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

---
- name: devices validation
  block:
    - name: validate devices is actually a device
      parted:
        device: "{{ item }}"
        unit: MiB
      register: devices_parted
      with_items: "{{ devices }}"

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

- name: validate dedicated_device is/are actually device(s)
  parted:
    device: "{{ item }}"
    unit: MiB
  register: dedicated_device_parted
  with_items: "{{ dedicated_devices }}"
  when:
    - osd_scenario == 'non-collocated'

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

- 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