== sanity test 248c: verify whole file read behavior ===== 15:16:33 (1790104593)
llite.lustre-ffff9d18c0dc9800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9d18c0dc9800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.15589 seconds
llite.lustre-ffff9d18c0dc9800.read_ahead_stats=
snapshot_time                       1790104602.111197088 secs.nsecs
start_time                          1790104595.324673294 secs.nsecs
elapsed_time                        6.786523794 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-ffff9d18c0dc9800.read_ahead_stats=clear
llite.lustre-ffff9d18c0dc9800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.95324 seconds
llite.lustre-ffff9d18c0dc9800.read_ahead_stats=
snapshot_time                       1790104610.235868149 secs.nsecs
start_time                          1790104602.127746087 secs.nsecs
elapsed_time                        8.108122062 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-ffff9d18c0dc9800.max_read_ahead_whole_mb=4