NFS client configuration for cinder

This change adds the NFS client configuration in the cinder_volume hosts,
necessary when using a netapp backend over NFS.

etc/rpc_deploy/rpc_user_config.yml.example

@@ -188,6 +188,10 @@ storage_hosts:
           netapp_password: "{{ cinder_netapp_password }}"
           volume_driver: cinder.volume.drivers.netapp.common.NetAppDriver
           volume_backend_name: NETAPP_iSCSI
+      nfs_client:
+        nfs_shares_config: /etc/cinder/nfs_shares
+        shares:
+          - { ip: "{{ cinder_netapp_hostname }}", share: "/vol/cinder" }
 
 # User defined Logging Hosts, this should be a required group
 log_hosts:

rpc_deployment/playbooks/openstack/cinder-volume.yml

@@ -16,14 +16,17 @@
 - hosts: cinder_volume
   user: root
   roles:
+    - container_common
     - container_extra_setup
     - cinder_common
     - cinder_volume
     - cinder_device_add
     - cinder_backend_types
+    - nfs_client
     - init_script
   vars_files:
     - vars/config_vars/container_config_cinder_volume.yml
     - vars/openstack_service_vars/cinder_volume.yml
+    - vars/repo_packages/cinder.yml
   handlers:
     - include: handlers/services.yml

rpc_deployment/roles/cinder_common/templates/cinder.conf

@@ -52,6 +52,9 @@ enabled_backends={% for backend in cinder_backends|dictsort %}{{ backend.0 }}{%
 {% for key, value in backend_section.1.items() %}
 {{ key }}={{ value }}
 {% endfor %}
+{% if nfs_client is defined %}
+nfs_shares_config={{ nfs_client.nfs_shares_config }}
+{% endif %}
 
 {% endfor %}
 {% endif %}

rpc_deployment/roles/nfs_client/tasks/main.yml

@@ -0,0 +1,20 @@
+---
+# Copyright 2014, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: Create nfs_shares file
+  template:
+    src=nfs_shares.j2
+    dest="{{ nfs_client.nfs_shares_config }}"
+  when: nfs_client is defined

rpc_deployment/roles/nfs_client/templates/nfs_shares.j2

@@ -0,0 +1,3 @@
+{% for share in nfs_client.shares %}
+{{ share.ip }}: {{ share.share }}
+{% endfor %}

rpc_deployment/vars/repo_packages/cinder.yml

@@ -44,3 +44,4 @@ container_packages:
   - tgt
   - parted
   - qemu-utils
+  - nfs-common