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---
- name: kill etcd daemon service
  shell: killall etcd
  ignore_errors: yes
  when: db_driver == "etcd"

- name: remove etcd service data
  file:
    path: "{{ etcd_dir }}"
    state: absent
    force: yes
  ignore_errors: yes
  when: db_driver == "etcd"

- name: remove etcd tarball
  file:
    path: "/tmp/{{ etcd_tarball }}"
    state: absent
    force: yes
  ignore_errors: yes
  when: db_driver == "etcd"

- name: kill osdslet daemon service
  shell: killall osdslet
  ignore_errors: yes

- name: kill osdsdock daemon service
  shell: killall osdsdock
  ignore_errors: yes

- name: clean all opensds build files
  file:
    path: "{{ opensds_build_dir }}"
    state: absent
    force: yes
  ignore_errors: yes

- name: clean all opensds configuration files
  file:
    path: "{{ opensds_config_dir }}"
    state: absent
    force: yes
  ignore_errors: yes

- name: clean all opensds log files
  file:
    path: "{{ opensds_log_dir }}"
    state: absent
    force: yes
  ignore_errors: yes

- name: check if it existed before cleaning a volume group
  shell: vgdisplay {{ vg_name }}
  ignore_errors: yes
  register: vg_existed
  when: enabled_backend == "lvm"

- name: remove a volume group if lvm backend specified
  shell: vgremove {{ vg_name }}
  when: enabled_backend == "lvm" and vg_existed.rc == 0

- name: check if it existed before cleaning a physical volume
  shell: pvdisplay {{ pv_device }}
  ignore_errors: yes
  register: pv_existed
  when: enabled_backend == "lvm"

- name: remove a physical volume if lvm backend specified
  shell: pvremove {{ pv_device }}
  when: enabled_backend == "lvm" and pv_existed.rc == 0

- name: stop cinder-standalone service
  shell: docker-compose down
  become: true
  args:
    chdir: "{{ cinder_data_dir }}/cinder/contrib/block-box"
  when: enabled_backend == "cinder"

- name: clean the volume group of cinder
  shell:
    _raw_params: |

      # _clean_lvm_volume_group removes all default LVM volumes
      #
      # Usage: _clean_lvm_volume_group $vg
      function _clean_lvm_volume_group {
          local vg=$1

          # Clean out existing volumes
          sudo lvremove -f $vg
      }

      # _remove_lvm_volume_group removes the volume group
      #
      # Usage: _remove_lvm_volume_group $vg
      function _remove_lvm_volume_group {
          local vg=$1

          # Remove the volume group
          sudo vgremove -f $vg
      }

      # _clean_lvm_backing_file() removes the backing file of the
      # volume group
      #
      # Usage: _clean_lvm_backing_file() $backing_file
      function _clean_lvm_backing_file {
          local backing_file=$1

          # If the backing physical device is a loop device, it was probably setup by DevStack
          if [[ -n "$backing_file" ]] && [[ -e "$backing_file" ]]; then
              local vg_dev
              vg_dev=$(sudo losetup -j $backing_file | awk -F':' '/'.img'/ { print $1}')
              if [[ -n "$vg_dev" ]]; then
                  sudo losetup -d $vg_dev
              fi
              rm -f $backing_file
          fi
      }

      # clean_lvm_volume_group() cleans up the volume group and removes the
      # backing file
      #
      # Usage: clean_lvm_volume_group $vg
      function clean_lvm_volume_group {
          local vg=$1

          _clean_lvm_volume_group $vg
          _remove_lvm_volume_group $vg
          # if there is no logical volume left, it's safe to attempt a cleanup
          # of the backing file
          if [[ -z "$(sudo lvs --noheadings -o lv_name $vg 2>/dev/null)" ]]; then
              _clean_lvm_backing_file {{ cinder_data_dir }}/${vg}.img
          fi
      }

      clean_lvm_volume_group {{cinder_volume_group}}

  args:
    executable: /bin/bash
  become: true
  when: enabled_backend == "cinder"