---
- name: Ensure the docker daemon is stopped
  service:
    name: docker
    state: stopped
  become: True
  notify: restart docker service

- name: Ensure loopback storage state is absent
  file:
    path: "{{ item }}"
    state: absent
  with_items:
    - "/var/lib/docker/devicemapper"
    - "/var/lib/docker/images"
    - "/var/lib/docker/containers"
  become: True

- block:
    - name: Ensure the docker storage data and metadata volumes exist
      lvol:
        vg: "{{ docker_storage_volume_group }}"
        lv: "{{ item.name }}"
        size: "{{ item.size }}"
        shrink: no
        state: present
      with_items:
        - name: "{{ docker_storage_volume_thinpool }}"
          size: "{{ docker_storage_volume_thinpool_size }}"
        - name: "{{ docker_storage_volume_thinpool_meta }}"
          size: "{{ docker_storage_volume_thinpool_meta_size }}"
      become: True

    - name: Ensure the docker storage volume is converted to a thinpool
      command: >
        lvconvert -y --zero n -c 512K
        --thinpool {{ docker_storage_volume_group }}/{{ docker_storage_volume_thinpool }}
        --poolmetadata {{ docker_storage_volume_group }}/{{ docker_storage_volume_thinpool_meta }}
      become: True

    - name: Ensure the docker storage metadata profile exists
      template:
        src: docker-thinpool.profile.j2
        dest: /etc/lvm/profile/docker-thinpool.profile
      become: True

    - name: Ensure the docker storage metadata profile is applied
      command: >
        lvchange --metadataprofile docker-thinpool
        {{ docker_storage_volume_group }}/{{ docker_storage_volume_thinpool }}
      become: True
  when: docker_storage_driver == 'devicemapper'