Stupid enough I did the apt dist-upgrade. Now omv-zfs is deinstalled. And I got stuck reinstalling it. zfsutils-linux depends on insserv < 1.18 but 1.14.0-5.4+b1 is to be installed. Stupid enough thats the version wich is installed at the moment. And to me it seems 1.14 is pre 1.18. so this dependency should not exsist? Any ideas on how to fix it?
Without restoring a omv backup?
I managed to repair. With the help of topic ZFS missing after update