create-bricks.yml

---
- name: Create bricks
  hosts: moosefs_chunkserver
  become: true

  vars_files:
    - "vars/moosefs-settings.yml"

  pre_tasks:
    - name: Show disclaimer
      debug:
        msg:
          - "Welcome to MooseFS! This is a helper script, designed to allow you to automatically discover and prepare 'bricks' - disks on which
            MooseFS data is stored - for use with MooseFS."
          - ""
          - "IMPORTANT NOTE: You should be aware this procedure is not safe to run on servers with with non-MooseFS disks attached."
          - "It will try to avoid doing anything dangerous, but for the safety of your data, please only use this to initialise new chunkservers."
          - "For more information, feel free to contact the authors or ask the MooseFS team."

    # - name: Check if user is ready
    #   pause:
    #     prompt: "Are you sure you wish to continue? Press [ENTER] to continue or press [CTRL-C] to cancel."

    - name: Ensure dependencies are installed
      package:
        name: 
          - xfsprogs
          - e2fsprogs
        state: present

    - name: Print list of disks
      debug:
        msg: "{{ item }}"
      when:
        - not item.value.partitions
        - not item.value.holders
        - "'sd' in item.key or 'xvd' in item.key"
      loop: "{{ ansible_devices | dict2items }}"

    - name: Gather list of disks
      set_fact:
        disks: "{{ disks|default([]) + [item.key]}}"
      when:
        - not item.value.partitions
        - not item.value.holders
        - "'sd' in item.key or 'xvd' in item.key"
      loop: "{{ ansible_devices | dict2items }}"
      no_log: true

    # TODO: Check list of disks for mounted partitions.
    # We can check {{ ansible_mounts }}, then check if a device starts with item.key

    # - name: Print list
    #   pause:
    #     prompt: "The following disks will be affected: {{ disks }} Press [ENTER] to continue or press [CTRL-C] to cancel."

    - name: Create bricks (xfs)
      community.general.filesystem:
        fstype: xfs
        dev: "/dev/{{ item }}"
        state: present
      loop: "{{ disks }}"
      when: moosefs_brick_fstype|lower == 'xfs'

    - name: Create bricks (ext4)
      community.general.filesystem:
        fstype: xfs
        dev: "/dev/{{ item }}"
        state: present
      loop: "{{ disks }}"
      when: moosefs_brick_fstype|lower == 'ext4'

    - name: Gather facts again
      setup:

    - name: Gather UUIDs from bricks
      set_fact:
        uuids: "{{ uuids|default([]) + [ {'name': item.key, 'uuid': item.value.links.uuids} ]}}"
      when:
        - not item.value.partitions
        - not item.value.holders
        - "'sd' in item.key or 'xvd' in item.key"
        - item.key in disks
      loop: "{{ ansible_devices | dict2items }}"
      no_log: true

    - name: Create mountpoints for bricks
      file:
        path: "/mnt/mfsbrick.{{ item.uuid[0] }}"
        state: directory
        owner: root
        group: root
        mode: 0755
      loop: "{{ uuids }}"

    - name: Mount the bricks
      mount:
        path: "/mnt/mfsbrick.{{ item.uuid[0] }}"
        src: "UUID={{ item.uuid[0] }}"
        fstype: "{{ moosefs_brick_fstype|lower }}"
        opts: nofail
        state: mounted
      loop: "{{ uuids }}"

    - name: Print a success message
      debug:
        msg:
          - "Successfully created bricks. Your chunkservers should be ready to use."