== sanity test 248c: verify whole file read behavior ===== 16:27:21 (1784406441)
llite.lustre-ffff9caa9848e800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9caa9848e800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.81018 seconds
llite.lustre-ffff9caa9848e800.read_ahead_stats=
snapshot_time                       1784406445.177803896 secs.nsecs
start_time                          1784406442.102235198 secs.nsecs
elapsed_time                        3.075568698 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-ffff9caa9848e800.read_ahead_stats=clear
llite.lustre-ffff9caa9848e800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 2.942 seconds
llite.lustre-ffff9caa9848e800.read_ahead_stats=
snapshot_time                       1784406448.802707703 secs.nsecs
start_time                          1784406445.184999566 secs.nsecs
elapsed_time                        3.617708137 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-ffff9caa9848e800.max_read_ahead_whole_mb=4