Re: [Xen-devel] xen & MacVtap

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 08/01/14 12:27, Pasi Kärkkäinen wrote:
> On Wed, Jan 08, 2014 at 06:22:06PM +0800, topperxin wrote:
>>    Hi list
>>            As we all know, SR-IOV technology can improve VNIC's performance,
>>    while it can not support live migration. I get some information recently
>>    that on KVM+Virtio platform, if we use MacVtap + SR-IOV, the live
>>    migration could be done successfully. What I want to know is may I
>>    configure MacVtap on Xen?
>>           Any replies are welcome! Thanks a lot.
> 
> I think years ago (2009, perhaps) when SR-IOV was first demoed with Xen
> it was demoed with live migration.. it was a mixture of SR-IOV VF + Xen vif.
> 
> So with some toolstack/script hackery you can do it. (=use the vif pv driver 
> during migration, normally sr-iov vf).

You may find creating an active-backup bond in the guest useful.  The
active bond link is the SR-IOV device and the backup is the VIF.

I've not tried this myself.

David

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