== sanity test 248c: verify whole file read behavior ===== 01:55:41 (1761285341)
llite.lustre-ffff8e3a92a79000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8e3a92a79000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 11.0509 seconds
llite.lustre-ffff8e3a92a79000.read_ahead_stats=
snapshot_time             1761285355.111747085 secs.nsecs
start_time                1761285343.335329708 secs.nsecs
elapsed_time              11.776417377 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-ffff8e3a92a79000.read_ahead_stats=clear
llite.lustre-ffff8e3a92a79000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 10.6904 seconds
llite.lustre-ffff8e3a92a79000.read_ahead_stats=
snapshot_time             1761285368.234946773 secs.nsecs
start_time                1761285355.139517029 secs.nsecs
elapsed_time              13.095429744 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-ffff8e3a92a79000.max_read_ahead_whole_mb=4