[libvirt-users] virsh update-device: need to clear network filters

[Andrey Korolyov]

On 04/30/2014 06:01 PM, Oleg Bondarev wrote:
> Hi,
> 
> Can anyone please help with the following: I have a running instance
> with interface
> 
>     <interface type='bridge'>
>       <mac address='fa:16:3e:ba:a4:67'/>
>       <source bridge='br100/>
>       <target dev='vnet0'/>
>       <model type='virtio'/>
>       <filterref filter='nova-instance-instance-00000001-fa163ebaa467'/>
>       <alias name='net0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
> 
> what I need is to clear network interface on the instance. I tried virsh
> update-device with following xml:
> 
>     <interface type='bridge'>
>       <mac address='fa:16:3e:ba:a4:67'/>
>       <source bridge='br100/>
>       <model type='virtio'/>
>     </interface>
> 
> but this results in the following error:
> $ sudo virsh update-device 13 xml.xml --persistent --live --config
> error: Failed to update device from xml.xml
> error: End of file while reading data: Input/output error
> error: Failed to reconnect to the hypervisor
> 
> and libvirt is restarted. Is it possible to clear nw filter at all?
> 
> Thanks,
> Oleg
> 
> 

Hello,

Just redefine specified filter at the runtime, ebtables rules should get
updated accordingly. I`ve used to do the same in my product more than a
year ago and can confirm that it worked fine.
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