== sanity test 248c: verify whole file read behavior ===== 10:37:10 (1786372630)
llite.lustre-ffff8a450cdb3000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8a450cdb3000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.01603 seconds
llite.lustre-ffff8a450cdb3000.read_ahead_stats=
snapshot_time                       1786372634.295185273 secs.nsecs
start_time                          1786372631.063191079 secs.nsecs
elapsed_time                        3.231994194 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-ffff8a450cdb3000.read_ahead_stats=clear
llite.lustre-ffff8a450cdb3000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.17283 seconds
llite.lustre-ffff8a450cdb3000.read_ahead_stats=
snapshot_time                       1786372638.163621546 secs.nsecs
start_time                          1786372634.301286648 secs.nsecs
elapsed_time                        3.862334898 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-ffff8a450cdb3000.max_read_ahead_whole_mb=4