== sanity test 248c: verify whole file read behavior ===== 08:59:09 (1787662749)
llite.lustre-ffffa00711b64000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffffa00711b64000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.36941 seconds
llite.lustre-ffffa00711b64000.read_ahead_stats=
snapshot_time                       1787662758.042914932 secs.nsecs
start_time                          1787662750.860084652 secs.nsecs
elapsed_time                        7.182830280 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-ffffa00711b64000.read_ahead_stats=clear
llite.lustre-ffffa00711b64000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.69809 seconds
llite.lustre-ffffa00711b64000.read_ahead_stats=
snapshot_time                       1787662765.425240299 secs.nsecs
start_time                          1787662758.065909871 secs.nsecs
elapsed_time                        7.359330428 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-ffffa00711b64000.max_read_ahead_whole_mb=4