== sanity test 248c: verify whole file read behavior ===== 05:38:10 (1787564290)
llite.lustre-ffff8d3110cc1000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8d3110cc1000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.97324 seconds
llite.lustre-ffff8d3110cc1000.read_ahead_stats=
snapshot_time                       1787564299.449498742 secs.nsecs
start_time                          1787564291.657984378 secs.nsecs
elapsed_time                        7.791514364 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-ffff8d3110cc1000.read_ahead_stats=clear
llite.lustre-ffff8d3110cc1000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.31985 seconds
llite.lustre-ffff8d3110cc1000.read_ahead_stats=
snapshot_time                       1787564306.389158895 secs.nsecs
start_time                          1787564299.459402424 secs.nsecs
elapsed_time                        6.929756471 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-ffff8d3110cc1000.max_read_ahead_whole_mb=4