== sanity test 248c: verify whole file read behavior ===== 05:32:55 (1769077975)
llite.lustre-ffff9f2758d58000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff9f2758d58000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 10.3669 seconds
llite.lustre-ffff9f2758d58000.read_ahead_stats=
snapshot_time             1769077989.170910671 secs.nsecs
start_time                1769077977.966608872 secs.nsecs
elapsed_time              11.204301799 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-ffff9f2758d58000.read_ahead_stats=clear
llite.lustre-ffff9f2758d58000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 12.2199 seconds
llite.lustre-ffff9f2758d58000.read_ahead_stats=
snapshot_time             1769078004.412212549 secs.nsecs
start_time                1769077989.197771652 secs.nsecs
elapsed_time              15.214440897 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-ffff9f2758d58000.max_read_ahead_whole_mb=4