[libvirt-users] Possible to edit/apply nwfilter at runtime?

Andre Goree andre at drenet.net
Fri Feb 16 18:44:10 UTC 2018


On 2018/02/16 12:12 pm, Daniel P. Berrangé wrote:
> On Fri, Feb 16, 2018 at 11:59:42AM -0500, Andre Goree wrote:
>> I'm trying to determine if it's possible to edit/attach/apply nwfilter 
>> rules
>> at runtime?  I.e., after a VM is already running, can I apply a 
>> nwfilter to
>> the VM and have it work without rebooting the machine?  Thus far, I've 
>> not
>> come across a way to do so, but I thought I'd ask here before I chase 
>> my
>> tail around Google.
> 
> Simply re-define the nwfilter in question using  virsh nwfilter-define.
> Any VMs using that filter will automatically update.
> 
> 
> Regards,
> Daniel
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Thank you for the quick reply.

As for adding the nwfilter to a guest that does not already have the 
filter, will that guest need to be rebooted?  Or can I add it to the 
guest via 'virsh edit'?
I ask becase, from what I can tell, adding a new filter via 'virsh edit' 
doesn't seem to work -- though it's good to know that once a 'filterref' 
has been defined in the guest, it can be adjusted on the fly.

-- 
Andre Goree
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