[libvirt-users] Hot-migration of OVS Vlan configuration

[Laine Stump]

On 07/13/2017 11:02 AM, Antoine Millet wrote:
> On Tue, 2017-07-11 at 14:56 -0400, Laine Stump wrote:
>> The cleanest way to make this work would be to enhance the function
>> qemuDomainChangeNet() to know what to do when it detects that the
>> vlan
>> tag was changed with a device update ("virsh update-device") - this
>> command can take effect immediately rather than waiting until the
>> next
>> time the domain is started, so the XML that is migrated would have
>> the
>> new vlan tag already in place (and also you wouldn't need to issue
>> the
>> ovs-vsctl command for it out of band any more!).
>>
>> Currently that function notices that the vlan tag has changed, but
>> this
>> just leads to an "UNSUPPORTED" error. If the network type is OVS,
>> then
>> it *should* work to just reconnect the bridge (libvirt sets the vlan
>> tag
>> as part of connecting to the ovs bridge).
>>
>> So how are your programming chops? :-)
>>
> Hi Laine,
>
> Thank you for the answer!
>
> I finally achieved to implement what you suggested. :-) I'll post the
> patch on the developer ML in a few days.


Nice! Please Cc me so it doesn't get lost in all my mail folders.