== sanity test 248c: verify whole file read behavior ===== 18:20:06 (1775168406)
llite.lustre-ffffa002c60f2000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffffa002c60f2000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.68367 seconds
llite.lustre-ffffa002c60f2000.read_ahead_stats=
snapshot_time             1775168410.486505028 secs.nsecs
start_time                1775168407.511326126 secs.nsecs
elapsed_time              2.975178902 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-ffffa002c60f2000.read_ahead_stats=clear
llite.lustre-ffffa002c60f2000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.29977 seconds
llite.lustre-ffffa002c60f2000.read_ahead_stats=
snapshot_time             1775168414.437954854 secs.nsecs
start_time                1775168410.494577961 secs.nsecs
elapsed_time              3.943376893 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-ffffa002c60f2000.max_read_ahead_whole_mb=4