---
# tasks file for linstor_storage

- name: Configure LVM global_filter for DRBD safely
  ansible.builtin.lineinfile:
    path: /etc/lvm/lvm.conf
    insertafter: '^[ \t]*devices[ \t]*\{'
    # This regex ensures we only ever have ONE DRBD filter line, replacing the old one if it exists
    regexp: '^[ \t]*global_filter[ \t]*=.*r\|\^/dev/drbd\|'
    line: '        global_filter = [ "r|^/dev/drbd|", "r|^/dev/mapper/[lL]instor|" ]'
    state: present

- name: Ensure Volume Groups exist for raw disks
  community.general.lvg:
    vg: "{{ item.vg_name }}"
    pvs: "{{ item.targets[inventory_hostname] }}"
  loop: "{{ linstor_storage_pools }}"
  # Jinja2 magic: Only run this LVM task if the target string starts with '/dev/'
  when: item.targets[inventory_hostname].startswith('/dev/')

- name: Ensure LVM Thin Pools exist for raw disks
  community.general.lvol:
    vg: "{{ item.vg_name }}"
    lv: "{{ item.thin_name }}"
    size: "100%FREE"
    opts: "-T -Zn"
    shrink: false
  loop: "{{ linstor_storage_pools }}"
  when: item.targets[inventory_hostname].startswith('/dev/')

# ---------------------------------------------------------
# LINSTOR STORAGE REGISTRATION (Executed ONLY on Node 1)
# ---------------------------------------------------------

- name: Register Storage Pools in LINSTOR
  ansible.builtin.shell: |
    set -o pipefail

    # We use Jinja2 to write a custom bash loop for exactly the nodes in our inventory
    {% for host in groups['proxmox'] %}
    {% set target = item.targets[host] %}
    {% set lvm_path = (item.vg_name + '/' + item.thin_name) if target.startswith('/dev/') else target %}

    if ! linstor storage-pool list | grep -q " {{ host }} .* {{ item.pool_name }} "; then
      linstor storage-pool create lvmthin "{{ host }}" "{{ item.pool_name }}" "{{ lvm_path }}" > /dev/null
      echo "changed"
    fi
    {% endfor %}
  args:
    executable: /bin/bash
  register: linstor_storage_pool_create
  changed_when: "'changed' in linstor_storage_pool_create.stdout"
  loop: "{{ linstor_storage_pools }}"
  when: inventory_hostname == groups['proxmox'][0]

- name: Create Resource Groups and Volume Groups
  ansible.builtin.shell: |
    set -o pipefail
    if ! linstor resource-group list | grep -q " {{ item.rg_name }} "; then
      linstor resource-group create "{{ item.rg_name }}" --storage-pool "{{ item.pool_name }}" --place-count 3 > /dev/null
      linstor volume-group create "{{ item.rg_name }}" > /dev/null
      echo "changed"
    fi
  args:
    executable: /bin/bash
  register: linstor_storage_rg_create
  changed_when: "'changed' in linstor_storage_rg_create.stdout"
  loop: "{{ linstor_storage_pools }}"
  when: inventory_hostname == groups['proxmox'][0]