== sanity test 248c: verify whole file read behavior ===== 02:56:48 (1769759808)
llite.lustre-ffff8e6c98168000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8e6c98168000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.11995 seconds
llite.lustre-ffff8e6c98168000.read_ahead_stats=
snapshot_time             1769759814.509905675 secs.nsecs
start_time                1769759809.130028819 secs.nsecs
elapsed_time              5.379876856 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-ffff8e6c98168000.read_ahead_stats=clear
llite.lustre-ffff8e6c98168000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.17088 seconds
llite.lustre-ffff8e6c98168000.read_ahead_stats=
snapshot_time             1769759820.380336340 secs.nsecs
start_time                1769759814.517543815 secs.nsecs
elapsed_time              5.862792525 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-ffff8e6c98168000.max_read_ahead_whole_mb=4