tl:dr
I messed with the fstab tags in the config.xml to fix an Error #6000 but ended with Error #3008. Don't think it's to bad but don't know how to fix it. See file attached.
Long story:
After network card troubles (see here), I finally got OMV up and running. I created the raid and tried to mount it. Something went wrong and I ran into an error #6000. So I checked these forums and read that deleting the contents of the fstab tag might help. Went there, did that and obviously did something wrong. No problem, I thought, as I make a backup of the config.xml beforehand. So I overwrite the config.xml with my config.old, reboot and ... Error #3008.
So appearently I broke something - the fstab entry does look fishy - but am unable to fix it as I hardly understand all the things I'm doing here. I don't this it's broken beyond repair, on the contrary, but I probably need someone more experience to guide me through. I attached my config.xml if anyone would be so nice as to have a look at it.
Many thanks in advance!