== sanity test 248c: verify whole file read behavior ===== 13:20:23 (1750180823)
llite.lustre-ffff8800b6377000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b6377000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 20.9 seconds
llite.lustre-ffff8800b6377000.read_ahead_stats=
snapshot_time             1750180827.314391673 secs.nsecs
start_time                1750180823.857530040 secs.nsecs
elapsed_time              3.456861633 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-ffff8800b6377000.read_ahead_stats=clear
llite.lustre-ffff8800b6377000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 20.5 seconds
llite.lustre-ffff8800b6377000.read_ahead_stats=
snapshot_time             1750180831.229745898 secs.nsecs
start_time                1750180827.320543510 secs.nsecs
elapsed_time              3.909202388 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-ffff8800b6377000.max_read_ahead_whole_mb=4