== sanity test 248c: verify whole file read behavior ===== 18:36:47 (1788215807)
llite.lustre-ffff94678543c000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff94678543c000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.37133 seconds
llite.lustre-ffff94678543c000.read_ahead_stats=
snapshot_time                       1788215817.685456827 secs.nsecs
start_time                          1788215809.577348667 secs.nsecs
elapsed_time                        8.108108160 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-ffff94678543c000.read_ahead_stats=clear
llite.lustre-ffff94678543c000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.61727 seconds
llite.lustre-ffff94678543c000.read_ahead_stats=
snapshot_time                       1788215827.607930014 secs.nsecs
start_time                          1788215817.706295423 secs.nsecs
elapsed_time                        9.901634591 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-ffff94678543c000.max_read_ahead_whole_mb=4