Merge "Compute: Enable vGPU in Nova if exist on the host"

tasks/main.yml

@@ -73,6 +73,11 @@
     - always
     - nova-config
 
+- include_tasks: nova_vgpu_detect.yml
+  tags:
+    - always
+    - nova-config
+
 - include_tasks: nova_pre_install.yml
   tags:
     - nova-install

tasks/nova_vgpu_detect.yml

@@ -0,0 +1,30 @@
+---
+# Copyright 2018, Kontron.
+#
+# 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: Check if the mdev folder exist
+  stat: path=/sys/class/mdev_bus
+  register: mdev_folder
+
+- name: Get mdev info content and store as var
+  command: "/bin/sh -c 'ls -1 /sys/class/mdev_bus/*/mdev_supported_types'"
+  register: mdev
+  when: mdev_folder.stat.exists
+
+- name: Register a fact for nova enabled_vgpu_types
+  set_fact:
+    enabled_vgpu_types: "{{ mdev.stdout_lines | unique }}"
+  when:
+    - mdev.stdout_lines is defined
+    - mdev.stdout_lines | length > 0

templates/nova.conf.j2

@@ -345,3 +345,8 @@ server_groups = {{ nova_quota_server_groups }}
 
 [upgrade_levels]
 compute=auto
+
+{% if enabled_vgpu_types is defined %}
+[devices]
+enabled_vgpu_types = {{ enabled_vgpu_types | join(',') }}
+{% endif %}