== sanity test 248c: verify whole file read behavior ===== 09:35:26 (1789306526)
llite.lustre-ffff979d42c51000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff979d42c51000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.85222 seconds
llite.lustre-ffff979d42c51000.read_ahead_stats=
snapshot_time                       1789306532.907682246 secs.nsecs
start_time                          1789306527.601118772 secs.nsecs
elapsed_time                        5.306563474 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-ffff979d42c51000.read_ahead_stats=clear
llite.lustre-ffff979d42c51000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.77827 seconds
llite.lustre-ffff979d42c51000.read_ahead_stats=
snapshot_time                       1789306538.994897253 secs.nsecs
start_time                          1789306532.928260174 secs.nsecs
elapsed_time                        6.066637079 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-ffff979d42c51000.max_read_ahead_whole_mb=4