== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 00:02:28 (1773201748)
old_iused=        447 
 - open/close 813 (time 1773201763.72 total 10.01 last 81.26)
total: 1000 open/close in 12.39 seconds: 80.73 ops/second
suppose current old_iused=1447
create_count=32, max_create_count=20000
 - unlinked 0 (time 1773201773 ; total 0 ; last 0)
total: 1000 unlinks in 8 seconds: 125.000000 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