Ansible-Bootstrap/roles/partitioning/tasks/btrfs.yml

---
- name: Setup BTRFS
  block:
    - name: Create btrfs filesystem in main volume
      community.general.filesystem:
        dev: "{{ install_drive }}{{ main_partition_suffix }}"
        fstype: btrfs
        force: true

    - name: Prepare BTRFS Subvolume
      ansible.posix.mount:
        path: /mnt
        src: "{{ install_drive }}{{ main_partition_suffix }}"
        fstype: btrfs
        opts: rw,relatime,compress=zstd:15,ssd,space_cache=v2,discard=async
        state: mounted

    - name: Enable quotas on Btrfs filesystem
      ansible.builtin.command: btrfs quota enable /mnt
      changed_when: result.rc == 0
      register: result

    - name: Make root subvolumes
      when: cis | bool or item.subvol not in ['var_log', 'var_log_audit']
      ansible.builtin.command: btrfs su cr /mnt/{{ '@' if item.subvol == 'root' else '@' + item.subvol }}
      changed_when: result.rc == 0
      register: result
      loop:
        - { subvol: root }
        - { subvol: home }
        - { subvol: var }
        - { subvol: var_log }
        - { subvol: var_log_audit }

    - name: Set quotas for subvolumes
      when: cis | bool or item.subvol not in ['var_log', 'var_log_audit']
      ansible.builtin.command: btrfs qgroup limit {{ item.quota }} /mnt/{{ '@' if item.subvol == 'root' else '@' + item.subvol }}
      changed_when: result.rc == 0
      register: result
      loop:
        - { subvol: home, quota: 2G }

    - name: Unmount Partition
      ansible.posix.mount:
        path: /mnt
        src: "{{ install_drive }}{{ main_partition_suffix }}"
        fstype: btrfs
        state: unmounted