== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 15:00:59 (1758740459)
old_iused=446
 - open/close 847 (time 1758740473.83 total 10.01 last 84.61)
total: 1000 open/close in 11.93 seconds: 83.85 ops/second
suppose current old_iused=1446
create_count=32, max_create_count=20000
 - unlinked 0 (time 1758740481 ; total 0 ; last 0)
total: 1000 unlinks in 7 seconds: 142.857147 unlinks/second
sleep 5 for ZFS MDS
sleep 5 for ZFS OST
Waiting for MDT destroys to complete
sleep 20 for ZFS MDS
438 
waited 1 sec, old Iused 1446, new Iused 438