== sanity test 248c: verify whole file read behavior ===== 21:17:25 (1746148645)
llite.lustre-ffff8800b591a000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b591a000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 15.8 seconds
llite.lustre-ffff8800b591a000.read_ahead_stats=
snapshot_time             1746148651.002625995 secs.nsecs
start_time                1746148646.337409709 secs.nsecs
elapsed_time              4.665216286 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-ffff8800b591a000.read_ahead_stats=clear
llite.lustre-ffff8800b591a000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 19.3 seconds
llite.lustre-ffff8800b591a000.read_ahead_stats=
snapshot_time             1746148655.470593033 secs.nsecs
start_time                1746148651.012126996 secs.nsecs
elapsed_time              4.458466037 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-ffff8800b591a000.max_read_ahead_whole_mb=4