---
- name: Check btrfs installation
  ansible.builtin.shell: |
    command -v btrfs
  become: true # btrfs is located in /usr/sbin, which means root permission is needed.
  changed_when: false
  failed_when: false
  register: "is_btrfs_installed"
  ignore_errors: true

- name: Install btrfs
  ansible.builtin.apt:
    name: "btrfs-progs"
    state: "present"
  become: true
  when: is_btrfs_installed.rc != 0

- name: Set hard disk path
  ansible.builtin.shell: |
    set -o pipefail
    ls -1 /dev/disk/by-path/*{{ vm['pass_through']['sata_controller']['address'] }}* | \
    grep -v '\.0$' | \
    sort
  changed_when: false
  register: "hdd_path_list"

- name: Check app_hdd filesystem already exists
  ansible.builtin.command: |
    blkid -L {{ storage['btrfs']['label'] }}
  register: is_app_data
  changed_when: false
  failed_when: false
  become: true

- name: Check disk number
  ansible.builtin.fail:
    msg: "Below 4 disks for RAID10, found {{ hdd_path_list.stdout_lines | length }}"
  when: (hdd_path_list.stdout_lines | length) < 4

- name: Set btrfs raid10 volume
  ansible.builtin.shell: |
    mkfs.btrfs -f \
    -L {{ storage['btrfs']['label'] }} \
    -d {{ storage['btrfs']['level'] }} \
    -m {{ storage['btrfs']['level'] }} \
    {{ hdd_path_list.stdout_lines | join(' ') }}
  become: true
  when:
    - is_app_data.rc != 0
    - (hdd_path_list.stdout_lines | length) >= 4
  changed_when: is_mkfs.rc == 0
  register: "is_mkfs"

- name: Mount btrfs raid10 volume
  ansible.posix.mount:
    path: "{{ storage['btrfs']['mount_point'] }}"
    src: "LABEL={{ storage['btrfs']['label'] }}"
    state: "mounted"
    fstype: "btrfs"
    opts: "defaults,noatime,compress=zstd:3,autodefrag,degraded,nofail"
  become: true

- name: Set hard disk path permissions
  ansible.builtin.file:
    path: "{{ storage['btrfs']['mount_point'] }}"
    state: "directory"
    owner: "{{ ansible_user }}"
    group: "svadmins"
    mode: "0770"
  become: true