== sanity test 248c: verify whole file read behavior ===== 06:52:52 (1726311172)
llite.lustre-ffff8800a9881800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8800a9881800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 33.7 seconds
llite.lustre-ffff8800a9881800.read_ahead_stats=
snapshot_time             1726311175.051133805 secs.nsecs
start_time                1726311172.833843362 secs.nsecs
elapsed_time              2.217290443 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-ffff8800a9881800.read_ahead_stats=clear
llite.lustre-ffff8800a9881800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 36.0 seconds
llite.lustre-ffff8800a9881800.read_ahead_stats=
snapshot_time             1726311177.304272910 secs.nsecs
start_time                1726311175.056516344 secs.nsecs
elapsed_time              2.247756566 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-ffff8800a9881800.max_read_ahead_whole_mb=64