== sanity test 248c: verify whole file read behavior ===== 18:30:23 (1746138623)
llite.lustre-ffff8800b6303000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b6303000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 23.4 seconds
llite.lustre-ffff8800b6303000.read_ahead_stats=
snapshot_time             1746138627.075694799 secs.nsecs
start_time                1746138623.925717241 secs.nsecs
elapsed_time              3.149977558 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-ffff8800b6303000.read_ahead_stats=clear
llite.lustre-ffff8800b6303000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 24.2 seconds
llite.lustre-ffff8800b6303000.read_ahead_stats=
snapshot_time             1746138630.427325931 secs.nsecs
start_time                1746138627.080418604 secs.nsecs
elapsed_time              3.346907327 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-ffff8800b6303000.max_read_ahead_whole_mb=4