== sanity test 248c: verify whole file read behavior ===== 01:09:17 (1735106957)
llite.lustre-ffff88008df0b800.read_ahead_stats=c
striped dir -i0 -c2 -H fnv_1a_64 /mnt/lustre/d248c.sanity
llite.lustre-ffff88008df0b800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 36.2 seconds
llite.lustre-ffff88008df0b800.read_ahead_stats=
snapshot_time             1735106959.861494012 secs.nsecs
start_time                1735106957.883122094 secs.nsecs
elapsed_time              1.978371918 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-ffff88008df0b800.read_ahead_stats=clear
llite.lustre-ffff88008df0b800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 34.3 seconds
llite.lustre-ffff88008df0b800.read_ahead_stats=
snapshot_time             1735106962.200407489 secs.nsecs
start_time                1735106959.864567636 secs.nsecs
elapsed_time              2.335839853 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-ffff88008df0b800.max_read_ahead_whole_mb=64