Create OpenStack VMs in few seconds

Sean Mooney smooney at
Thu Mar 25 14:47:09 UTC 2021

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.

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.

On 25/03/2021 12:21, open infra wrote:
> Hi,
> I was looking for a way to provision and connect to VMs within a few 
> seconds and ended up in the OpenStack Summit demo on 'OpenStack 
> Virtual Machine Quickly Available in One Second'.
> I highly appreciate if someone can provide a tutorial or related 
> documentation on how to achieve this?
> Regards,
> Danishka

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