== sanity test 311: disable OSP precreate, and unlink should destroy objs ========================================================== 22:40:19 (1776998419)
old_iused=        446
 - open/close 748 (time 1776998433.59 total 10.01 last 74.74)
total: 1000 open/close in 13.53 seconds: 73.92 ops/second
suppose current old_iused=1446
create_count=32, max_create_count=20000
 - unlinked 0 (time 1776998444 ; 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