Yup (although minutes seems long and depending on usage weekly might be fine). You can also combine it with updates which require going down anyway.

You’ll be wanting sudo ostree admin pin 1 seeing as 0 was broken. Double check with rpm-ostree status.

Proceed to rpm-ostree update, if that does nothing it means 0 is up to date, personally I’d just wait for a new update using the working deployment, but you can blow away 0 and get it again if you’re keen.

Basically, you want to shut down the database before backing up. Otherwise, your backup might be mid-transaction, i.e. broken. If it’s docker you can just docker-compose down it, backup, and then docker-compose up, or equivalent.