== sanity test 248c: verify whole file read behavior ===== 15:07:08 (1758740828)
llite.lustre-ffff95da02aa4800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff95da02aa4800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.8401 seconds
llite.lustre-ffff95da02aa4800.read_ahead_stats=
snapshot_time             1758740835.441978137 secs.nsecs
start_time                1758740830.221926817 secs.nsecs
elapsed_time              5.220051320 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-ffff95da02aa4800.read_ahead_stats=clear
llite.lustre-ffff95da02aa4800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.31768 seconds
llite.lustre-ffff95da02aa4800.read_ahead_stats=
snapshot_time             1758740841.787623132 secs.nsecs
start_time                1758740835.451573493 secs.nsecs
elapsed_time              6.336049639 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-ffff95da02aa4800.max_read_ahead_whole_mb=4