== sanity test 248c: verify whole file read behavior ===== 17:35:38 (1786829738)
llite.lustre-ffff904346d60800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff904346d60800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.97813 seconds
llite.lustre-ffff904346d60800.read_ahead_stats=
snapshot_time                       1786829746.613490520 secs.nsecs
start_time                          1786829740.021466858 secs.nsecs
elapsed_time                        6.592023662 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-ffff904346d60800.read_ahead_stats=clear
llite.lustre-ffff904346d60800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.38824 seconds
llite.lustre-ffff904346d60800.read_ahead_stats=
snapshot_time                       1786829757.391946312 secs.nsecs
start_time                          1786829746.624850840 secs.nsecs
elapsed_time                        10.767095472 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-ffff904346d60800.max_read_ahead_whole_mb=4