== sanity test 248c: verify whole file read behavior ===== 20:31:09 (1787617869)
llite.lustre-ffff96b89300e000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff96b89300e000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.1779 seconds
llite.lustre-ffff96b89300e000.read_ahead_stats=
snapshot_time                       1787617877.284196876 secs.nsecs
start_time                          1787617871.606655353 secs.nsecs
elapsed_time                        5.677541523 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-ffff96b89300e000.read_ahead_stats=clear
llite.lustre-ffff96b89300e000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.23102 seconds
llite.lustre-ffff96b89300e000.read_ahead_stats=
snapshot_time                       1787617884.800722653 secs.nsecs
start_time                          1787617877.301355193 secs.nsecs
elapsed_time                        7.499367460 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-ffff96b89300e000.max_read_ahead_whole_mb=4