ceph-ansible/infrastructure-playbooks/filestore-to-bluestore.yml

# This playbook migrates an OSD from filestore to bluestore backend.
#
# Use it like this:
# ansible-playbook infrastructure-playbooks/filestore-to-bluestore.yml --limit <osd-node-to-migrate>
# *ALL* osds on nodes will be shrinked and redeployed using bluestore backend with ceph-volume

- hosts: "{{ osd_group_name }}"
  become: true
  serial: 1
  vars:
    delegate_facts_host: true
  tasks:
    - name: gather and delegate facts
      setup:
      delegate_to: "{{ item }}"
      delegate_facts: True
      with_items: "{{ groups[mon_group_name] }}"
      run_once: true
      when: delegate_facts_host | bool

    - import_role:
        name: ceph-defaults

    - import_role:
        name: ceph-facts

    - name: get ceph osd tree data
      command: "{{ container_exec_cmd }} ceph osd tree -f json"
      delegate_to: "{{ groups[mon_group_name][0] }}"
      register: osd_tree
      run_once: true

    - name: set_fact container_run_cmd
      set_fact:
        container_run_cmd: "{{ container_binary + ' run --rm --privileged=true --ulimit nofile=1024:4096 --net=host --pid=host --ipc=host -v /dev:/dev -v /etc/ceph:/etc/ceph -v /var/lib/ceph:/var/lib/ceph -v /var/run:/var/run --entrypoint=' if containerized_deployment else '' }}ceph-volume {{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else '' }}"

    - name: get ceph-volume lvm inventory data
      command: "{{ container_run_cmd }} --cluster {{ cluster }} inventory --format json"
      register: ceph_volume_inventory

    - name: set_fact inventory
      set_fact:
        inventory: "{{ ceph_volume_inventory.stdout | from_json }}"

    - name: set_fact ceph_disk_osds
      set_fact:
        ceph_disk_osds_devices: "{{ ceph_disk_osds_devices | default([]) + [item.path] }}"
      with_items: "{{ inventory }}"
      when:
        - not item.available | bool
        - "'Used by ceph-disk' in item.rejected_reasons"

    - name: ceph-disk prepared OSDs related tasks
      when: ceph_disk_osds_devices | default([]) | length > 0
      block:
        - name: get partlabel
          command: blkid "{{ item + 'p' if item is match('/dev/(cciss/c[0-9]d[0-9]|nvme[0-9]n[0-9]){1,2}$') else item }}"1 -s PARTLABEL -o value
          register: partlabel
          with_items: "{{ ceph_disk_osds_devices | default([]) }}"

        - name: get simple scan data
          command: "{{ container_run_cmd }} --cluster {{ cluster }} simple scan {{ item.item + 'p1' if item.item is match('/dev/(cciss/c[0-9]d[0-9]|nvme[0-9]n[0-9]){1,2}$') else item.item + '1' }} --stdout"
          register: simple_scan
          with_items: "{{ partlabel.results | default([]) }}"
          when: item.stdout == 'ceph data'
          ignore_errors: true

        - name: mark out osds
          command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd out {{ (item.0.stdout | from_json).whoami }}"
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          delegate_to: "{{ groups[mon_group_name][0] }}"
          run_once: true
          when: item.1.stdout == 'ceph data'

        - name: stop and disable old osd services
          service:
            name: "ceph-osd@{{ (item.0.stdout | from_json).whoami }}"
            state: stopped
            enabled: no
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          when: item.1.stdout == 'ceph data'

        - name: ensure dmcrypt for data device is closed
          command: cryptsetup close "{{ (item.0.stdout | from_json).data.uuid }}"
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          failed_when: false
          changed_when: false
          when:
            - item.1.stdout == 'ceph data'
            - (item.0.stdout | from_json).encrypted | default(False)

