== sanity test 248c: verify whole file read behavior ===== 14:24:01 (1783967041)
llite.lustre-ffff910448cd6000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff910448cd6000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.67849 seconds
llite.lustre-ffff910448cd6000.read_ahead_stats=
snapshot_time                       1783967051.728713596 secs.nsecs
start_time                          1783967043.112362741 secs.nsecs
elapsed_time                        8.616350855 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-ffff910448cd6000.read_ahead_stats=clear
llite.lustre-ffff910448cd6000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.22224 seconds
llite.lustre-ffff910448cd6000.read_ahead_stats=
snapshot_time                       1783967062.466505501 secs.nsecs
start_time                          1783967051.760882649 secs.nsecs
elapsed_time                        10.705622852 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-ffff910448cd6000.max_read_ahead_whole_mb=4