== sanity test 248c: verify whole file read behavior ===== 18:08:20 (1781215700)
llite.lustre-ffff9658850a1800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9658850a1800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.27388 seconds
llite.lustre-ffff9658850a1800.read_ahead_stats=
snapshot_time             1781215709.654964402 secs.nsecs
start_time                1781215702.709245394 secs.nsecs
elapsed_time              6.945719008 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-ffff9658850a1800.read_ahead_stats=clear
llite.lustre-ffff9658850a1800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.82084 seconds
llite.lustre-ffff9658850a1800.read_ahead_stats=
snapshot_time             1781215718.645770118 secs.nsecs
start_time                1781215709.663585700 secs.nsecs
elapsed_time              8.982184418 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-ffff9658850a1800.max_read_ahead_whole_mb=4