Nicer use of variables.

---

- name: Find a mountpoint for {{ device }}

  # There can be multiple once with bind mounts or subvolumes, we only need

  # one.

  set_fact:

    # yamllint disable rule:line-length

    btrfs_mountpoint: |-

      {{ (ansible_facts.mounts|selectattr("device", "equalto", device)|first)["mount"] }}

    # yamllint enable rule:line-length

- name: Install btrfs packages

  apt:

    cache_valid_time: 3600

    src: btrfs_scrub.{{ item }}.j2

  vars: &vars

    name: '{{ device|replace("/", "_") }}'

    # yamllint disable rule:line-length

    mountpoint: |-

      {{ (ansible_facts.mounts|selectattr("device", "equalto", device)|first)["mount"] }}

    # yamllint enable rule:line-length

  tags: [scrub]

- name: Enable btrfs scrub timers

[Service]

Type=exec

ExecStart=mnpw --warn -- /usr/lib/nagios-btrfs/plugins/check_btrfs --mountpoint {{ btrfs_mountpoint }}

ExecStart=mnpw --warn -- /usr/lib/nagios-btrfs/plugins/check_btrfs --mountpoint {{ mountpoint }}