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Re: [Xen-devel] Question about SR-IOV migration

from [Ian Campbell] [Permanent Link][Original]
To: software NJU <njudroid@xxxxxxxxx>
Subject: Re: [Xen-devel] Question about SR-IOV migration
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Wed, 2 Nov 2011 21:48:39 +0900
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On Wed, 2011-11-02 at 06:07 -0400, software NJU wrote:
> Hello,
>   Can HVM using SR-IOV live-migrate to the other Host and still in
> SR-IOV? 
>   If SR-IOV can, does Xen support it now? And if so, where is the code
> for it.

It is not possible to live migrate a guest which has a PCI device passed
through to it.

However you can use PCI hotplug to unplug a device right before
migration and reintroduce another (possibly even different) device at
the other end. This requires hotplug to be correctly configured in your
guest to load the right drivers etc in response to hotplug events.

Ian.


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