== sanity test 248c: verify whole file read behavior ===== 22:46:18 (1784342778)
llite.lustre-ffff92a542ae7800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff92a542ae7800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.65375 seconds
llite.lustre-ffff92a542ae7800.read_ahead_stats=
snapshot_time                       1784342781.886967107 secs.nsecs
start_time                          1784342779.063832688 secs.nsecs
elapsed_time                        2.823134419 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-ffff92a542ae7800.read_ahead_stats=clear
llite.lustre-ffff92a542ae7800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 2.80423 seconds
llite.lustre-ffff92a542ae7800.read_ahead_stats=
snapshot_time                       1784342785.225539124 secs.nsecs
start_time                          1784342781.891595207 secs.nsecs
elapsed_time                        3.333943917 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-ffff92a542ae7800.max_read_ahead_whole_mb=4