== sanity test 248c: verify whole file read behavior ===== 17:24:55 (1787606695)
llite.lustre-ffff8e2d98ab4800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8e2d98ab4800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.37882 seconds
llite.lustre-ffff8e2d98ab4800.read_ahead_stats=
snapshot_time                       1787606704.626700106 secs.nsecs
start_time                          1787606697.483635455 secs.nsecs
elapsed_time                        7.143064651 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-ffff8e2d98ab4800.read_ahead_stats=clear
llite.lustre-ffff8e2d98ab4800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.22224 seconds
llite.lustre-ffff8e2d98ab4800.read_ahead_stats=
snapshot_time                       1787606711.217590551 secs.nsecs
start_time                          1787606704.653792363 secs.nsecs
elapsed_time                        6.563798188 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-ffff8e2d98ab4800.max_read_ahead_whole_mb=4