- name: Pin the fstrim timer
  when: disk_maintenance.fstrim_on_calendar | default(none) is not none
  block:
    - name: Create the fstrim timer drop-in directory
      file:
        path: /etc/systemd/system/fstrim.timer.d
        state: directory

    - name: Set the fstrim timer schedule
      copy:
        dest: /etc/systemd/system/fstrim.timer.d/schedule.conf
        content: |
          [Timer]
          OnCalendar=
          OnCalendar={{ disk_maintenance.fstrim_on_calendar }}
          RandomizedDelaySec=0
          # A catch-up run after a boot or a timezone change would land at any time.
          Persistent=false
      register: fstrim_timer

    - name: Restart the fstrim timer
      when: fstrim_timer.changed
      systemd:
        name: fstrim.timer
        daemon_reload: yes
        state: restarted

- name: Create the fstrim service drop-in directory
  when: disk_maintenance.fstrim_mountpoints | default(none) is not none
  file:
    path: /etc/systemd/system/fstrim.service.d
    state: directory

- name: Set the fstrim mountpoints
  when: disk_maintenance.fstrim_mountpoints | default(none) is not none
  copy:
    dest: /etc/systemd/system/fstrim.service.d/mountpoints.conf
    content: |
      [Service]
      ExecStart=
      {% for m in disk_maintenance.fstrim_mountpoints %}
      ExecStart=/sbin/fstrim --verbose --quiet-unsupported {{ m }}
      {% endfor %}
  register: fstrim_mountpoints

- name: Trim every fstab filesystem
  when: disk_maintenance.fstrim_mountpoints | default(none) is none
  file:
    path: /etc/systemd/system/fstrim.service.d/mountpoints.conf
    state: absent
  register: fstrim_mountpoints_removed

- name: Reload systemd for the fstrim mountpoints
  when: fstrim_mountpoints.changed or fstrim_mountpoints_removed.changed
  systemd:
    daemon_reload: yes

- name: Schedule the monthly ZFS trim and scrub
  when: disk_maintenance.zfs_cron_time | default(none) is not none
  lineinfile:
    path: /etc/cron.d/zfsutils-linux
    regexp: '^\S+ \S+ (\S+ \* \* root .*/usr/lib/zfs-linux/{{ item }};.*)$'
    line: '{{ disk_maintenance.zfs_cron_time }} \1'
    backrefs: yes
  loop: [trim, scrub]