== sanity test 248c: verify whole file read behavior ===== 10:21:11 (1783952471)
llite.lustre-ffff9a7bc99c5000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9a7bc99c5000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.66031 seconds
llite.lustre-ffff9a7bc99c5000.read_ahead_stats=
snapshot_time                       1783952480.896941188 secs.nsecs
start_time                          1783952473.431740426 secs.nsecs
elapsed_time                        7.465200762 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-ffff9a7bc99c5000.read_ahead_stats=clear
llite.lustre-ffff9a7bc99c5000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.78543 seconds
llite.lustre-ffff9a7bc99c5000.read_ahead_stats=
snapshot_time                       1783952490.879874393 secs.nsecs
start_time                          1783952480.959685611 secs.nsecs
elapsed_time                        9.920188782 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-ffff9a7bc99c5000.max_read_ahead_whole_mb=4