== sanity test 248c: verify whole file read behavior ===== 16:38:11 (1788467891)
llite.lustre-ffff9bf2c98c6000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff9bf2c98c6000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.60413 seconds
llite.lustre-ffff9bf2c98c6000.read_ahead_stats=
snapshot_time                       1788467901.058343278 secs.nsecs
start_time                          1788467893.658904258 secs.nsecs
elapsed_time                        7.399439020 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-ffff9bf2c98c6000.read_ahead_stats=clear
llite.lustre-ffff9bf2c98c6000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.01792 seconds
llite.lustre-ffff9bf2c98c6000.read_ahead_stats=
snapshot_time                       1788467908.820467746 secs.nsecs
start_time                          1788467901.081954522 secs.nsecs
elapsed_time                        7.738513224 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-ffff9bf2c98c6000.max_read_ahead_whole_mb=4