I was wondering if it would be possible to create and restore backups using a snapshot of the data disks. I’ve checked out the backup tool first, but a backup to a local file seems to take a while (when I tested it it took 2.5 hours for 250 GiB), while snapshots are created quite fast. It doesn’t seem easy however to restore the database using these snapshots. I can mount the disks on new instances but then the following error is given:
The coordinator(s) have no record of this database. Either the coordinator
addresses are incorrect, the coordination state on those machines is missing, or
no database has been created.
Creating a new database, e.g. using ‘configure new double ssd’ results in all the data being deleted. Omitting ‘new’ doesn’t work as the db is unavailable.
Is it somehow possible to restore the coordination state on the machines, do I need to take a backup of non data folders as well?