== sanity test 248c: verify whole file read behavior ===== 08:09:28 (1733404168)
llite.lustre-ffff880097e9f800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff880097e9f800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 30.3 seconds
llite.lustre-ffff880097e9f800.read_ahead_stats=
snapshot_time             1733404171.092756046 secs.nsecs
start_time                1733404168.755447918 secs.nsecs
elapsed_time              2.337308128 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-ffff880097e9f800.read_ahead_stats=clear
llite.lustre-ffff880097e9f800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 35.3 seconds
llite.lustre-ffff880097e9f800.read_ahead_stats=
snapshot_time             1733404173.409746661 secs.nsecs
start_time                1733404171.096643111 secs.nsecs
elapsed_time              2.313103550 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-ffff880097e9f800.max_read_ahead_whole_mb=64