zap_disks.yml

---
# These zap tasks are run on freshly reimaged cobbler_managed machines
# even when using the -stock profiles.  Therefore, testnode package
# installation hasn't happened yet so we install zap dependencies here.

- name: Make sure apt dependencies are installed
  apt:
    name: ['gdisk', 'dmsetup']
    state: present
  when: ansible_os_family == "Debian"

- name: Make sure rpm dependencies are installed
  package:
    name: ['gdisk', 'device-mapper']
    state: present
  when: (ansible_distribution == "RedHat" and rhsm_registered is defined and rhsm_registered == true) or
        (ansible_os_family == "RedHat" and ansible_distribution != "RedHat")

- name: Set root disk
  set_fact:
    root_disk: "{{ item.device|regex_replace('[0-9]+', '') }}"
  with_items: "{{ ansible_mounts }}"
  when: item.mount == '/'

- name: Compile list of non-root partitions
  shell: "lsblk --list --noheadings | grep part | grep -v {{ root_disk|regex_replace('/dev/', '') }} | awk '{ print $1 }'"
  register: non_root_partitions

- name: Unmount any non-root mountpoints
  mount:
    path: "{{ item.mount }}"
    state: unmounted
  with_items: "{{ ansible_mounts }}"
  when:
    - item.mount != '/' and
      not item.mount is match("/(boot|home|opt|root|srv|tmp|usr/local|var|.snapshots)")

## http://tracker.ceph.com/issues/20533
## Trusty version of wipefs lacks --force option
- name: Wipe filesystems on non-root partitions
  shell: "wipefs --force --all /dev/{{ item }} || wipefs --all /dev/{{ item }}"
  with_items: "{{ non_root_partitions.stdout_lines }}"
  when: non_root_partitions|length > 0

## See https://github.com/ceph/ceph-ansible/issues/759#issue-153248281
- name: Zap all non-root disks
  shell: "sgdisk --zap-all /dev/{{ item.key }} || sgdisk --zap-all /dev/{{ item.key }}"
  with_dict: "{{ ansible_devices }}"
  when:
    - item.key not in root_disk
    - '"loop" not in item.key'
    - '"ram" not in item.key'
    - '"sr" not in item.key'

## See https://tracker.ceph.com/issues/22354 and
## https://github.com/ceph/ceph/pull/20400
- name: Blow away lingering OSD data and FSIDs
  shell: "dd if=/dev/zero of=/dev/{{ item.key }} bs=1M count=110"
  with_dict: "{{ ansible_devices }}"
  when:
    - item.key not in root_disk
    - '"loop" not in item.key'
    - '"ram" not in item.key'
    - '"sr" not in item.key'

- name: Remove all LVM data
  shell: "dmsetup remove_all --force"
  register: removed_lvm_data
  until: "'Unable to remove' not in removed_lvm_data.stderr"
  retries: 5
  delay: 1
  ignore_errors: true

## See http://tracker.ceph.com/issues/21989
- name: Check for physical volumes
  shell: "pvdisplay | grep 'PV Name' | awk '{ print $3 }'"
  register: pvs_to_remove

- name: Remove physical volumes
  shell: "pvremove --force --force --yes {{ item }}"
  with_items: "{{ pvs_to_remove.stdout_lines }}"
  when:
    - pvs_to_remove is defined
    - pvs_to_remove.stdout_lines|length > 0