== sanity test 248c: verify whole file read behavior ===== 06:02:53 (1773223373)
llite.lustre-ffff9d4705d9b000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff9d4705d9b000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.62109 seconds
llite.lustre-ffff9d4705d9b000.read_ahead_stats=
snapshot_time             1773223384.674098571 secs.nsecs
start_time                1773223375.247398716 secs.nsecs
elapsed_time              9.426699855 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-ffff9d4705d9b000.read_ahead_stats=clear
llite.lustre-ffff9d4705d9b000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.14341 seconds
llite.lustre-ffff9d4705d9b000.read_ahead_stats=
snapshot_time             1773223395.305348171 secs.nsecs
start_time                1773223384.687828467 secs.nsecs
elapsed_time              10.617519704 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-ffff9d4705d9b000.max_read_ahead_whole_mb=4