== sanity test 248c: verify whole file read behavior ===== 15:52:11 (1778356331)
llite.lustre-ffff938e08056800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff938e08056800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.52953 seconds
llite.lustre-ffff938e08056800.read_ahead_stats=
snapshot_time             1778356334.819036653 secs.nsecs
start_time                1778356332.111487793 secs.nsecs
elapsed_time              2.707548860 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-ffff938e08056800.read_ahead_stats=clear
llite.lustre-ffff938e08056800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 2.81961 seconds
llite.lustre-ffff938e08056800.read_ahead_stats=
snapshot_time             1778356338.182194429 secs.nsecs
start_time                1778356334.824792116 secs.nsecs
elapsed_time              3.357402313 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-ffff938e08056800.max_read_ahead_whole_mb=4