Updating the advice in the above comment to account for bz 2278562

Recommend the following yaml example:
export DIB_BLOCK_DEVICE_CONFIG='''
- local_loop:
    name: image0
- partitioning:
    base: image0
    label: gpt
    partitions:
      - name: ESP
        type: 'EF00'
        size: 200MiB
        mkfs:
          type: vfat
          mount:
            mount_point: /boot/efi
            fstab:
              options: "defaults"
              fsck-passno: 2
      - name: BSP
        type: 'EF02'
        size: 8MiB
      - name: boot
        type: 'BC13C2FF-59E6-4262-A352-B275FD6F7172'
        size: 500MiB
        mkfs:
          type: ext4
          mount:
            mount_point: /boot
            fstab:
              options: "defaults"
              fsck-passno: 1
      - name: root
        flags: [ boot ]
        size: 100%
- lvm:
    name: lvm
    base: [ root ]
    pvs:
        - name: pv
          base: root
          options: [ "--force" ]
    vgs:
        - name: vg
          base: [ "pv" ]
          options: [ "--force" ]
    lvs:
        - name: lv_root
          base: vg
          extents: 23%VG
        - name: lv_tmp
          base: vg
          extents: 4%VG
        - name: lv_var
          base: vg
          extents: 45%VG
        - name: lv_log
          base: vg
          extents: 23%VG
        - name: lv_audit
          base: vg
          extents: 4%VG
        - name: lv_home
          base: vg
          extents: 1%VG
- mkfs:
    name: fs_root
    base: lv_root
    type: xfs
    label: "img-rootfs"
    mount:
        mount_point: /
        fstab:
            options: "rw,relatime"
            fsck-passno: 1
- mkfs:
    name: fs_tmp
    base: lv_tmp
    type: xfs
    mount:
        mount_point: /tmp
        fstab:
            options: "rw,nosuid,nodev,noexec,relatime"
            fsck-passno: 2
- mkfs:
    name: fs_var
    base: lv_var
    type: xfs
    mount:
        mount_point: /var
        fstab:
            options: "rw,relatime"
            fsck-passno: 2
- mkfs:
    name: fs_log
    base: lv_log
    type: xfs
    mount:
        mount_point: /var/log
        fstab:
            options: "rw,relatime"
            fsck-passno: 3
- mkfs:
    name: fs_audit
    base: lv_audit
    type: xfs
    mount:
        mount_point: /var/log/audit
        fstab:
            options: "rw,relatime"
            fsck-passno: 4
- mkfs:
    name: fs_home
    base: lv_home
    type: xfs
    mount:
        mount_point: /home
        fstab:
            options: "rw,nodev,relatime"
            fsck-passno: 2
'''