== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 21:10:01 (1790730601)
old_iused=446
 - open/close 628 (time 1790730617.05 total 10.02 last 62.68)
total: 1000 open/close in 15.88 seconds: 62.96 ops/second
suppose current old_iused=1446
create_count=32, max_create_count=20000
 - unlinked 0 (time 1790730630 ; 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