---
- hosts: all
  become: True
  name: Dummy to gather facts
  tasks:
    - shell: "systemctl stop docker"
    - name: Stop docker service
      systemd:
        name: docker
        state: stopped
    - name: remove volumes
      shell: "rm -rf /srv"

- hosts: cinder-storage
  become: True
  tasks:
    - name: wipe cinder storage.
      shell: "dd if=/dev/zero of={{ storage_volume }} bs=1M count=1 && sync"