== sanity test 248c: verify whole file read behavior ===== 00:27:33 (1762493253)
llite.lustre-ffff97e8c8630800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff97e8c8630800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.50553 seconds
llite.lustre-ffff97e8c8630800.read_ahead_stats=
snapshot_time             1762493261.334952216 secs.nsecs
start_time                1762493254.441499693 secs.nsecs
elapsed_time              6.893452523 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-ffff97e8c8630800.read_ahead_stats=clear
llite.lustre-ffff97e8c8630800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.7902 seconds
llite.lustre-ffff97e8c8630800.read_ahead_stats=
snapshot_time             1762493268.302595749 secs.nsecs
start_time                1762493261.343418325 secs.nsecs
elapsed_time              6.959177424 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-ffff97e8c8630800.max_read_ahead_whole_mb=4