== sanity test 248c: verify whole file read behavior ===== 20:45:52 (1789605952)
llite.lustre-ffff9cbf607d8800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9cbf607d8800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.31405 seconds
llite.lustre-ffff9cbf607d8800.read_ahead_stats=
snapshot_time                       1789605961.250283052 secs.nsecs
start_time                          1789605954.194683268 secs.nsecs
elapsed_time                        7.055599784 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-ffff9cbf607d8800.read_ahead_stats=clear
llite.lustre-ffff9cbf607d8800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.90273 seconds
llite.lustre-ffff9cbf607d8800.read_ahead_stats=
snapshot_time                       1789605968.550231642 secs.nsecs
start_time                          1789605961.258093710 secs.nsecs
elapsed_time                        7.292137932 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-ffff9cbf607d8800.max_read_ahead_whole_mb=4