== sanity test 248c: verify whole file read behavior ===== 13:30:12 (1787851812)
llite.lustre-ffff9e9c034b9000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9e9c034b9000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.48262 seconds
llite.lustre-ffff9e9c034b9000.read_ahead_stats=
snapshot_time                       1787851821.734020113 secs.nsecs
start_time                          1787851814.329501970 secs.nsecs
elapsed_time                        7.404518143 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-ffff9e9c034b9000.read_ahead_stats=clear
llite.lustre-ffff9e9c034b9000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.96821 seconds
llite.lustre-ffff9e9c034b9000.read_ahead_stats=
snapshot_time                       1787851830.782293964 secs.nsecs
start_time                          1787851821.752823018 secs.nsecs
elapsed_time                        9.029470946 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-ffff9e9c034b9000.max_read_ahead_whole_mb=4