As I now got most of the things I need in working order, I wanted to do a system backup to a USB-drive.
So I installed the plugin Backup and went to the tab called System backup.
The only setting was drive and path.
But when I run the tool it tries to do a backup of my zfs-mirrors too.
And the result is that the room on the usb is full long before the task is done.
Is there a howto, wiki or something on how to add settings for ignored folders for backups?
I tried to find something but "system" and "backup" is two frequent words...