playbooks/roles/create-libvirt-vms/tasks/create-libvirt-volumes.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: Set path to the volume created
  set_fact:
    vm_volume_name: "{{ hostname }}-{{ disk.name }}.qcow2"
    vm_vol_path_prefix: "{{ ansible_libvirt_pools[libvirt_storage_pool].path }}/{{ hostname }}"

- name: Delete volume '{{ vm_volume_name }}' for vm '{{ hostname }}'
  command: >
    virsh --connect {{ vm_libvirt_uri }}
    vol-delete --pool {{ libvirt_storage_pool }} {{ vm_volume_name }}
  ignore_errors: yes

- name: Create volume '{{ vm_volume_name }}' for vm '{{ hostname }}'
  command: >
    virsh --connect {{ vm_libvirt_uri }}
      vol-create-as {{ libvirt_storage_pool }} {{ vm_volume_name }}
      {{ disk.disk_capacity }} --format qcow2 {{ prealloc|default("") }}

- name: Pre-touch volume '{{ vm_volume_name }}' for vm '{{ hostname }}'
  file:
    state: touch
    path: "{{ vm_vol_path_prefix }}-{{ disk.name }}.qcow2"
  when: vm_libvirt_uri == 'qemu:///system'

# NOTE(TheJulia): CentOS default installs with an XFS root, and chattr
# fails to set +C on XFS.  This could be more elegant, however the use
# case is for CI testing.
- name: Set copy-on-write for volume on non-CentOS systems
  command: chattr +C {{ vm_vol_path_prefix }}-{{ disk.name }}.qcow2
  ignore_errors: yes
  when:
    - ansible_distribution != 'CentOS'
    - vm_libvirt_uri == 'qemu:///system'

# vim: set ts=2 sw=2 expandtab: