== sanity test 248c: verify whole file read behavior ===== 14:01:39 (1787853699)
llite.lustre-ffff8c2dc12af800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8c2dc12af800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.2653 seconds
llite.lustre-ffff8c2dc12af800.read_ahead_stats=
snapshot_time                       1787853706.395867364 secs.nsecs
start_time                          1787853700.623554653 secs.nsecs
elapsed_time                        5.772312711 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-ffff8c2dc12af800.read_ahead_stats=clear
llite.lustre-ffff8c2dc12af800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.82522 seconds
llite.lustre-ffff8c2dc12af800.read_ahead_stats=
snapshot_time                       1787853713.632458368 secs.nsecs
start_time                          1787853706.410783558 secs.nsecs
elapsed_time                        7.221674810 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-ffff8c2dc12af800.max_read_ahead_whole_mb=4