== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 13:16:43 (1790788603)
old_iused=446
 - open/close 500 (time 1790788620.45 total 10.01 last 49.95)
 - open/close 994 (time 1790788630.45 total 20.01 last 49.39)
total: 1000 open/close in 20.10 seconds: 49.76 ops/second
suppose current old_iused=1446
create_count=32, max_create_count=20000
 - unlinked 0 (time 1790788639 ; total 0 ; last 0)
total: 1000 unlinks in 9 seconds: 111.111115 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