added host kernel modules as well as packages which should be on all hosts.

added \n

ensures that the kernel modules required on all hosts are loaded

added modules that compute will need

rpc_deployment/inventory/group_vars/all.yml

@@ -64,6 +64,13 @@ excluded_user_create:
   - rabbitmq
 
 
+## Kernel modules loaded on all hosts
+host_kernel_modules:
+  - scsi_dh
+  - dm_multipath
+  - dm_snapshot
+
+
 ## Base Packages
 apt_common_packages:
   - vlan
@@ -73,6 +80,9 @@ apt_common_packages:
   - git-core
   - rsyslog
   - lvm2
+  - dmeventd
+  - libkmod-dev
+  - libkmod2
   - libssl-dev
   - bridge-utils
   - cgroup-lite

rpc_deployment/inventory/group_vars/cinder_all.yml

@@ -89,4 +89,3 @@ container_packages:
   - libkmod-dev
   - libkmod2
   - dmeventd
-

rpc_deployment/roles/host_common/tasks/kernel_modules.yml

@@ -0,0 +1,27 @@
+---
+# 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: "Ensure kernel module(s)"
+  modprobe:
+    name: "{{ item }}"
+  with_items: host_kernel_modules
+  when: host_kernel_modules is defined
+
+- name: "Ensure kernel module(s) loaded at boot"
+  lineinfile:
+    dest: /etc/modules
+    line: "{{ item }}"
+  with_items: host_kernel_modules
+  when: host_kernel_modules is defined

rpc_deployment/roles/host_common/tasks/main.yml

@@ -16,3 +16,4 @@
 - include: sysstat.yml
 - include: updatehostsfile.yml
 - include: authorized_keys.yml
+- include: kernel_modules.yml

rpc_deployment/vars/config_vars/container_config_nova_compute.yml

@@ -50,6 +50,9 @@ kernel_modules:
   - nf_conntrack
   - x_tables
   - iscsi_tcp
+  - scsi_dh
+  - dm_multipath
+  - dm_snapshot
 
 sysctl_options:
   - { key: 'net.ipv4.conf.all.rp_filter', value: 0 }