== sanity test 248c: verify whole file read behavior ===== 22:21:32 (1781230892)
llite.lustre-ffffa0ae189e2800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffffa0ae189e2800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.27825 seconds
llite.lustre-ffffa0ae189e2800.read_ahead_stats=
snapshot_time             1781230902.786680804 secs.nsecs
start_time                1781230894.889974126 secs.nsecs
elapsed_time              7.896706678 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-ffffa0ae189e2800.read_ahead_stats=clear
llite.lustre-ffffa0ae189e2800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.649 seconds
llite.lustre-ffffa0ae189e2800.read_ahead_stats=
snapshot_time             1781230911.291372250 secs.nsecs
start_time                1781230902.799819706 secs.nsecs
elapsed_time              8.491552544 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-ffffa0ae189e2800.max_read_ahead_whole_mb=4