffff8800aa807800.max_read_ahead_whole_mb=4