== sanity test 248c: verify whole file read behavior ===== 06:20:54 (1768303254)
llite.lustre-ffffa03542e8f000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffffa03542e8f000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 9.75193 seconds
llite.lustre-ffffa03542e8f000.read_ahead_stats=
snapshot_time             1768303266.883932514 secs.nsecs
start_time                1768303256.419669453 secs.nsecs
elapsed_time              10.464263061 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-ffffa03542e8f000.read_ahead_stats=clear
llite.lustre-ffffa03542e8f000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 13.8255 seconds
llite.lustre-ffffa03542e8f000.read_ahead_stats=
snapshot_time             1768303282.133108703 secs.nsecs
start_time                1768303266.913627541 secs.nsecs
elapsed_time              15.219481162 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-ffffa03542e8f000.max_read_ahead_whole_mb=4