== sanity test 248c: verify whole file read behavior ===== 22:40:59 (1788921659)
llite.lustre-ffff9aadaf4ec800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9aadaf4ec800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.33774 seconds
llite.lustre-ffff9aadaf4ec800.read_ahead_stats=
snapshot_time                       1788921667.424790763 secs.nsecs
start_time                          1788921661.401462128 secs.nsecs
elapsed_time                        6.023328635 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-ffff9aadaf4ec800.read_ahead_stats=clear
llite.lustre-ffff9aadaf4ec800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.09456 seconds
llite.lustre-ffff9aadaf4ec800.read_ahead_stats=
snapshot_time                       1788921674.064416054 secs.nsecs
start_time                          1788921667.446722927 secs.nsecs
elapsed_time                        6.617693127 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-ffff9aadaf4ec800.max_read_ahead_whole_mb=4