== sanity test 248c: verify whole file read behavior ===== 17:34:18 (1788816858)
llite.lustre-ffff9559ca101800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff9559ca101800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.28748 seconds
llite.lustre-ffff9559ca101800.read_ahead_stats=
snapshot_time                       1788816864.591335062 secs.nsecs
start_time                          1788816859.840572379 secs.nsecs
elapsed_time                        4.750762683 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-ffff9559ca101800.read_ahead_stats=clear
llite.lustre-ffff9559ca101800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.34354 seconds
llite.lustre-ffff9559ca101800.read_ahead_stats=
snapshot_time                       1788816871.223209814 secs.nsecs
start_time                          1788816864.608552164 secs.nsecs
elapsed_time                        6.614657650 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-ffff9559ca101800.max_read_ahead_whole_mb=4