== sanity test 248c: verify whole file read behavior ===== 11:36:44 (1787499404)
llite.lustre-ffff9e6d530d2800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9e6d530d2800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.63645 seconds
llite.lustre-ffff9e6d530d2800.read_ahead_stats=
snapshot_time                       1787499412.109587672 secs.nsecs
start_time                          1787499405.979594320 secs.nsecs
elapsed_time                        6.129993352 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-ffff9e6d530d2800.read_ahead_stats=clear
llite.lustre-ffff9e6d530d2800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.91407 seconds
llite.lustre-ffff9e6d530d2800.read_ahead_stats=
snapshot_time                       1787499419.872535001 secs.nsecs
start_time                          1787499412.128237601 secs.nsecs
elapsed_time                        7.744297400 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-ffff9e6d530d2800.max_read_ahead_whole_mb=4