== sanity test 248c: verify whole file read behavior ===== 01:02:01 (1781240521)
llite.lustre-ffff8f0b50636000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8f0b50636000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.83249 seconds
llite.lustre-ffff8f0b50636000.read_ahead_stats=
snapshot_time             1781240529.056039530 secs.nsecs
start_time                1781240522.679458755 secs.nsecs
elapsed_time              6.376580775 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-ffff8f0b50636000.read_ahead_stats=clear
llite.lustre-ffff8f0b50636000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.70483 seconds
llite.lustre-ffff8f0b50636000.read_ahead_stats=
snapshot_time             1781240537.419585261 secs.nsecs
start_time                1781240529.079769407 secs.nsecs
elapsed_time              8.339815854 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-ffff8f0b50636000.max_read_ahead_whole_mb=4