== sanity test 248c: verify whole file read behavior ===== 17:42:09 (1773610929)
llite.lustre-ffff8e8404c06000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8e8404c06000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 11.0366 seconds
llite.lustre-ffff8e8404c06000.read_ahead_stats=
snapshot_time             1773610943.681833810 secs.nsecs
start_time                1773610931.600301416 secs.nsecs
elapsed_time              12.081532394 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-ffff8e8404c06000.read_ahead_stats=clear
llite.lustre-ffff8e8404c06000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 10.0648 seconds
llite.lustre-ffff8e8404c06000.read_ahead_stats=
snapshot_time             1773610956.662504635 secs.nsecs
start_time                1773610943.750713692 secs.nsecs
elapsed_time              12.911790943 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-ffff8e8404c06000.max_read_ahead_whole_mb=4