Currently, all images with filesystem customizations are automatically converted to be LVM-based. Nevertheless, some customers and partners (e.g. MSFT) would like to generate images with raw partitioning.

Goal:

• Implement a new option in the Weldr API and the service API to be able to opt-out from the automatic "LVMification" of the image. The idea is two to have 3 partitioning modes:
  • auto-lvm (the default, keeps the current behaviour)
  • lvm (the image uses LVM even without extra partitions)
  • raw (the image uses raw partitioning even with extra partitions)

Acceptance Criteria:

• All goals are met.
• The new feature is demoed.

Notes:

• Since this is primarily a feature for MSFT (see RHELBU-2123), we should focus on the service firstly.
• In the future, we can easily extend the partitioning modes to e.g. btrfs.