Thanks for your answer.
There was 2 problems
 1 - selinux problem : https://bugzilla.redhat.com/show_bug.cgi?id=1157185
 2 - A Network problem : I had to configure my switch port.

The 2 problems are solved.

Thanks for your help.

2014-11-14 17:05 GMT+01:00 Francesco Romani <fromani@redhat.com>:
----- Original Message -----
> From: "James James" <jreg2k@gmail.com>
> To: "Francesco Romani" <fromani@redhat.com>
> Cc: "users" <users@ovirt.org>
> Sent: Friday, 14 November, 2014 4:53:22 PM
> Subject: Re: [ovirt-users] VM migration/creation on host problem ...
>
> In /var/log/libvirt/libvirt.log :
>
> [root@ovirt-node2 ~]# tail -f /var/log/libvirt/libvirtd.log
> 2014-11-14 15:45:03.770+0000: 13769: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:45:18.791+0000: 13772: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:45:33.812+0000: 13772: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:45:48.867+0000: 13768: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:46:03.889+0000: 13772: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:46:18.911+0000: 13768: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
> 2014-11-14 15:46:21.595+0000: 13767: error : virNetSocketReadWire:1194 :
> End of file while reading data: Input/output error
> 2014-11-14 15:46:33.931+0000: 13770: error : virDomainObjGetMetadata:16650
> : metadata not found: Requested metadata element is not present
>
> Does anybody knows what that means ?

That and the selinux issue you reported previously reminded me of one bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1157185

further information:

https://bugzilla.redhat.com/show_bug.cgi?id=1150243#c17

Can't find more precise information at the moment :(

--
Francesco Romani
RedHat Engineering Virtualization R & D
Phone: 8261328
IRC: fromani