== sanity test 248c: verify whole file read behavior ===== 00:48:39 (1789188519)
llite.lustre-ffff945dfabde800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff945dfabde800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.74345 seconds
llite.lustre-ffff945dfabde800.read_ahead_stats=
snapshot_time                       1789188522.721917675 secs.nsecs
start_time                          1789188519.809860181 secs.nsecs
elapsed_time                        2.912057494 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-ffff945dfabde800.read_ahead_stats=clear
llite.lustre-ffff945dfabde800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.11077 seconds
llite.lustre-ffff945dfabde800.read_ahead_stats=
snapshot_time                       1789188526.485660900 secs.nsecs
start_time                          1789188522.728454020 secs.nsecs
elapsed_time                        3.757206880 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-ffff945dfabde800.max_read_ahead_whole_mb=4