Disable SMT for ppc64 hypervisor and set VNC

On ppc64le KVM hypervisor SMT is enabled by default.
Adding the task to disable SMT to allow launching the instance in
running state.

Setting the default console type as noVNC for ppc64 arch.

Change-Id: I119455a499255725dd616eb488a1c67f828d925a

files/smt.conf

@@ -0,0 +1,10 @@
+#
+# A task to turn off smt
+#
+
+description "turn off the smt"
+
+start on runlevel [2345]
+
+task
+exec ppc64_cpu --smt=off

files/smt.service

@@ -0,0 +1,24 @@
+# Copyright 2016, IBM Corp.
+#
+# 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.
+[Unit]
+Description=Disable SMT
+After=syslog.target
+
+[Service]
+Type=simple
+ExecStart=/usr/sbin/ppc64_cpu --smt=off
+TimeoutSec=300
+
+[Install]
+WantedBy=multi-user.target

tasks/nova_compute_kvm.yml

@@ -79,4 +79,8 @@
     - nova-kvm
     - nova-libvirt
 
+- include: nova_disable_smt.yml
+  when:
+    - ansible_architecture == 'ppc64le'
+
 - include: nova_compute_kvm_virsh_net_remove.yml

tasks/nova_disable_smt.yml

@@ -0,0 +1,41 @@
+---
+# Copyright 2016 IBM Corp.
+#
+# 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: Disable SMT
+  command: /usr/sbin/ppc64_cpu --smt=off
+  failed_when: false
+  tags:
+    - kvm-disable-smt
+
+- name: Place the systemd init script
+  copy:
+    src: "smt.service"
+    dest: "/etc/systemd/system/smt.service"
+    mode: "0644"
+    owner: "root"
+    group: "root"
+  when:
+    - pid1_name == "systemd"
+  notify:
+    - Reload systemd daemon
+
+- name: Upstart script to disable SMT
+  copy:
+    src: "smt.conf"
+    dest: "/etc/init/smt.conf"
+  when:
+    - pid1_name != "systemd"
+  notify:
+    - Reload upstart init scripts

tasks/nova_pre_install.yml

@@ -111,3 +111,9 @@
   tags:
     - sudoers
     - nova-sudoers
+
+- name: Set default nova console for ppc64le
+  set_fact:
+    nova_console_type: "novnc"
+  when: ansible_architecture == 'ppc64le'
+