        - name: ensure dmcrypt for journal device is closed
          command: cryptsetup close "{{ (item.0.stdout | from_json).journal.uuid }}"
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          failed_when: false
          changed_when: false
          when:
            - item.1.stdout == 'ceph data'
            - (item.0.stdout | from_json).encrypted | default(False)

        - name: zap data devices
          command: "{{ container_run_cmd }} --cluster {{ cluster }} lvm zap --destroy {{ (item.0.stdout | from_json).data.path }}"
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          when: item.1.stdout == 'ceph data'

        - name: zap journal devices
          command: "{{ container_run_cmd }} --cluster {{ cluster }} lvm zap --destroy {{ (item.0.stdout | from_json).journal.path }}"
          with_together:
            - "{{ simple_scan.results }}"
            - "{{ partlabel.results }}"
          when:
            - item.1.stdout == 'ceph data'
            - (item.0.stdout | from_json).journal.path is defined

    - name: get ceph-volume lvm list data
      command: "{{ container_run_cmd }} --cluster {{ cluster }} lvm list --format json"
      register: ceph_volume_lvm_list

    - name: set_fact _lvm_list
      set_fact:
        _lvm_list: "{{ _lvm_list | default([]) + item.value }}"
      with_dict: "{{ (ceph_volume_lvm_list.stdout | from_json) }}"

    - name: ceph-volume prepared OSDs related tasks
      block:
        - name: mark out osds
          command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd out {{ item }}"
          with_items: "{{ (ceph_volume_lvm_list.stdout | from_json).keys() | list }}"
          delegate_to: "{{ groups[mon_group_name][0] }}"
          run_once: true

        - name: stop and disable old osd services
          service:
            name: "ceph-osd@{{ item }}"
            state: stopped
            enabled: no
          with_items: "{{ (ceph_volume_lvm_list.stdout | from_json).keys() | list }}"

        - name: ensure all dmcrypt for data and journal are closed
          command: cryptsetup close "{{ item['lv_uuid'] }}"
          with_items: "{{ _lvm_list }}"
          changed_when: false
          failed_when: false
          when: item['tags'].get('ceph.encrypted', 0) | int == 1

        - name: set_fact osd_fsid_list
          set_fact:
            osd_fsid_list: "{{ osd_fsid_list | default([]) + [item.tags['ceph.osd_fsid']] }}"
          with_items: "{{ _lvm_list }}"
          when: item.type == 'data'

        - name: zap ceph-volume prepared OSDs
          ceph_volume:
            action: "zap"
            osd_fsid: "{{ item }}"
          environment:
            CEPH_VOLUME_DEBUG: 1
            CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else None }}"
            CEPH_CONTAINER_BINARY: "{{ container_binary }}"
          loop: "{{ osd_fsid_list }}"
      when: _lvm_list is defined

    - name: set_fact osd_ids
      set_fact:
        osd_ids: "{{ osd_ids | default([]) + [item] }}"
      with_items:
        - "{{ ((osd_tree.stdout | from_json).nodes | selectattr('name', 'match', inventory_hostname) | map(attribute='children') | list) }}"


    - name: purge osd(s) from the cluster
      command: >
        {{ container_exec_cmd }} ceph --cluster {{ cluster }} osd purge {{ item }} --yes-i-really-mean-it        
      run_once: true
      delegate_to: "{{ groups[mon_group_name][0] }}"
      with_items: "{{ osd_ids }}"

    - name: purge /var/lib/ceph/osd directories
      file:
        path: "/var/lib/ceph/osd/{{ cluster }}-{{ item }}"
        state: absent
      with_items: "{{ osd_ids }}"

    - name: remove gpt header
      command: parted -s "{{ item }}" mklabel msdos
      with_items: "{{ devices + dedicated_devices | default([]) }}"

    - import_role:
        name: ceph-facts
    - import_role:
        name: ceph-defaults
    - import_role:
        name: ceph-handler
    - import_role:
        name: ceph-container-common
      when: containerized_deployment | bool
    - import_role:
        name: ceph-osd
      vars:
        osd_objectstore: bluestore