[Users] Storage domain issue iSCSI

Hi Everyone, I'm having an issue following a power cut, none of my 3 nodes (All Fedora 17 / oVirt 3.1) are able to attach the master Domain. in /var/log/messages I see the following on each node: Nov 29 17:15:41 hades vdsm Storage.StoragePool ERROR Requested master domain 68d8b0e2-c348-4cfe-a896-08c62d491dfb does not have expected version 3 it is version 4 Nov 29 17:15:41 hades vdsm TaskManager.Task ERROR Task=`f06fd1bb-46d1-47d7-80ca-c2e01becdc51`::Unexpected error Nov 29 17:15:41 hades vdsm Storage.Dispatcher.Protect ERROR {'status': {'message': "Wrong Master domain or its version: 'SD=68d8b0e2-c348-4cfe-a896-08c62d491dfb, pool=f1b40ecc-b6a9-44e7-92cb-0fdf445e3175'", 'code': 324}} I've tried reboots/restarts/node re-installs I can see the PV and the iSCSI sessions fine from the shell. As this is the master, none of my nodes will start. Any help would be great. Kind Regards Simon