== sanity test 248c: verify whole file read behavior ===== 05:43:27 (1789119807)
llite.lustre-ffff8e79068d3000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8e79068d3000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.74155 seconds
llite.lustre-ffff8e79068d3000.read_ahead_stats=
snapshot_time                       1789119817.077258780 secs.nsecs
start_time                          1789119809.561675169 secs.nsecs
elapsed_time                        7.515583611 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-ffff8e79068d3000.read_ahead_stats=clear
llite.lustre-ffff8e79068d3000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.31853 seconds
llite.lustre-ffff8e79068d3000.read_ahead_stats=
snapshot_time                       1789119827.351017173 secs.nsecs
start_time                          1789119817.094222171 secs.nsecs
elapsed_time                        10.256795002 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-ffff8e79068d3000.max_read_ahead_whole_mb=4