== sanity test 248c: verify whole file read behavior ===== 11:23:29 (1754407409)
llite.lustre-ffff8f9d19232000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8f9d19232000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.8719 seconds
llite.lustre-ffff8f9d19232000.read_ahead_stats=
snapshot_time             1754407414.668008894 secs.nsecs
start_time                1754407410.590963065 secs.nsecs
elapsed_time              4.077045829 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-ffff8f9d19232000.read_ahead_stats=clear
llite.lustre-ffff8f9d19232000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.83112 seconds
llite.lustre-ffff8f9d19232000.read_ahead_stats=
snapshot_time             1754407419.135206154 secs.nsecs
start_time                1754407414.674293863 secs.nsecs
elapsed_time              4.460912291 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-ffff8f9d19232000.max_read_ahead_whole_mb=4