== sanity test 248c: verify whole file read behavior ===== 03:14:12 (1746083652)
llite.lustre-ffff8800b7891000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b7891000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 17.8 seconds
llite.lustre-ffff8800b7891000.read_ahead_stats=
snapshot_time             1746083657.210280260 secs.nsecs
start_time                1746083653.136562041 secs.nsecs
elapsed_time              4.073718219 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-ffff8800b7891000.read_ahead_stats=clear
llite.lustre-ffff8800b7891000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 18.6 seconds
llite.lustre-ffff8800b7891000.read_ahead_stats=
snapshot_time             1746083661.550305663 secs.nsecs
start_time                1746083657.218287528 secs.nsecs
elapsed_time              4.332018135 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-ffff8800b7891000.max_read_ahead_whole_mb=4