== sanity test 248c: verify whole file read behavior ===== 05:14:46 (1779873286)
llite.lustre-ffff989f13a3d800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff989f13a3d800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.82143 seconds
llite.lustre-ffff989f13a3d800.read_ahead_stats=
snapshot_time             1779873295.780056859 secs.nsecs
start_time                1779873288.144335857 secs.nsecs
elapsed_time              7.635721002 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-ffff989f13a3d800.read_ahead_stats=clear
llite.lustre-ffff989f13a3d800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.65882 seconds
llite.lustre-ffff989f13a3d800.read_ahead_stats=
snapshot_time             1779873303.632396323 secs.nsecs
start_time                1779873295.793646108 secs.nsecs
elapsed_time              7.838750215 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-ffff989f13a3d800.max_read_ahead_whole_mb=4