== sanity test 248c: verify whole file read behavior ===== 14:07:09 (1789063629)
llite.lustre-ffff977f98b0d000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff977f98b0d000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.00031 seconds
llite.lustre-ffff977f98b0d000.read_ahead_stats=
snapshot_time             1789063640.833367203 secs.nsecs
start_time                1789063632.013941026 secs.nsecs
elapsed_time              8.819426177 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-ffff977f98b0d000.read_ahead_stats=clear
llite.lustre-ffff977f98b0d000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.28934 seconds
llite.lustre-ffff977f98b0d000.read_ahead_stats=
snapshot_time             1789063650.725181828 secs.nsecs
start_time                1789063640.866727773 secs.nsecs
elapsed_time              9.858454055 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-ffff977f98b0d000.max_read_ahead_whole_mb=4