== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 01:47:20 (1783144040)
old_iused=        449
total: 1000 open/close in 7.75 seconds: 129.09 ops/second
suppose current old_iused=1449
create_count=32, max_create_count=20000
 - unlinked 0 (time 1783144054 ; total 0 ; last 0)
total: 1000 unlinks in 4 seconds: 250.000000 unlinks/second
sleep 5 for ZFS MDS
sleep 5 for ZFS OST
Waiting for MDT destroys to complete
sleep 20 for ZFS MDS
        441 
waited 1 sec, old Iused 1449, new Iused         441