tripleo-validations/roles/ceph/tasks/ceph-pg.yaml

---
- name: Lookup ANSIBLE_HASH_BEHAVIOUR
  set_fact:
    hash_behavior: "{{ lookup('config', 'DEFAULT_HASH_BEHAVIOUR', on_missing='skip')|default('replace') }}"

- name: Fail unless ANSIBLE_HASH_BEHAVIOUR=merge
  fail:
    msg: |
      In order to simulate Tripleo Heat Template behavior this role requires
      that it be run with Ansible's hash_behaviour set to merge. Please
      re-run with 'export ANSIBLE_HASH_BEHAVIOUR=merge'"      
  when:
    - hash_behavior != 'merge'

- name: Fail if number of OSDs is not specified
  fail:
    msg: "Please pass the expected number of OSDs, e.g. '-e num_osds=36'"
  when: num_osds is not defined

- name: Get ceph_pool_default_size
  set_fact:
    ceph_pool_default_size: "{{ parameter_defaults['CephPoolDefaultSize']|default(3) }}"

- name: Get ceph_pool_default_pg_num
  set_fact:
    ceph_pool_default_pg_num: "{{ parameter_defaults['CephPoolDefaultPgNum']|default(128) }}"

- name: Set ceph_pools default
  set_fact:
    ceph_pools:
      - name: "{{ parameter_defaults['CinderBackupRbdPoolName']|default('backups') }}"
        application: rbd
      - name: "{{ parameter_defaults['CinderRbdPoolName']|default('volumes') }}"
        application: rbd
      - name: "{{ parameter_defaults['NovaRbdPoolName']|default('vms') }}"
        application: rbd
      - name: "{{ parameter_defaults['GlanceRbdPoolName']|default('images') }}"
        application: rbd
      - name: "{{ parameter_defaults['GnocchiRbdPoolName']|default('metrics') }}"
        application: openstack_gnocchi

- when:
    - parameter_defaults['CephPools'] is defined
    - (parameter_defaults['CephPools']|length) > 0
  block:
    - name: Get names of custom pools
      set_fact:
        custom_names: "{{ custom_names | default([]) + [ item.name ] }}"
      loop: "{{ parameter_defaults['CephPools'] }}"

    - name: Get names of default pools
      set_fact:
        default_names: "{{ default_names | default([]) + [ item.name ] }}"
      loop: "{{ ceph_pools }}"

    - name: Base updated ceph_pools list on custom list
      set_fact:
        new_ceph_pools: "{{ parameter_defaults['CephPools'] }}"

    - name: Add default pools not in custom list to updated ceph_pools list
      set_fact:
        new_ceph_pools: "{{ new_ceph_pools | default([]) + [item] }}"
      loop: "{{ ceph_pools }}"
      when:
        - item.name in default_names|difference(custom_names)

    - name: redefine ceph_pools based on updated ceph_pools list
      set_fact:
        ceph_pools: "{{ new_ceph_pools }}"

- name: Add CinderRbdExtraPools if provided and not in custom pool list
  set_fact:
    ceph_pools: "{{ ceph_pools | default([]) + [dict(name=item, application='rbd') ] }}"
  loop: "{{ parameter_defaults.CinderRbdExtraPools.split(',')|list }}"
  when:
    - parameter_defaults['CinderRbdExtraPools'] is defined
    - (parameter_defaults['CinderRbdExtraPools']|length) > 0
    - item not in custom_names|default([])

- name: Warn if deprecated Manila parameters are being used
  warn:
    msg: |
      One or more of following parameters is in use but is
      deprecated in Stein and newer; ManilaCephFSDataPoolPGNum,
      ManilaCephFSMetadataPoolPGNum, and ManilaCephFSShareBackendName      
  when:
    - (parameter_defaults['ManilaCephFSDataPoolPGNum'] is defined or
       parameter_defaults['ManilaCephFSMetadataPoolPGNum'] is defined or
       parameter_defaults['ManilaCephFSShareBackendName'] is defined)

- name: Add Manila MDS pools if provided and not in custom pool list
  set_fact:
    ceph_pools: "{{ ceph_pools | default([]) + [item] }}"
  loop:
    - name: "{{ parameter_defaults['ManilaCephFSDataPoolName']|default('manila_data') }}"
      application: cephfs
      pg_num: "{{ parameter_defaults['ManilaCephFSDataPoolPGNum']|default(128) }}"
      pgp_num: "{{ parameter_defaults['ManilaCephFSDataPoolPGNum']|default(128) }}"
    - name: "{{ parameter_defaults['ManilaCephFSMetadataPoolName']|default('manila_metadata') }}"
      application: cephfs
      pg_num: "{{ parameter_defaults['ManilaCephFSMetadataPoolPGNum']|default(128) }}"
      pgp_num: "{{ parameter_defaults['ManilaCephFSMetadataPoolPGNum']|default(128) }}"
  when:
    - resource_registry['OS::TripleO::Services::ManilaBackendCephFs'] is defined
    - resource_registry['OS::TripleO::Services::ManilaBackendCephFs'] != 'OS::Heat::None'
    - item.name not in custom_names|default([])

- name: Add RGW pools if requested unless in custom pool list (only for default zone)
  set_fact:
    ceph_pools: "{{ ceph_pools | default([]) + [dict(name=item, application='rgw') ] }}"
  loop:
    - .rgw.root
    - default.rgw.control
    - default.rgw.meta
    - default.rgw.log
    - default.rgw.buckets.index
    - default.rgw.buckets.data
  when:
    - resource_registry['OS::TripleO::Services::CephRgw'] is defined
    - resource_registry['OS::TripleO::Services::CephRgw'] != 'OS::Heat::None'
    - item not in custom_names|default([])

- name: Warn if an application is not set for each pool
  warn:
    msg: "The pool {{ item.name }} should have an application set, e.g. {'name': {{ item.name }}, 'application': rbd}"
  when: item.application is not defined
  loop: "{{ ceph_pools }}"

- name: Simulate OpenStack pool creation in proposed Ceph Cluster
  ceph_pools_pg_protection:
    num_osds: "{{ num_osds }}"
    ceph_pool_default_size: "{{ ceph_pool_default_size }}"
    ceph_pool_default_pg_num: "{{ ceph_pool_default_pg_num }}"
    ceph_pools: "{{ ceph_pools }}"
  register: pool_creation_simulation

- name: Fail if CephPools parameter is not configured correctly
  fail:
    msg: '{{ pool_creation_simulation["message"] }}'
  when: not pool_creation_simulation["valid_input"]

- name: Succeed if CephPools parameter will satisfy PG overdoce protection
  debug:
    msg: '{{ pool_creation_simulation["message"] }}'
  when: pool_creation_simulation["valid_input"]