Create OpenStack VMs in few seconds

open infra openinfradn at
Tue Mar 30 12:23:57 UTC 2021

On Thu, Mar 25, 2021 at 8:17 PM Sean Mooney <smooney at> wrote:

> This is a demo of a third party extention that was never upstreamed.
> nova does not support create a base vm and then doing a local live
> migration or restore for memory snapshots to create another vm.
> I just need to understand the risk and impact here but not desperately
trying to use the technology.
Let say there won't be multiple tenants, but different users supposed to
access stateless VMs.
Is it still secure?

> this approch likely has several security implciations that would not be
> accpeatable in a multi tenant enviornment.
> we have disucssed this type of vm creation in the past and determined
> that it is not a valid implematnion of spawn. a virt driver that
> precreate vms or copys an existing instance can be faster but that virt
> driver is not considered a compliant implementation.
> so in short there is no way to achive this today in a compliant
> openstack powered cloud.
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