== sanity test 248c: verify whole file read behavior ===== 22:08:23 (1788487703)
llite.lustre-ffff933b134ff000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff933b134ff000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.86346 seconds
llite.lustre-ffff933b134ff000.read_ahead_stats=
snapshot_time                       1788487711.718935141 secs.nsecs
start_time                          1788487705.160420959 secs.nsecs
elapsed_time                        6.558514182 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-ffff933b134ff000.read_ahead_stats=clear
llite.lustre-ffff933b134ff000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.61281 seconds
llite.lustre-ffff933b134ff000.read_ahead_stats=
snapshot_time                       1788487719.135154914 secs.nsecs
start_time                          1788487711.733747294 secs.nsecs
elapsed_time                        7.401407620 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-ffff933b134ff000.max_read_ahead_whole_mb=4