[libvirt] [Xen-devel] [PATCH] libxl: Disallow save or migrate when host devices are assigned to a guest.
jfehlig at suse.com
Wed May 6 17:59:40 UTC 2015
Dario Faggioli wrote:
> On Fri, 2015-05-01 at 15:32 -0600, Jim Fehlig wrote:
>> Dario Faggioli wrote:
>>> I mean what NUMA configuration are we talking about, and when and under
>>> what circumstances would you consider it "migratable"?
>> E.g. if a domain is configured to use memory allocated from certain numa
>> nodes, we'd want to make sure the dest has sufficient memory amongst
>> those nodes.
> Right. I was asking because I'm interested in the problem at the libxl
> level. To the best of my knowledge, I don't think we do anything like
> that in libxl for now, and I still am not sure whether we should... :-)
>> But these were just examples of things we may want to check before
>> starting the migration. I suppose there are better examples wrt
>> storage, e.g. does the domain have an attached DVD, ...
> Do (if you know that) other drivers in libvirt do these kind of checks?
Yes. The qemu driver has quite extensive migration checks.
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