Re: [libvirt-users] Problems moving qemu machine to libvirt

Tuesday, 15 June 2010

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

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