== sanity test 248c: verify whole file read behavior ===== 09:05:12 (1787835912)
llite.lustre-ffff99cd4595e800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff99cd4595e800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.70486 seconds
llite.lustre-ffff99cd4595e800.read_ahead_stats=
snapshot_time                       1787835923.083977035 secs.nsecs
start_time                          1787835914.434769269 secs.nsecs
elapsed_time                        8.649207766 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-ffff99cd4595e800.read_ahead_stats=clear
llite.lustre-ffff99cd4595e800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.28498 seconds
llite.lustre-ffff99cd4595e800.read_ahead_stats=
snapshot_time                       1787835932.155574463 secs.nsecs
start_time                          1787835923.109286468 secs.nsecs
elapsed_time                        9.046287995 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-ffff99cd4595e800.max_read_ahead_whole_mb=4