Description of problem:
Sometimes the action of creating a cluster is hanging.
Version-Release number of selected component (if applicable):
rhevm-3.1.0-31.el6ev.noarch
How reproducible:
50%
Steps to Reproduce:
1. New a DataCenter.
2. New a cluster for the DataCenter.
Actual results:
it hangs at the cluster creating page
Expected results:
create the cluster without hang.