== sanity test 248c: verify whole file read behavior ===== 06:16:15 (1778926575)
llite.lustre-ffff8f5218d16800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8f5218d16800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.32864 seconds
llite.lustre-ffff8f5218d16800.read_ahead_stats=
snapshot_time             1778926584.827556262 secs.nsecs
start_time                1778926576.789011318 secs.nsecs
elapsed_time              8.038544944 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-ffff8f5218d16800.read_ahead_stats=clear
llite.lustre-ffff8f5218d16800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.55143 seconds
llite.lustre-ffff8f5218d16800.read_ahead_stats=
snapshot_time             1778926593.406936307 secs.nsecs
start_time                1778926584.846501644 secs.nsecs
elapsed_time              8.560434663 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-ffff8f5218d16800.max_read_ahead_whole_mb=4