== sanity test 248c: verify whole file read behavior ===== 01:07:46 (1788757666)
llite.lustre-ffff9d95835ad000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9d95835ad000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.58947 seconds
llite.lustre-ffff9d95835ad000.read_ahead_stats=
snapshot_time                       1788757675.790450379 secs.nsecs
start_time                          1788757668.363081928 secs.nsecs
elapsed_time                        7.427368451 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-ffff9d95835ad000.read_ahead_stats=clear
llite.lustre-ffff9d95835ad000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.12322 seconds
llite.lustre-ffff9d95835ad000.read_ahead_stats=
snapshot_time                       1788757686.225898552 secs.nsecs
start_time                          1788757675.854854566 secs.nsecs
elapsed_time                        10.371043986 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-ffff9d95835ad000.max_read_ahead_whole_mb=4