== sanity test 248c: verify whole file read behavior ===== 05:42:44 (1787391764)
llite.lustre-ffff8fdbc9bb8800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8fdbc9bb8800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.26687 seconds
llite.lustre-ffff8fdbc9bb8800.read_ahead_stats=
snapshot_time                       1787391775.929655941 secs.nsecs
start_time                          1787391768.149178880 secs.nsecs
elapsed_time                        7.780477061 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-ffff8fdbc9bb8800.read_ahead_stats=clear
llite.lustre-ffff8fdbc9bb8800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.55564 seconds
llite.lustre-ffff8fdbc9bb8800.read_ahead_stats=
snapshot_time                       1787391786.210348411 secs.nsecs
start_time                          1787391775.947601438 secs.nsecs
elapsed_time                        10.262746973 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-ffff8fdbc9bb8800.max_read_ahead_whole_mb=4