Thx for your hint.


I've tried this instead :


<channel type='unix'>

      <source mode='bind' path='/opt/omnivision_1.agent'/>

      <target type='virtio' name='omnivision_1.agent'/>

      <address type='virtio-serial' controller='0' bus='0' port='2'/>



Then,  when starting the Guest I get  a pop up window showing this error message :


Error starting domain : internal error : process exited while connecting to monitor

Quemu-kvm –chardev socket id=channel1,path=/opt/omnivision_1_agent,server,nowait

Failed to bind socket : Permission denied



Did I miss something ?







-----Message d'origine-----
De : Michal Privoznik [mailto:mprivozn@redhat.com]
Envoyé : vendredi 28 août 2015 06:28
À : Jean-Pierre Ribeauville; libvirt-users@redhat.com
Objet : Re: [libvirt-users] Using unix-type channel ....


On 27.08.2015 15:48, Jean-Pierre Ribeauville wrote:

> Hi,


> I'm trying to use unix-type channel to send/receive datas between host and guest .


> Here are the steps I follow :


> 1) Adding these lines to expose a channel unix type to my guest 

> <channel type='unix'>

>       <source mode='bind' path='/var/lib/libvirt/qemu/omnivision_1.agent'/>

>       <target type='virtio' name='org.qemu.guest_agent.0'/>

>       <alias name='channel0'/>

>       <address type='virtio-serial' controller='0' bus='0' port='2'/>

>     </channel>



This won't fly. A channel with that name is special. It's guest agent socket that libvirt automatically connects to once domain is starting up. You need to provide a different name and everything should just work.