ansible-edda/playbooks/tasks/services/a-common/01-zfs-datasets.yml

- name: Create service dataset
  zfs:
    name: rpool/var/lib/{{ ansible_hostname }}
    state: present

- name: Create a zvol for containers
  zfs:
    name: rpool/var/lib/{{ ansible_hostname }}/containers
    state: present
    extra_zfs_properties:
      volsize: "100G"
      refreservation: "none"
      "com.sun:auto-snapshot": "false"

- name: Format zvol with ext4
  filesystem:
    dev: /dev/rpool/var/lib/{{ ansible_hostname }}/containers
    fstype: ext4
  register: zvol_format

- block:

    - name: Get UUID of zvol
      command: blkid -s UUID -o value /dev/rpool/var/lib/{{ ansible_hostname }}/containers
      register: zvol_uuid

    - name: Add fstab entry and mount zvol
      mount:
        path: /var/lib/{{ ansible_hostname }}/containers
        src: UUID={{ zvol_uuid.stdout }}
        fstype: ext4
        state: mounted

  when:
    zvol_format is changed

- name: Create service data dataset
  zfs:
    name: rpool/var/lib/{{ ansible_hostname }}/data
    state: present
    extra_zfs_properties:
      canmount: "off"

- name: Create service home dataset
  zfs:
    name: rpool/var/lib/{{ ansible_hostname }}/home
    state: present
    extra_zfs_properties:
      canmount: "off"

- name: Create backup dataset
  zfs:
    name: hpool/backup
    state: present
    extra_zfs_properties:
      canmount: "off"
      "com.sun:auto-snapshot": "false"

- name: Create service backup dataset
  zfs:
    name: hpool/backup/{{ ansible_hostname }}
    state: present

- name: Create service data backup dataset
  zfs:
    name: hpool/backup/{{ ansible_hostname }}/data
    state: present
    extra_zfs_properties:
      canmount: "off"