Preserve/Restore iscsi initiatorname file

Added logic to preserve and restore the iscsi initiator name file
as without it open-iscsi will automatically generate a new file
upon restarting which it will utilize to identify itself.

Change-Id: I2bba352ca990c4b96e390103afc684261e745eac

playbooks/step_preserve_iscsi_initiator.yml

@@ -0,0 +1,21 @@
+# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
+#
+# 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: "Ensure /mnt/state/etc/iscsi/ exists"
+  sudo: yes
+  file: path=/mnt/state/etc/iscsi/ state=directory mode=0755
+- name: "Backup /etc/iscsi/initiatorname.iscsi to /mnt/state/etc/iscsi/initiatorname.iscsi"
+  sudo: yes
+  command: cp -a /etc/iscsi/initiatorname.iscsi /mnt/state/etc/iscsi/initiatorname.iscsi

playbooks/step_restore_iscsi_initiator.yml

@@ -0,0 +1,21 @@
+# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
+#
+# 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: "Restoring the open-iscsi initiator name file"
+  sudo: yes
+  command: cp -a /mnt/state/etc/iscsi/initiatorname.iscsi /etc/iscsi/initiatorname.iscsi
+- name: "Restarting the open-iscsi service"
+  sudo: yes
+  service: name=open-iscsi state=restarted

playbooks/update_cloud.yml

@@ -501,6 +501,8 @@
   gather_facts: yes
   max_fail_percentage: 0
   tasks:
+    - include: step_preserve_iscsi_initiator.yml
+      when: instance_status == "ACTIVE"
     - include: step_preserve_password_file.yml
       when: instance_status == "ACTIVE"
     - include: step_update_rebuild_node.yml
@@ -523,7 +525,8 @@
   max_fail_percentage: 0
   tasks:
     - include: step_os-apply-config.yml
-    - pause: seconds=45 prompt="Giving the compute node sixty seconds to complete existing processes"
+    - include: step_restore_iscsi_initiator.yml
+    - pause: seconds=45 prompt="Giving the compute node forty-five seconds to complete existing processes"
       when: online_upgrade is not defined
     # Write out config files in as we might be getting in while the
     # system is starting up.