[oVirt][HC][HE] hosted-engine --deploy

[root@h4 ~]# hosted-engine --deploy
[ INFO  ] Stage: Initializing
[ INFO  ] Generating a temporary VNC password.
[ INFO  ] Stage: Environment setup
          Continuing will configure this host for serving as hypervisor and create a VM where you have to install the engine afterwards.
          Are you sure you want to continue? (Yes, No)[Yes]:
          Configuration files: []
          Log file: /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20160422125708-xxn80y.log
          Version: otopi-1.4.1 (otopi-1.4.1-1.el7)
[ INFO  ] Hardware supports virtualization
[ INFO  ] Stage: Environment packages setup
[ INFO  ] Stage: Programs detection
[ INFO  ] Stage: Environment setup
[ INFO  ] Stage: Environment customization

          --== STORAGE CONFIGURATION ==--

          During customization use CTRL-D to abort.
          Please specify the storage you would like to use (glusterfs, iscsi, fc, nfs3, nfs4)[nfs3]: glusterfs
[ INFO  ] Please note that Replica 3 support is required for the shared storage.
          Please specify the full shared storage connection path to use (example: host:/path): h4gfs.newvirt:/engine
[ INFO  ] GlusterFS replica 3 Volume detected
[ INFO  ] Installing on first host
[ INFO  ] GlusterFS replica 3 Volume detected

          --== SYSTEM CONFIGURATION ==--


          --== NETWORK CONFIGURATION ==--

[ ERROR ] Failed to execute stage 'Environment customization': <Fault 1: "<type 'exceptions.TypeError'>:cannot marshal None unless allow_none is enabled">
[ INFO  ] Stage: Clean up
[ INFO  ] Generating answer file '/var/lib/ovirt-hosted-engine-setup/answers/answers-20160422125727.conf'
[ INFO  ] Stage: Pre-termination
[ INFO  ] Stage: Termination
[ ERROR ] Hosted Engine deployment failed: this system is not reliable, please check the issue, fix and redeploy
          Log file is located at /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20160422125708-xxn80y.log