== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 01:28:00 (1784698080)
old_iused=        447
total: 1000 open/close in 9.94 seconds: 100.61 ops/second
suppose current old_iused=1447
create_count=32, max_create_count=20000
 - unlinked 0 (time 1784698097 ; 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
        439 
waited 1 sec, old Iused 1447, new Iused         439