== sanity test 248c: verify whole file read behavior ===== 08:13:26 (1787746406)
llite.lustre-ffff8d0ef3693000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8d0ef3693000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.94729 seconds
llite.lustre-ffff8d0ef3693000.read_ahead_stats=
snapshot_time                       1787746416.840541346 secs.nsecs
start_time                          1787746408.137176489 secs.nsecs
elapsed_time                        8.703364857 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-ffff8d0ef3693000.read_ahead_stats=clear
llite.lustre-ffff8d0ef3693000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.6906 seconds
llite.lustre-ffff8d0ef3693000.read_ahead_stats=
snapshot_time                       1787746427.578679728 secs.nsecs
start_time                          1787746416.884856942 secs.nsecs
elapsed_time                        10.693822786 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-ffff8d0ef3693000.max_read_ahead_whole_mb=4