== sanity test 248c: verify whole file read behavior ===== 17:57:15 (1781819835)
llite.lustre-ffff8b1ec2c62800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8b1ec2c62800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.7532 seconds
llite.lustre-ffff8b1ec2c62800.read_ahead_stats=
snapshot_time                       1781819840.804408764 secs.nsecs
start_time                          1781819836.639932168 secs.nsecs
elapsed_time                        4.164476596 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-ffff8b1ec2c62800.read_ahead_stats=clear
llite.lustre-ffff8b1ec2c62800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.77159 seconds
llite.lustre-ffff8b1ec2c62800.read_ahead_stats=
snapshot_time                       1781819845.615105927 secs.nsecs
start_time                          1781819840.827166420 secs.nsecs
elapsed_time                        4.787939507 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-ffff8b1ec2c62800.max_read_ahead_whole_mb=4