== sanity test 248c: verify whole file read behavior ===== 02:02:51 (1788933771)
llite.lustre-ffff8d6fe0879800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8d6fe0879800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.82467 seconds
llite.lustre-ffff8d6fe0879800.read_ahead_stats=
snapshot_time                       1788933779.627293884 secs.nsecs
start_time                          1788933773.251044158 secs.nsecs
elapsed_time                        6.376249726 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-ffff8d6fe0879800.read_ahead_stats=clear
llite.lustre-ffff8d6fe0879800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.75575 seconds
llite.lustre-ffff8d6fe0879800.read_ahead_stats=
snapshot_time                       1788933787.098931393 secs.nsecs
start_time                          1788933779.644896011 secs.nsecs
elapsed_time                        7.454035382 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-ffff8d6fe0879800.max_read_ahead_whole_mb=4