== sanity test 248c: verify whole file read behavior ===== 19:26:32 (1787873192)
llite.lustre-ffff8f8e1092a000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8f8e1092a000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.21461 seconds
llite.lustre-ffff8f8e1092a000.read_ahead_stats=
snapshot_time                       1787873201.786318317 secs.nsecs
start_time                          1787873193.984972799 secs.nsecs
elapsed_time                        7.801345518 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-ffff8f8e1092a000.read_ahead_stats=clear
llite.lustre-ffff8f8e1092a000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.86885 seconds
llite.lustre-ffff8f8e1092a000.read_ahead_stats=
snapshot_time                       1787873211.777985840 secs.nsecs
start_time                          1787873201.819900150 secs.nsecs
elapsed_time                        9.958085690 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-ffff8f8e1092a000.max_read_ahead_whole_mb=4