I get to the web interface now... but I have no idea how create a new volume group.
I go to "Configuration" > "volume manager" and there should be an option "unit manager", but it isn't. So again... I cannot create volume groups.
How do you usually do it? Do I have to create volume groups somehow before installing open-e? The system is already complaining about not finding volume groups before I can even start it and manage stuff.