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>
# If all osds on the node are using filestore backend, then *ALL* of them will be shrinked and redeployed using bluestore backend with ceph-volume.
#
# If a mix of filestore and bluestore OSDs is detected on the node, the node will be skipped unless you pass `force_filestore_to_bluestore=True` as an extra var.
# ie: ansible-playbook infrastructure-playbooks/filestore-to-bluestore.yml --limit <osd-node-to-migrate> -e force_filestore_to_bluestore=True

- hosts: "{{ osd_group_name }}"
  become: true
  serial: 1
  vars:
    delegate_facts_host: true
  tasks:
    - name: gather and delegate facts
      setup:
        gather_subset:
          - 'all'
          - '!facter'
          - '!ohai'
      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

    - name: import_role ceph-facts
      import_role:
        name: ceph-facts
        tasks_from: container_binary.yml

    - name: set_fact container_run_cmd, container_exec_cmd
      set_fact:
        container_run_cmd: "{{ container_binary + ' run --rm --privileged=true --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 | bool else '' }}ceph-volume {{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment | bool else '' }}"
        container_exec_cmd: "{{ container_binary + ' exec ceph-mon-' + hostvars[groups[mon_group_name][0]]['ansible_facts']['hostname'] if containerized_deployment | bool else '' }}"

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

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

    - name: get osd metadata
      command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd metadata osd.{{ item }} -f json"
      register: osd_metadata
      delegate_to: "{{ groups[mon_group_name][0] }}"
      run_once: true
      changed_when: false
      with_items: "{{ osd_ids }}"

    - name: set_fact _osd_objectstore
      set_fact:
        _osd_objectstore: "{{ _osd_objectstore | default([]) | union([(item.stdout | from_json).osd_objectstore]) }}"
      with_items: "{{ osd_metadata.results }}"

    - name: set_fact skip_this_node
      set_fact:
        skip_this_node: "{{ ('filestore' in _osd_objectstore and 'bluestore' in _osd_objectstore and not force_filestore_to_bluestore | default(False)) or ('filestore' not in _osd_objectstore) }}"

    - name: filestore to bluestore migration workflow
      when: not skip_this_node | bool
      block:
        - 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: umount osd data
              mount:
                path: "/var/lib/ceph/osd/{{ cluster }}-{{ (item.0.stdout | from_json).whoami }}"
                state: unmounted
              with_together:
                - "{{ simple_scan.results }}"
                - "{{ partlabel.results }}"
              when: item.1.stdout == 'ceph data'

            - name: umount osd lockbox
              mount:
                path: "/var/lib/ceph/osd-lockbox/{{ (item.0.stdout | from_json).data.uuid }}"
                state: unmounted
              with_together:
                - "{{ simple_scan.results }}"
                - "{{ partlabel.results }}"
              when:
                - item.1.stdout == 'ceph data'
                - (item.0.stdout | from_json).encrypted | default(False) | bool

            - 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) | bool

            - 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) | bool

            - 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 | default('{}') | 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 | default('{}') | 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 | default('{}') | from_json).keys() | list }}"

            - name: stop and disable ceph-volume services
              service:
                name: "ceph-volume@lvm-{{ item.tags['ceph.osd_id'] }}-{{ item.tags['ceph.osd_fsid'] }}"
                state: stopped
                enabled: no
              with_items: "{{ _lvm_list }}"
              when:
                - not containerized_deployment | bool
                - item.type == 'data'

            - name: mark down osds
              command: "{{ container_exec_cmd }} ceph --cluster {{ cluster }} osd down {{ item }}"
              with_items: "{{ (ceph_volume_lvm_list.stdout | default('{}') | from_json).keys() | list }}"
              delegate_to: "{{ groups[mon_group_name][0] }}"
              run_once: true

            - 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([]) + [{'osd_fsid': item.tags['ceph.osd_fsid'], 'destroy': (item.lv_name.startswith('osd-data-') and item.vg_name.startswith('ceph-')) | ternary(true, false), 'device': item.devices[0], 'journal': item['tags']['ceph.journal_device'] }] }}"
              with_items: "{{ _lvm_list }}"
              when: item.type == 'data'

