Creating OEM images with unmounted and unformatted partition/volume?

[kastakhov]

Problem description

We're using KIWI for building different OEM images like OVA, QCOW2, VMDK and we need to have one raw volume (we use LVM) for storing metadata, which must be without FS and not included into fstab. Currently we just allocated additional space to VG and then with disk.sh script create this LVM, however it mostly looks like a workaround, but not a correct way.
So it will be cool if KIWI will have a feature like this.

Expected behaviour

KIWI can create raw volume which won't be mounted and formatted during image building process, xml config file will have some tag to handle it like raw="true" or so on.

• KIWI version: 9.24.61
• Operating system host version:
• Operating system target version:
• Open Build Service version (N/A if not using OBS):
• Koji version (N/A if not using Koji):