Ok, thanks for your input. The problem is that for now only lvm or raid devices
are supported directly. Neiter lvm on raid nor raid on lvm is currently supported.

The problem is that with the current solution, we are using live-media-path for
it, we can only specify one device to active. In your case it would be two
devices (raid and lvm) devices to active which is currently not supported.

Please keep in mind that we can't activate per default all devices as it may
create problems.

We would have to provide some additional arguments ad support recursive devices
like lvm on raid on raid (raid10).