[openstack-dev] [ironic] Booting IPA from cinder: Was: Summary of ironic sessions from Sydney

Chris Friesen chris.friesen at windriver.com
Fri Nov 24 20:17:00 UTC 2017

On 11/24/2017 10:23 AM, Julia Kreger wrote:
> Greetings Michael,
> I believe It would need to involve multiple machines at the same time.
> I guess there are two different approaches that I think _could_ be
> taken to facilitate this:
> 1) Provide a facility to use a specific volume as the "golden volume"
> to boot up for IPA, and then initiate copies of that volume. The
> downside that I see is the act of either copying the volume, or
> presenting a snapshot of it that will be deleted a little later. I
> think that is really going to depend on the back-end, and if the
> backend can handle it or not. :\

Don't most reasonable backends support copy-on-write for volumes?  If they do, 
then creating a mostly-read copy of the volume should be low-overhead.


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