Hi, I configured hostname and domainname for both systems, and added both to eachother's /etc/hosts. Hostname and /etc/hosts of systems should look like this? [root@cluster ~]# hostname cluster.pisolar [root@cluster ~]# cat /etc/hosts 127.0.0.1 cluster localhost.localdomain localhost localhost4 ::1 cluster localhost6.localdomain6 localhost6 192.168.0.67 fedorao.pisolar fedorao AND [root@fedorao ~]# hostname fedorao.pisolar [root@fedorao ~]# cat /etc/hosts 127.0.0.1 localhost.localdomain localhost localhost4 ::1 localhost6.localdomain6 localhost6 192.168.1.4 cluster.pisolar cluster (cluster has ip 192.168.1.4 and fedorao has ip 192.168.0.67) I also created a directory /media/nfs067 in machine fedorao.pisolar, shared it with cluster.pisolar using nfs, and mounted it in /media/nfs067, in case different paths be a problem to virsh and virt-manager. =D Then I created a VM with disk in /media/067 and tried to live migrate it with virt-manager 0.8.6. Got this error message: <blockquote style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;" class="gmail_quote"> Unable to migrate guest: operation failed: Migration unexpectedly failed Unable to migrate guest: operation failed: Migration unexpectedly failed Traceback (most recent call last): File "/usr/local/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/local/share/virt-manager/virtManager/migrate.py", line 523, in _async_migrate vm.migrate(dstconn, migrate_uri, rate, live, secure, meter=meter) File "/usr/local/share/virt-manager/virtManager/domain.py", line 1141, in migrate self._backend.migrate(destconn.vmm, flags, newname, interface, rate) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 518, in migrate if ret is None:raise libvirtError('virDomainMigrate() failed', dom=self) libvirtError: operation failed: Migration unexpectedly failed </blockquote> <div class="gmail_quote">Using virsh, I get the same error: <blockquote>[root@fedorao ~]# virsh migrate --live lol qemu+ssh://<a href="http://192.168.1.4/system">192.168.1.4/system</a> <a href="mailto:root@192.168.1.4">root@192.168.1.4</a>'s password: erro:operation failed: Migration unexpectedly failed </blockquote> I'm feeling a bit lost right now. =/ On Wed, Feb 2, 2011 at 10:14 AM, Daniel P. Berrange <<a href="mailto:berrange@redhat.com">berrange@redhat.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Wed, Feb 02, 2011 at 09:25:47AM -0300, Bruno Lamps wrote: > Updating the thread: > > I was using fedora 13 (kernel 2.6.32) in one machine and fedora 14 (kernel > 2.6.35) in other, so I made a fresh install in the first machina, so now > it's running fedora 14 with 2.6.35 x64 kernel, same as the second machine. > > Now when I try to migrate a VM through virt-manager, the following message > appears: > > Erro ao receber a validação de entrada: [Errno -2] Nome ou serviço > > desconhecido > > Traceback (most recent call last): > > File "/usr/local/share/virt-manager/virtManager/migrate.py", line 423, in > > finish > > dsthost = destconn.get_qualified_hostname() > > File "/usr/local/share/virt-manager/virtManager/connection.py", line 342, > > in get_qualified_hostname > > return gethostbyaddr(gethostname())[0] > > gaierror: [Errno -2] Nome ou serviço desconhecido > > > > In english, this error means something like "error receiving validation for > input: Error n 2 Unknown name or service. Traceback blablabla... </div>This suggests something is mis-configured in either DNS, or /etc/hosts or the OS hostname or a mix You need the configured 'hostname' to correctly resolve either via DNS or an /etc/hosts entry or both, and for it to point to a public IP of the machine, not 127.0.0.1 <div><div></div><div class="h5"> Daniel -- |: <a href="http://berrange.com" target="_blank">http://berrange.com</a> -o- <a href="http://www.flickr.com/photos/dberrange/" target="_blank">http://www.flickr.com/photos/dberrange/</a> :| |: <a href="http://libvirt.org" target="_blank">http://libvirt.org</a> -o- <a href="http://virt-manager.org" target="_blank">http://virt-manager.org</a> :| |: <a href="http://autobuild.org" target="_blank">http://autobuild.org</a> -o- <a href="http://search.cpan.org/%7Edanberr/" target="_blank">http://search.cpan.org/~danberr/</a> :| |: <a href="http://entangle-photo.org" target="_blank">http://entangle-photo.org</a> -o- <a href="http://live.gnome.org/gtk-vnc" target="_blank">http://live.gnome.org/gtk-vnc</a> :| </div></div></blockquote></div>