---
# 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 ZFS backing storage
  hosts: localhost
  user: root
  become: true
  connection: local
  tasks:
    - block:
      - name: Install ZFS packages
        package:
          name: "{{ zfs_package[ansible_facts['distribution'] | lower] }}"
          state: present

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

      - name: Create sparse ZFS backing file
        command: "truncate -s 1024G /openstack/lxc-zfs.img"
        args:
          creates: /openstack/lxc-zfs.img
        register: lxc_zfs_create

      - name: Create the ZFS pool
        command: zpool create pool /openstack/lxc-zfs.img
        args:
          creates: /pool

      - name: Create the ZFS pool/lxc volume
        shell: "(zfs list | grep lxc) || zfs create -o mountpoint=/var/lib/lxc pool/lxc"
      when:
        - lxc_container_backing_store == 'zfs'
  vars:
    zfs_package:
      ubuntu: "zfsutils-linux"