== sanity test 248c: verify whole file read behavior ===== 19:44:19 (1781221459)
llite.lustre-ffff97e3c4e3d800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff97e3c4e3d800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.07264 seconds
llite.lustre-ffff97e3c4e3d800.read_ahead_stats=
snapshot_time             1781221470.703168641 secs.nsecs
start_time                1781221461.879529462 secs.nsecs
elapsed_time              8.823639179 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-ffff97e3c4e3d800.read_ahead_stats=clear
llite.lustre-ffff97e3c4e3d800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.20406 seconds
llite.lustre-ffff97e3c4e3d800.read_ahead_stats=
snapshot_time             1781221480.122061863 secs.nsecs
start_time                1781221470.733339056 secs.nsecs
elapsed_time              9.388722807 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-ffff97e3c4e3d800.max_read_ahead_whole_mb=4