== sanity test 248c: verify whole file read behavior ===== 02:08:31 (1787119711)
llite.lustre-ffff8c92c7c1e000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8c92c7c1e000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.24656 seconds
llite.lustre-ffff8c92c7c1e000.read_ahead_stats=
snapshot_time                       1787119719.930954706 secs.nsecs
start_time                          1787119713.141603484 secs.nsecs
elapsed_time                        6.789351222 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-ffff8c92c7c1e000.read_ahead_stats=clear
llite.lustre-ffff8c92c7c1e000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.65271 seconds
llite.lustre-ffff8c92c7c1e000.read_ahead_stats=
snapshot_time                       1787119728.605165120 secs.nsecs
start_time                          1787119719.946186121 secs.nsecs
elapsed_time                        8.658978999 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-ffff8c92c7c1e000.max_read_ahead_whole_mb=4