== sanity test 248c: verify whole file read behavior ===== 13:18:17 (1772907497)
llite.lustre-ffff9c4f0e439000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff9c4f0e439000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.7576 seconds
llite.lustre-ffff9c4f0e439000.read_ahead_stats=
snapshot_time             1772907502.829142736 secs.nsecs
start_time                1772907497.900379073 secs.nsecs
elapsed_time              4.928763663 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-ffff9c4f0e439000.read_ahead_stats=clear
llite.lustre-ffff9c4f0e439000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.54851 seconds
llite.lustre-ffff9c4f0e439000.read_ahead_stats=
snapshot_time             1772907507.936935381 secs.nsecs
start_time                1772907502.834264720 secs.nsecs
elapsed_time              5.102670661 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-ffff9c4f0e439000.max_read_ahead_whole_mb=4