== sanity test 248c: verify whole file read behavior ===== 17:03:10 (1790715790)
llite.lustre-ffff8f4c09a19000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8f4c09a19000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.35175 seconds
llite.lustre-ffff8f4c09a19000.read_ahead_stats=
snapshot_time                       1790715800.671491283 secs.nsecs
start_time                          1790715792.422706743 secs.nsecs
elapsed_time                        8.248784540 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-ffff8f4c09a19000.read_ahead_stats=clear
llite.lustre-ffff8f4c09a19000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.25071 seconds
llite.lustre-ffff8f4c09a19000.read_ahead_stats=
snapshot_time                       1790715807.913189973 secs.nsecs
start_time                          1790715800.702370377 secs.nsecs
elapsed_time                        7.210819596 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-ffff8f4c09a19000.max_read_ahead_whole_mb=4