duplicity_playbooks/tasks/backup_volume.yml

---
- name: Find hard links in /mnt/volumes/{{ item }}
  ansible.builtin.command: "find '/mnt/volumes/{{ item }}' -type f -links +1"
  register: find_hard_links

# Duplicity does not support hard links
- name: Assert that there is no hard links in /mnt/volumes/{{ item }}
  ansible.builtin.assert:
    that:
      - find_hard_links.stdout | length == 0
    msg: "Duplicity does not support hard links."

- name: Backup /mnt/volumes/{{ item }} with duplicity
  ansible.builtin.command: "duplicity --num-retries 3 --full-if-older-than 1M --progress --archive-dir {{ ARCHIVE_DIR }} --name {{ item }} --allow-source-mismatch '/mnt/volumes/{{ item }}' swift://{{ lookup('env','BACKUP_WORKFLOW') }}"
  environment: "{{ DUPLICITY_ENVIRONMENT }}"

- name: Clean old duplicity backups for {{ item }}
  ansible.builtin.command: "duplicity remove-older-than 2M --archive-dir {{ ARCHIVE_DIR }} --name {{ item }} --allow-source-mismatch --force swift://{{ lookup('env','BACKUP_WORKFLOW') }}"
  environment: "{{ DUPLICITY_ENVIRONMENT }}"