[Openstack-operators] [openstack-dev] [nova] Would an api option to create an instance without powering on be useful?

Sean Mooney smooney at redhat.com
Fri Nov 30 21:28:39 UTC 2018


On Fri, 2018-11-30 at 09:40 -0500, Mohammed Naser wrote:
> 
> 
> On Fri, Nov 30, 2018 at 7:07 AM Matthew Booth <mbooth at redhat.com> wrote:
> > I have a request to do $SUBJECT in relation to a V2V workflow. The use
> > case here is conversion of a VM/Physical which was previously powered
> > off. We want to move its data, but we don't want to be powering on
> > stuff which wasn't previously on.
> > 
> > This would involve an api change, and a hopefully very small change in
> > drivers to support it. Technically I don't see it as an issue.
> > 
> > However, is it a change we'd be willing to accept? Is there any good
> > reason not to do this? Are there any less esoteric workflows which
> > might use this feature?
> 
> If you upload an image of said VM which you don't boot, you'd really be
> accomplishing the same thing, no?
> 
> Unless you want to be in a state where you want the VM to be there but
> sitting in SHUTOFF state
i think the intent was to have a vm ready to go with ips/ports, volumes
exctra all created so you can quickly start it when needed.
if that is the case another alternitive which might be more public
cloud freidly form a wallet perspecitve would be the ablity
to create a shelved isntace. that way all the ports ectra would be
logically created but it would not be consumeing any compute resources.
>  
> > Matt
> > -- 
> > Matthew Booth
> > Red Hat OpenStack Engineer, Compute DFG
> > 
> > Phone: +442070094448 (UK)
> > 
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> > OpenStack-operators at lists.openstack.org
> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
> 
> 
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