== sanity test 248c: verify whole file read behavior ===== 12:43:00 (1788194580)
llite.lustre-ffff8c5d05ac4800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8c5d05ac4800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.13852 seconds
llite.lustre-ffff8c5d05ac4800.read_ahead_stats=
snapshot_time                       1788194592.395019265 secs.nsecs
start_time                          1788194583.356493634 secs.nsecs
elapsed_time                        9.038525631 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-ffff8c5d05ac4800.read_ahead_stats=clear
llite.lustre-ffff8c5d05ac4800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 9.24254 seconds
llite.lustre-ffff8c5d05ac4800.read_ahead_stats=
snapshot_time                       1788194604.216997398 secs.nsecs
start_time                          1788194592.426723242 secs.nsecs
elapsed_time                        11.790274156 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-ffff8c5d05ac4800.max_read_ahead_whole_mb=4