[Users] Ovirt 3.3 GlusterFS Enable Service

Hello, I try to setup Ovirt with this configuration : 1 Engine Ovirt 3.3 (upgraded from 3.2) 2 Nodes Ovirt 3.3 Centos 6.5 GlusterFS I tried to follow the gluster documentation : http://www.gluster.org/2013/09/ovirt-3-3-glusterized/, using POSIXFS as I use CentOs and not Fedora. The problem is, I'm supposed to see a "Gluster Enable Service" in the configuration of cluster but I don't see it. When I first setup ovirt engine, I selected the "virt" Application_Mode. When I try "engine-setup", I don't have the question anymore. I changed it in database : in the vdc_options table, the option ApplicationMode is now 255 and AllowClusterWithVirtGlusterEnabled is True. Then I restarted ovirt-engine. However, I still don't see this option... So someone have any idea about what I can do to access to GlusterFS option ? Thank you, Regards, Grégoire Leroy