ceph-ansible/roles/ceph-validate/tasks/check_devices.yml

---
- name: devices validation
  block:
    - name: read information about the devices
      parted:
        device: "{{ item }}"
        unit: MiB
      register: parted_results
      with_items: "{{ devices }}"

    - name: fail when gpt header found on osd devices
      fail:
        msg: "{{ item.disk.dev }} has gpt header, please remove it."
      with_items: "{{ parted_results.results }}"
      when:
        - item.disk.table == 'gpt'
        - item.partitions | length == 0

    - name: get devices information
      parted:
        device: "{{ item }}"
        unit: MiB
      register: devices_parted
      failed_when: False
      with_items: "{{ devices }}"

    - name: fail if one of the devices is not a device
      fail:
        msg: "{{ item.item }} is not a block special file!"
      when: item.rc is defined
      with_items: "{{ devices_parted.results }}"
  when:
    - devices is defined

- name: get dedicated_device information
  parted:
    device: "{{ item }}"
    unit: MiB
  register: dedicated_device_parted
  failed_when: False
  with_items: "{{ dedicated_devices }}"
  when:
    - osd_scenario == 'non-collocated'

- name: fail if one of the dedicated_device is not a device
  fail:
    msg: "{{ item.item }} is not a block special file!"
  with_items: "{{ dedicated_device_parted.results }}"
  when:
    - osd_scenario == 'non-collocated'
    - item.rc is defined

- name: fail if number of dedicated_devices is not equal to number of devices
  fail:
    msg: "Number of dedicated_devices must be equal to number of devices. dedicated_devices: {{ dedicated_devices | length }}, devices: {{ devices | length }}"
  when:
    - osd_scenario == 'non-collocated'
    - dedicated_devices|length != devices|length