== sanity test 248c: verify whole file read behavior ===== 22:52:38 (1789267958)
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8dc1b1afd000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 12.0501 seconds
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=
snapshot_time                       1789267975.196777877 secs.nsecs
start_time                          1789267962.003387085 secs.nsecs
elapsed_time                        13.193390792 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-ffff8dc1b1afd000.read_ahead_stats=clear
llite.lustre-ffff8dc1b1afd000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.34435 seconds
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=
snapshot_time                       1789267983.386969698 secs.nsecs
start_time                          1789267975.216221737 secs.nsecs
elapsed_time                        8.170747961 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
Try 0 failed: whole file readahead took: 12.0501, greater than non: 6.34435
llite.lustre-ffff8dc1b1afd000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.61268 seconds
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=
snapshot_time                       1789267993.146214123 secs.nsecs
start_time                          1789267975.216221737 secs.nsecs
elapsed_time                        17.929992386 secs.nsecs
hits                                32764 samples [pages]
misses                              4 samples [pages]
zero_size_window                    2 samples [pages]
failed_to_fast_read                 6 samples [pages]
readahead_pages                     2 samples [pages] 16382 16382 32764
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=clear
llite.lustre-ffff8dc1b1afd000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.36935 seconds
llite.lustre-ffff8dc1b1afd000.read_ahead_stats=
snapshot_time                       1789268002.846108655 secs.nsecs
start_time                          1789267993.163343475 secs.nsecs
elapsed_time                        9.682765180 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 1
llite.lustre-ffff8dc1b1afd000.max_read_ahead_whole_mb=4