playbooks/roles/configure-targethosts/tasks/create-loopback-cinder.yml

---
# ============LICENSE_START=======================================================
#  Copyright (C) 2019 The Nordix Foundation. All rights reserved.
# ================================================================================
# 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.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END=========================================================
- name: Run pvscan
  command: "pvscan"
  changed_when: false

- name: Remove cinder-volumes volume group if it exists
  lvg:
    vg: cinder-volumes
    state: absent
  ignore_errors: yes

- name: Check for cinder image
  stat:
    path: "{{ cinder_image_path }}"
  register: cinder_image
  ignore_errors: yes

- block:
  - name: Get loopback device
    command: "losetup -l | awk '/cinder.img/ {print $1}'"
    register: cinder_device
    ignore_errors: yes

  - name: Delete PV on loopback device
    command: "pvremove {{ cinder_device.stdout }}"
    ignore_errors: yes

  - name: Delete loopback device
    command: "losetup -d {{ cinder_device.stdout }}"
    ignore_errors: yes

  - name: Remove cinder image
    file:
      path: "{{ cinder_image_path }}"
      state: absent
    ignore_errors: yes
  when: cinder_image.stat.exists == True

- name: Get free loopback device
  command: "losetup -f"
  register: free_device

- set_fact:
    loopback_device_name: "{{ free_device.stdout }}"

- name: Create cinder image
  command: "fallocate -l {{ cinder_image_size }} {{ cinder_image_path }}"

- name: Setup loopback device
  command: "losetup {{ loopback_device_name }} {{ cinder_image_path }}"

- name: Create PV on the loopback device
  command: "pvcreate {{ loopback_device_name }}"

- name: Add cinder-volumes volume group
  lvg:
    vg: cinder-volumes
    pvs: "{{ loopback_device_name }}"

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