== sanity test 248c: verify whole file read behavior ===== 01:15:21 (1781241321)
llite.lustre-ffff96cbc3382000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff96cbc3382000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.1689 seconds
llite.lustre-ffff96cbc3382000.read_ahead_stats=
snapshot_time             1781241331.538412047 secs.nsecs
start_time                1781241323.580291855 secs.nsecs
elapsed_time              7.958120192 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-ffff96cbc3382000.read_ahead_stats=clear
llite.lustre-ffff96cbc3382000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.71901 seconds
llite.lustre-ffff96cbc3382000.read_ahead_stats=
snapshot_time             1781241339.968428330 secs.nsecs
start_time                1781241331.553082738 secs.nsecs
elapsed_time              8.415345592 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-ffff96cbc3382000.max_read_ahead_whole_mb=4