== sanity test 248c: verify whole file read behavior ===== 11:06:18 (1788361578)
llite.lustre-ffff9d4c12757800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9d4c12757800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.36721 seconds
llite.lustre-ffff9d4c12757800.read_ahead_stats=
snapshot_time                       1788361583.411508553 secs.nsecs
start_time                          1788361579.757671717 secs.nsecs
elapsed_time                        3.653836836 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-ffff9d4c12757800.read_ahead_stats=clear
llite.lustre-ffff9d4c12757800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.43177 seconds
llite.lustre-ffff9d4c12757800.read_ahead_stats=
snapshot_time                       1788361587.791397827 secs.nsecs
start_time                          1788361583.419476125 secs.nsecs
elapsed_time                        4.371921702 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-ffff9d4c12757800.max_read_ahead_whole_mb=4