== sanity test 248c: verify whole file read behavior ===== 09:05:13 (1788613513)
llite.lustre-ffff95b30341f000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff95b30341f000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.45453 seconds
llite.lustre-ffff95b30341f000.read_ahead_stats=
snapshot_time                       1788613521.500775938 secs.nsecs
start_time                          1788613515.263668682 secs.nsecs
elapsed_time                        6.237107256 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-ffff95b30341f000.read_ahead_stats=clear
llite.lustre-ffff95b30341f000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.39585 seconds
llite.lustre-ffff95b30341f000.read_ahead_stats=
snapshot_time                       1788613531.379756988 secs.nsecs
start_time                          1788613521.562732116 secs.nsecs
elapsed_time                        9.817024872 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-ffff95b30341f000.max_read_ahead_whole_mb=4