-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
</pre>
Should Qemu hang after start, check the brick logfile (in our default setup this would be <code>/var/log/glusterfs/bricks/var-data-gluster-volume-01.log</code>) for the following entries:
<pre>
[2013-08-04 11:02:34.022328] E [addr.c:152:gf_auth] 0-auth/addr: client is bound to port 50037 which is not privileged
[2013-08-04 11:02:34.022362] E [authenticate.c:239:gf_authenticate] 0-auth: no authentication module is interested in accepting remote-client (null)
[2013-08-04 11:02:34.022410] E [server-handshake.c:578:server_setvolume] 0-virtualization-server: Cannot authenticate client from foss-cloud-node-01-12502-2013/08/04-11:02:33:989625-virtualization-clie
nt-1-0 3.4.0
</pre>
This means that one of the configuration options from above didn't work and/or you forgot to restart <code>glusterd</code> or the volume.
= Caveats =