Merge "Implement data migrations for rolling upgrades"

releasenotes/notes/cinder-data-migrations-ce31707c078b335c.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - The ``os_cinder`` role now provides for doing
+    online data migrations once the db sync has
+    been completed. The data migrations will not
+    be executed until the boolean variable
+    ``cinder_all_software_updated`` is true. This
+    variable will need to be set by the playbook
+    consuming the role.

tasks/cinder_db_setup.yml

@@ -17,4 +17,45 @@
   command: "{{ cinder_bin }}/cinder-manage db sync"
   become: yes
   become_user: "{{ cinder_system_user_name }}"
+  when:
+    - "ansible_local['openstack_ansible']['cinder']['need_db_sync'] | bool"
   changed_when: false
+  register: dbsync
+
+- name: Disable the db sync requirement
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_db_sync
+    value: False
+  when:
+    - dbsync | succeeded
+
+- name: Record the need for online data migrations
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_online_data_migrations
+    value: True
+  when:
+    - dbsync | succeeded
+
+- name: Perform online data migrations
+  command: "{{ cinder_bin }}/cinder-manage db online-data-migrations"
+  become: yes
+  become_user: "{{ cinder_system_user_name }}"
+  when:
+    - "(cinder_all_software_updated | default('no')) | bool"
+    - "ansible_local['openstack_ansible']['cinder']['need_online_data_migrations'] | bool"
+  changed_when: false
+  register: data_migrations
+
+- name: Disable the online migrations requirement
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_online_data_migrations
+    value: False
+  when:
+    - data_migrations | succeeded
+

tasks/cinder_install.yml

@@ -112,6 +112,36 @@
     virtualenv-tools --update-path=auto --reinitialize {{ cinder_bin | dirname }}
   when: cinder_get_venv | changed
 
+- name: Record the need for a db sync
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_db_sync
+    value: True
+  when: cinder_get_venv | changed or
+        cinder_venv_dir | changed or
+        install_packages | changed
+
+- name: Initialise the online data migration local fact
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_online_data_migrations
+    value: False
+  when: cinder_get_venv | changed or
+        cinder_venv_dir | changed or
+        install_packages | changed
+
+- name: Record the need for a service restart
+  ini_file:
+    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
+    section: cinder
+    option: need_service_restart
+    value: True
+  when: cinder_get_venv | changed or
+        cinder_venv_dir | changed or
+        install_packages | changed
+
 - name: Record the venv tag deployed
   ini_file:
     dest: "/etc/ansible/facts.d/openstack_ansible.fact"

tasks/main.yml

@@ -33,21 +33,28 @@
   tags:
     - cinder-install
 
+- name: refresh local facts
+  setup:
+    filter: ansible_local
+    gather_subset: "!all"
+  tags:
+    - cinder-config
+
 - include: cinder_post_install.yml
   tags:
     - cinder-config
 
 - include: cinder_db_setup.yml
   when:
-    - groups['cinder_all'] | length > 0
+    - groups['cinder_api'] | length > 0
-    - inventory_hostname == groups['cinder_all'][0]
+    - inventory_hostname == groups['cinder_api'][0]
   tags:
     - cinder-config
 
 - include: cinder_service_setup.yml
   when:
-    - groups['cinder_all'] | length > 0
+    - groups['cinder_api'] | length > 0
-    - inventory_hostname == groups['cinder_all'][0]
+    - inventory_hostname == groups['cinder_api'][0]
   tags:
     - cinder-config