---
- name: "var : create containers dataset"
  community.general.zfs:
    name: "rpool/var/lib/containers"
    state: "present"
    extra_zfs_properties:
      "com.sun:auto-snapshot": "false"

- name: "var : create services root dataset"
  community.general.zfs:
    name: "{{ system_var_root_dataset }}"
    state: "present"

- name: "var : create containers zvol"
  community.general.zfs:
    name: "{{ system_var_containers_dataset }}"
    state: "present"
    extra_zfs_properties:
      volsize: "107374182400"   # 100G
      refreservation: "0"
      "com.sun:auto-snapshot": "false"

- name: "var : format containers zvol"
  community.general.filesystem:
    dev: "/dev/{{ system_var_containers_dataset }}"
    fstype: "ext4"
  register: system_datasets_containers_zvol_format

- block:

    - name: "var : get containers zvol uuid"
      ansible.builtin.command: >-
        blkid -s UUID -o value /dev/{{ system_var_containers_dataset }}
      register: system_datasets_containers_zvol_uuid

    - name: "var : system : add fstab entry and mount containers zvol"
      ansible.posix.mount:
        path: "{{ system_var_containers_directory }}"
        src: "UUID={{ system_datasets_containers_zvol_uuid.stdout }}"
        fstype: "ext4"
        state: "mounted"

  when:
    system_datasets_containers_zvol_format.changed

- name: "var : create data root dataset"
  community.general.zfs:
    name: "{{ system_var_data_dataset }}"
    state: "present"
    extra_zfs_properties:
      canmount: "off"

- name: "var : create home root dataset"
  community.general.zfs:
    name: "{{ system_var_home_dataset }}"
    state: "present"
    extra_zfs_properties:
      canmount: "off"