== sanity test 248c: verify whole file read behavior ===== 11:03:56 (1787843036)
llite.lustre-ffff9ecd90a36800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9ecd90a36800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.96933 seconds
llite.lustre-ffff9ecd90a36800.read_ahead_stats=
snapshot_time                       1787843046.969501768 secs.nsecs
start_time                          1787843038.338648019 secs.nsecs
elapsed_time                        8.630853749 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-ffff9ecd90a36800.read_ahead_stats=clear
llite.lustre-ffff9ecd90a36800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.93494 seconds
llite.lustre-ffff9ecd90a36800.read_ahead_stats=
snapshot_time                       1787843055.928700420 secs.nsecs
start_time                          1787843047.002495668 secs.nsecs
elapsed_time                        8.926204752 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-ffff9ecd90a36800.max_read_ahead_whole_mb=4