== sanity test 248c: verify whole file read behavior ===== 07:41:41 (1787830901)
llite.lustre-ffff8cbbe5be5000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8cbbe5be5000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.51175 seconds
llite.lustre-ffff8cbbe5be5000.read_ahead_stats=
snapshot_time                       1787830913.265833010 secs.nsecs
start_time                          1787830903.818559093 secs.nsecs
elapsed_time                        9.447273917 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-ffff8cbbe5be5000.read_ahead_stats=clear
llite.lustre-ffff8cbbe5be5000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.40036 seconds
llite.lustre-ffff8cbbe5be5000.read_ahead_stats=
snapshot_time                       1787830924.217183092 secs.nsecs
start_time                          1787830913.278890811 secs.nsecs
elapsed_time                        10.938292281 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-ffff8cbbe5be5000.max_read_ahead_whole_mb=4