Create OpenStack VMs in few seconds

Sean Mooney smooney at
Thu Mar 25 14:53:29 UTC 2021

On 25/03/2021 14:47, Sean Mooney 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.
> 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.

just to follow up on this see the note on vm launch

*Launch instance*

*Status: mandatory. *

*Notes: *Importing pre-existing running virtual machines on a host is 
considered out of scope of the cloud paradigm. Therefore this operation 
is mandatory to support in drivers.

the type of fast boot descibed in that video is not a valid implemation 
of creating a  server. instance.

> 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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