== sanity test 248c: verify whole file read behavior ===== 01:01:49 (1789448509)
llite.lustre-ffff9bcb89aa1800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9bcb89aa1800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.95557 seconds
llite.lustre-ffff9bcb89aa1800.read_ahead_stats=
snapshot_time                       1789448519.803375732 secs.nsecs
start_time                          1789448511.089845011 secs.nsecs
elapsed_time                        8.713530721 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-ffff9bcb89aa1800.read_ahead_stats=clear
llite.lustre-ffff9bcb89aa1800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.64779 seconds
llite.lustre-ffff9bcb89aa1800.read_ahead_stats=
snapshot_time                       1789448528.817174649 secs.nsecs
start_time                          1789448519.822452883 secs.nsecs
elapsed_time                        8.994721766 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-ffff9bcb89aa1800.max_read_ahead_whole_mb=4