---
# Copyright 2017, BBC R&D
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Configure BTRFS backing storage
  hosts: localhost
  user: root
  become: true
  connection: local
  tasks:
    - block:
      - name: Install BTRFS packages
        package:
          name: "{{ btrfs_package[ansible_facts['pkg_mgr'] | lower] }}"
          state: present

      - name: Create base directories
        file:
          path: "{{ item }}"
          state: "directory"
        with_items:
          - /openstack
          - /var/lib/lxc

      - name: Create sparse lxc-btrfs file
        command: "truncate -s 1024G /openstack/lxc-btrfs.img"
        args:
          creates: /openstack/lxc-btrfs.img
        register: lxc_btrfs_create

      - name: Format the lxc-btrfs file
        filesystem:
          fstype: btrfs
          dev: /openstack/lxc-btrfs.img
        when: lxc_btrfs_create  is changed

      - name: Create the mount points, fstab entries and mount the file systems
        mount:
          name: /var/lib/lxc
          src: /openstack/lxc-btrfs.img
          fstype: btrfs
          state: mounted
      when:
        - lxc_container_backing_store == 'btrfs'
  vars:
    btrfs_package:
      apt: "btrfs-progs"