== sanity test 248c: verify whole file read behavior ===== 00:38:28 (1783139908)
llite.lustre-ffff9dff09add000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9dff09add000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.02396 seconds
llite.lustre-ffff9dff09add000.read_ahead_stats=
snapshot_time                       1783139917.726224572 secs.nsecs
start_time                          1783139910.002027962 secs.nsecs
elapsed_time                        7.724196610 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-ffff9dff09add000.read_ahead_stats=clear
llite.lustre-ffff9dff09add000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.72252 seconds
llite.lustre-ffff9dff09add000.read_ahead_stats=
snapshot_time                       1783139927.627408874 secs.nsecs
start_time                          1783139917.748341974 secs.nsecs
elapsed_time                        9.879066900 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-ffff9dff09add000.max_read_ahead_whole_mb=4