== sanity test 248c: verify whole file read behavior ===== 21:28:15 (1787794095)
llite.lustre-ffff9b8cd3e59800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff9b8cd3e59800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.99915 seconds
llite.lustre-ffff9b8cd3e59800.read_ahead_stats=
snapshot_time                       1787794105.529504307 secs.nsecs
start_time                          1787794097.878596658 secs.nsecs
elapsed_time                        7.650907649 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-ffff9b8cd3e59800.read_ahead_stats=clear
llite.lustre-ffff9b8cd3e59800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.42325 seconds
llite.lustre-ffff9b8cd3e59800.read_ahead_stats=
snapshot_time                       1787794113.425352521 secs.nsecs
start_time                          1787794105.541026347 secs.nsecs
elapsed_time                        7.884326174 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-ffff9b8cd3e59800.max_read_ahead_whole_mb=4