== sanity test 248c: verify whole file read behavior ===== 22:30:56 (1788834656)
llite.lustre-ffff8eaf18342000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8eaf18342000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.84635 seconds
llite.lustre-ffff8eaf18342000.read_ahead_stats=
snapshot_time                       1788834664.651727892 secs.nsecs
start_time                          1788834658.205299845 secs.nsecs
elapsed_time                        6.446428047 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-ffff8eaf18342000.read_ahead_stats=clear
llite.lustre-ffff8eaf18342000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.08327 seconds
llite.lustre-ffff8eaf18342000.read_ahead_stats=
snapshot_time                       1788834672.599055564 secs.nsecs
start_time                          1788834664.674145982 secs.nsecs
elapsed_time                        7.924909582 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-ffff8eaf18342000.max_read_ahead_whole_mb=4