            - name: zap ceph-volume prepared OSDs
              ceph_volume:
                action: "zap"
                osd_fsid: "{{ item.osd_fsid }}"
                destroy: false
              environment:
                CEPH_VOLUME_DEBUG: "{{ ceph_volume_debug }}"
                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: osd_fsid_list is defined

            - name: zap destroy ceph-volume prepared devices
              ceph_volume:
                action: "zap"
                data: "{{ item.device }}"
                destroy: true
              environment:
                CEPH_VOLUME_DEBUG: "{{ ceph_volume_debug }}"
                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:
                - osd_fsid_list is defined
                - item.destroy | bool

            - name: test if the journal device hasn't been already destroyed because of collocation
              stat:
                path: "{{ item.journal }}"
              loop: "{{ osd_fsid_list }}"
              register: journal_path
              when:
                - osd_fsid_list is defined
                - item.destroy | bool
                - item.journal is defined
                - item.journal not in (lvm_volumes | selectattr('journal', 'defined') | map(attribute='journal') | list)

            - name: zap destroy ceph-volume prepared journal devices
              ceph_volume:
                action: "zap"
                data: "{{ item.0.journal }}"
                destroy: true
              environment:
                CEPH_VOLUME_DEBUG: "{{ ceph_volume_debug }}"
                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 | zip(journal_path.results) | list }}"
              when:
                - osd_fsid_list is defined
                - item.0.destroy | bool
                - item.0.journal is defined
                - item.0.journal not in (lvm_volumes | selectattr('journal', 'defined') | map(attribute='journal') | list)
                - item.1.stat.exists | bool

            - name: ensure all dm are closed
              command: dmsetup remove "{{ item['lv_path'] }}"
              with_items: "{{ _lvm_list }}"
              changed_when: false
              failed_when: false
              when:
                - item['lv_path'] is defined
                  # Do not close mappers for non 'lvm batch' devices
                - devices | default([]) | length > 0

            - name: ensure all pv are removed
              command: "pvremove --yes {{ item.devices[0] }}"
              with_items: "{{ _lvm_list }}"
              failed_when: false
              when:
                - item.type == 'data'
                - item.lv_name.startswith('osd-data-') | bool
                - item.vg_name.startswith('ceph-') | bool
          when: _lvm_list is defined

        - name: set_fact osd_ids
          set_fact:
            osd_ids: "{{ osd_ids | default([]) + [item] }}"
          with_items:
            - "{{ ((osd_tree.stdout | default('{}') | 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: force osd_objectstore to bluestore
          set_fact:
            osd_objectstore: bluestore

        - name: refresh ansible devices fact
          setup:
            gather_subset:
              - 'all'
              - '!facter'
              - '!ohai'
            filter: ansible_devices
          when: osd_auto_discovery | bool

        - import_role:
            name: ceph-defaults
        - import_role:
            name: ceph-facts

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

        - name: update lvm_volumes configuration for bluestore
          when:
            - lvm_volumes | length > 0
            - not osd_auto_discovery | bool
          block:
            - name: reuse filestore journal partition for bluestore db
              set_fact:
                config_part: "{{ config_part | default([]) + [item | combine({'db': item.journal})] }}"
              with_items: "{{ lvm_volumes | selectattr('journal_vg', 'undefined') | list }}"

            - name: reuse filestore journal vg/lv for bluestore db
              set_fact:
                config_vglv: "{{ config_vglv | default([]) + [item | combine({'db': item.journal, 'db_vg': item.journal_vg})] }}"
              with_items: "{{ lvm_volumes | selectattr('journal_vg', 'defined') | list }}"

            - name: override lvm_volumes with bluestore configuration
              set_fact:
                lvm_volumes: "{{ config_part | default([]) + config_vglv | default([]) }}"

        - import_role:
            name: ceph-handler
        - import_role:
            name: ceph-container-common
          when: containerized_deployment | bool
        - import_role:
            name: ceph-config
        - import_role:
            name: ceph-osd

- name: final play
  hosts: "{{ osd_group_name }}"
  become: true
  gather_facts: false
  tasks:

    - import_role:
        name: ceph-defaults
    - name: report any skipped node during this playbook
      debug:
        msg: |
          "WARNING:"
          "This node has been skipped because OSDs are either"
          "all bluestore or there's a mix of filestore and bluestore OSDs"          
      when:
        - skip_this_node | bool