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.