== sanity test 248c: verify whole file read behavior ===== 02:58:39 (1776927519)
llite.lustre-ffff8b4343636000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8b4343636000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.40369 seconds
llite.lustre-ffff8b4343636000.read_ahead_stats=
snapshot_time             1776927529.320945187 secs.nsecs
start_time                1776927521.324497580 secs.nsecs
elapsed_time              7.996447607 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-ffff8b4343636000.read_ahead_stats=clear
llite.lustre-ffff8b4343636000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.81416 seconds
llite.lustre-ffff8b4343636000.read_ahead_stats=
snapshot_time             1776927539.138763292 secs.nsecs
start_time                1776927529.340771331 secs.nsecs
elapsed_time              9.797991961 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-ffff8b4343636000.max_read_ahead_whole_mb=4