pi-ansible/roles/os_config/tasks/disks.yml

# vim: ft=yaml.ansible
---
- name: (Create and) open LUKS containers
  luks_device:
    uuid: "{{ item.disk.uuid }}"
    passphrase: "{{ item.disk.luks_pw }}"
    name: "{{ item.name }}"
    type: luks2
    state: opened
  loop:
    - disk: "{{ secrets.hdd }}"
      name: "{{ hdd_name }}"
    - disk: "{{ secrets.ssd }}"
      name: "{{ ssd_name }}"

- name: Get list of mounted devices
  command: mount
  register: mounted_devices

- name: Create filesystems if they do not exist
  filesystem:
    dev: "{{ item }}"
    fstype: ext4
    state: present
  loop:
    - "/dev/mapper/{{ hdd_name }}"
    - "/dev/mapper/{{ ssd_name }}"
  when: mounted_devices.stdout | regex_search(item) is none

- name: Mount filesystems
  mount:
    src: "{{ item.dev }}"
    path: "{{ item.path }}"
    fstype: ext4
    fstab: /tmp/fstab.ansible
    state: mounted
  loop:
    - dev: "/dev/mapper/{{ hdd_name }}"
      path: "{{ hdd_mount_point }}"
    - dev: "/dev/mapper/{{ ssd_name }}"
      path: "{{ ssd_mount_point }}"
  when: mounted_devices.stdout | regex_search(item.dev) is none

- name: Check if swapfile is mounted
  shell: "swapon | grep -q '{{ ssd_mount_point }}/swapfile'"
  ignore_errors: true
  register: swap_mounted

- name: Create swapfile
  community.general.filesize:
    path: "{{ ssd_mount_point }}/swapfile"
    size: 2G
    blocksize: 512B
    owner: root
    mode: u=rw,go=
  when: swap_mounted.rc != 0

- name: Mount swapfile
  shell: |
    mkswap {{ ssd_mount_point }}/swapfile
    swapon {{ ssd_mount_point }}/swapfile
  when: swap_mounted.rc != 0