== sanity test 248c: verify whole file read behavior ===== 10:21:53 (1782483713)
llite.lustre-ffff8e6aa0592000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8e6aa0592000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.79775 seconds
llite.lustre-ffff8e6aa0592000.read_ahead_stats=
snapshot_time                       1782483717.121271737 secs.nsecs
start_time                          1782483714.114735466 secs.nsecs
elapsed_time                        3.006536271 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-ffff8e6aa0592000.read_ahead_stats=clear
llite.lustre-ffff8e6aa0592000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.05209 seconds
llite.lustre-ffff8e6aa0592000.read_ahead_stats=
snapshot_time                       1782483720.858669490 secs.nsecs
start_time                          1782483717.129109188 secs.nsecs
elapsed_time                        3.729560302 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-ffff8e6aa0592000.max_read_ahead_whole_mb=4