== sanity test 248c: verify whole file read behavior ===== 00:01:30 (1789358490)
llite.lustre-ffff994d505fc800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff994d505fc800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.0955 seconds
llite.lustre-ffff994d505fc800.read_ahead_stats=
snapshot_time                       1789358494.179260074 secs.nsecs
start_time                          1789358490.877864544 secs.nsecs
elapsed_time                        3.301395530 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-ffff994d505fc800.read_ahead_stats=clear
llite.lustre-ffff994d505fc800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.06684 seconds
llite.lustre-ffff994d505fc800.read_ahead_stats=
snapshot_time                       1789358497.888015968 secs.nsecs
start_time                          1789358494.185580334 secs.nsecs
elapsed_time                        3.702435634 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-ffff994d505fc800.max_read_ahead_whole_mb=4