== sanity test 248c: verify whole file read behavior ===== 06:54:13 (1778842453)
llite.lustre-ffff937845e69000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff937845e69000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.84829 seconds
llite.lustre-ffff937845e69000.read_ahead_stats=
snapshot_time             1778842457.264727197 secs.nsecs
start_time                1778842454.190809390 secs.nsecs
elapsed_time              3.073917807 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-ffff937845e69000.read_ahead_stats=clear
llite.lustre-ffff937845e69000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 2.762 seconds
llite.lustre-ffff937845e69000.read_ahead_stats=
snapshot_time             1778842460.607435518 secs.nsecs
start_time                1778842457.270222453 secs.nsecs
elapsed_time              3.337213065 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-ffff937845e69000.max_read_ahead_whole_mb=4