libvirt users - Jan 2016 - Re: virt-viewer and virt-manager problem

Hello,
here is my problem :
i migrated an old debian server, with kvm host and guests vm, on a new 
one  (wheezy to jessie).
Everything worked fine on this old server.

On the new server, i created a storage pool, copy the qcow2 guests files 
(from the old server) inside this storage pool, copy the xml guests 
files (from the old server) to /etc/libvirt/qemu ,
then virsh define guests and virsh start guests.
Every guests works fine.

My problem is about virt-viewer and virt-manager
when i connect from my station to my kvm host from ssh (ssh -X 
192.168.151.248). I cant use virt-manager or virt-user
virt-manager display all the guests but i cant display the guest itself 
or the guest informations
virt-viewer open a blanck window

when i do vncviewer 192.168.151.248:5906 it works fine

then i think the problem come from virt-viewer and virt-manager, but i 
cant see where is the problem.
Does someone could help to solve this problem.

Thanks

-- 
Pascal

On Fri, Jan 29, 2016 at 02:20:50PM +0100, Pascal Legrand
wrote:
> Hello,
Hi,
> here is my problem :
> i migrated an old debian server, with kvm host and guests vm, on a new 
> one  (wheezy to jessie).
> Everything worked fine on this old server.
> 
> On the new server, i created a storage pool, copy the qcow2 guests files 
> (from the old server) inside this storage pool, copy the xml guests 
> files (from the old server) to /etc/libvirt/qemu ,
> then virsh define guests and virsh start guests.
> Every guests works fine.
You should never modify/update/create files under the /etc/libvirt/qemu
directory.  The correct way to do this is virsh dumpxml $domain > $domain.xml
and virsh define $domain.xml.
> 
> My problem is about virt-viewer and virt-manager
> when i connect from my station to my kvm host from ssh (ssh -X 
> 192.168.151.248). I cant use virt-manager or virt-user
> virt-manager display all the guests but i cant display the guest itself 
> or the guest informations
> virt-viewer open a blanck window
Debug log from virt-manager (virt-manager --debug) would be helpful.  Btw: you
don't need to forwar X to your client, you can install
virt-manager/virt-viewer
directly on your client station and add ssh connection.
> 
> when i do vncviewer 192.168.151.248:5906 it works fine
> 
> then i think the problem come from virt-viewer and virt-manager, but i 
> cant see where is the problem.
> Does someone could help to solve this problem.
Is there anything else that you've changed, for example vnc_listen or
spice_listen in /etc/libvirt/qemu.conf?
> 
> Thanks
> 
> -- 
> Pascal
> 
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Helle and thanks for your answer


You should never modify/update/create files under the /etc/libvirt/qemu
directory.  The correct way to do this is virsh dumpxml $domain > 
$domain.xml
and virsh define $domain.xml.

I didnt modify or create anything i just copied xml file from the old 
server to the new server

Debug log from virt-manager (virt-manager --debug) would be helpful.
Cf virt-manager.debug

don't need to forwar X to your client, you can install 
virt-manager/virt-viewer
directly on your client station and add ssh connection.
i will made the test


 > Is there anything else that you've changed, for example vnc_listen or
 > spice_listen in /etc/libvirt/qemu.conf?
i didnt touch anything in this file



Thanks again
-- 
Pascal