== sanity test 248c: verify whole file read behavior ===== 22:02:21 (1789610541)
llite.lustre-ffff95c20fc34000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff95c20fc34000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.24544 seconds
llite.lustre-ffff95c20fc34000.read_ahead_stats=
snapshot_time                       1789610550.440886033 secs.nsecs
start_time                          1789610543.509714745 secs.nsecs
elapsed_time                        6.931171288 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-ffff95c20fc34000.read_ahead_stats=clear
llite.lustre-ffff95c20fc34000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.2371 seconds
llite.lustre-ffff95c20fc34000.read_ahead_stats=
snapshot_time                       1789610559.471782024 secs.nsecs
start_time                          1789610550.471399657 secs.nsecs
elapsed_time                        9.000382367 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-ffff95c20fc34000.max_read_ahead_whole_mb=4