libvirt users - Jun 2010 - Problems moving qemu machine to libvirt

Hi Erik,

thanks for the solution provided.
I tried that but unfortunately it spits out this error message:
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/engine.py", line 588,
in run_domain
>     vm.startup()
>   File "/usr/share/virt-manager/virtManager/domain.py", line 150,
in startup
>     self._backend.create()
>   File "/usr/lib/python2.6/dist-packages/libvirt.py", line 300,
in create
>     if ret == -1: raise libvirtError ('virDomainCreate() failed',
dom=self)
> libvirtError: internal error cannot parse QEMU version number in ''
Looks to me that libvirt does some version checks with the emulator-node and
don't get reliable output.

The wrapper script:

/etc/libvirt/kvmvde:
> #!/bin/bash
> exec /usr/bin/kvm "$@" \
>         -net nic,vlan=0,model=virtio,macaddr=52:54:61:44:21:23 \
>         -net vde,vlan=0,group=libvirtd,mode=0770,sock=/var/run/vde.ctl
The xml section:

...
>   <devices>
>     <emulator>/etc/libvirt/kvmvde</emulator>
>     <disk type='file' device='disk'>
>       <source
file='/var/lib/libvirt/images/vlxp01-gt/tmp7Jiyzz.qcow2'/>
>       <target dev='hda' bus='ide'/>
>     </disk>
...

Btw. is the bridge entry really necessary in the xml file?
I wonder if this wouldn't also work, but I am not at this step, currently:
=> http://libvirt.org/formatdomain.html#elementsNICSSlirp
"Generic ethernet connection"
>   ...
>   <devices>
>     <interface type='ethernet'/>
>     ...
>     <interface type='ethernet'>
>       <target dev='vnet7'/>
>       <script path='/etc/qemu-ifup-mynet'/>
>     </interface>
>   </devices>
>   ...
Perhaps this is a place to also start the vde hub?

On 10.06.2010 13:34, Erik de Castro Lopo wrote:
>     #!/bin/bash
>     exec /usr/bin/kvm $@ \
>         -net nic,vlan=0,model=rtl8139,macaddr=52:54:61:44:21:23 \
>         -net vde,vlan=0,group=vde2-net,mode=0770,sock=/var/run/kvm-vde-ctl
Any reason no to use the virtio driver?

Best,
Gunnar