== sanity test 248c: verify whole file read behavior ===== 08:38:00 (1789130280)
llite.lustre-ffff946150d1c800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff946150d1c800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.0825 seconds
llite.lustre-ffff946150d1c800.read_ahead_stats=
snapshot_time                       1789130291.075232916 secs.nsecs
start_time                          1789130283.344497533 secs.nsecs
elapsed_time                        7.730735383 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-ffff946150d1c800.read_ahead_stats=clear
llite.lustre-ffff946150d1c800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.21347 seconds
llite.lustre-ffff946150d1c800.read_ahead_stats=
snapshot_time                       1789130298.806994076 secs.nsecs
start_time                          1789130291.094857206 secs.nsecs
elapsed_time                        7.712136870 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-ffff946150d1c800.max_read_ahead_whole_mb=4