== sanity test 248c: verify whole file read behavior ===== 09:43:07 (1788529387)
llite.lustre-ffff9b245ee7b800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9b245ee7b800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.54972 seconds
llite.lustre-ffff9b245ee7b800.read_ahead_stats=
snapshot_time                       1788529395.847358239 secs.nsecs
start_time                          1788529388.768498549 secs.nsecs
elapsed_time                        7.078859690 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-ffff9b245ee7b800.read_ahead_stats=clear
llite.lustre-ffff9b245ee7b800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.56068 seconds
llite.lustre-ffff9b245ee7b800.read_ahead_stats=
snapshot_time                       1788529403.087089320 secs.nsecs
start_time                          1788529395.870034380 secs.nsecs
elapsed_time                        7.217054940 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-ffff9b245ee7b800.max_read_ahead_whole_mb=4