Comment 7 for bug 1893661

Maybe it would be possible to abstract out the container, like:
- type: raid
  metadata: imsm
  container: /dev/md/imsm0
  name: imsm0
  devices:
    - /dev/nvme0n1p1
    - /dev/nvme1n1p1

- type: raid
  devices:
    - /dev/md/imsm0 # but need to get the number of real devices for -n
  name: mirror0
  level: 1