== sanity test 248c: verify whole file read behavior ===== 06:25:55 (1783074355)
llite.lustre-ffff8b9043ded800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8b9043ded800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.10726 seconds
llite.lustre-ffff8b9043ded800.read_ahead_stats=
snapshot_time                       1783074359.578590620 secs.nsecs
start_time                          1783074356.224971834 secs.nsecs
elapsed_time                        3.353618786 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-ffff8b9043ded800.read_ahead_stats=clear
llite.lustre-ffff8b9043ded800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.00861 seconds
llite.lustre-ffff8b9043ded800.read_ahead_stats=
snapshot_time                       1783074363.291206282 secs.nsecs
start_time                          1783074359.584880514 secs.nsecs
elapsed_time                        3.706325768 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-ffff8b9043ded800.max_read_ahead_whole_mb=4