I never heard about it, found https://getleon.ai/

Journactl doesn't work in unRAID.

So do the journalctl -p 4 -b on the host self.

I also use velero for backups.

That velero is https://velero.io/ and thanks for the advice.

Please elaborate how to overlay rootfs.

Yeah, like my car. Most of the time I'm the sole user. It gets me where I want to be.