In a non-clustered environment, are there any techniques available to move an instance from one server to another where the LXD versions differ?
I have configured identical networks, storage pools, and profiles on a Ubuntu 22.04 server with LXD 5.15 (snap) and a Debian 12 server with native LXD 5.02-5.
After configuring the remote tokens to ensure the servers can talk to each other, I tried an LXC move for a stopped container and it failed. The move was from 5.15 to 5.02. The error was:
Error: Failed instance creation: Failed creating instance record: Unknown configuration key: volatile.uuid.generation
I assumed the issue arises from config option differences between the two versions. If so, is there any way around this? More generally is there a way to export (backup tarball maybe?) and then import instances between servers running different LXD versions?
– Update –
This is now a non-issue. I did a back up of each of the services running inside my VMs/containers and then wiped out the cluster and reinstalled LXD. After rebuilding the cluster with all nodes at the same LXD version, all is working well.