== sanity test 248c: verify whole file read behavior ===== 21:07:55 (1788916075)
llite.lustre-ffff8b5550c24000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8b5550c24000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.56251 seconds
llite.lustre-ffff8b5550c24000.read_ahead_stats=
snapshot_time                       1788916084.486976472 secs.nsecs
start_time                          1788916077.081988715 secs.nsecs
elapsed_time                        7.404987757 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-ffff8b5550c24000.read_ahead_stats=clear
llite.lustre-ffff8b5550c24000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 10.1997 seconds
llite.lustre-ffff8b5550c24000.read_ahead_stats=
snapshot_time                       1788916096.330571141 secs.nsecs
start_time                          1788916084.494181359 secs.nsecs
elapsed_time                        11.836389782 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-ffff8b5550c24000.max_read_ahead_whole_mb=4