== sanity test 248c: verify whole file read behavior ===== 01:44:22 (1781243062)
llite.lustre-ffff8f4503092800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8f4503092800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.72459 seconds
llite.lustre-ffff8f4503092800.read_ahead_stats=
snapshot_time             1781243068.871561645 secs.nsecs
start_time                1781243063.476856684 secs.nsecs
elapsed_time              5.394704961 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-ffff8f4503092800.read_ahead_stats=clear
llite.lustre-ffff8f4503092800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.57096 seconds
llite.lustre-ffff8f4503092800.read_ahead_stats=
snapshot_time             1781243075.935862640 secs.nsecs
start_time                1781243068.879172823 secs.nsecs
elapsed_time              7.056689817 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-ffff8f4503092800.max_read_ahead_whole_mb=4