From ed4ed6aa20793dd13487b42e80e4886d35fdd768 Mon Sep 17 00:00:00 2001
From: Matt Thompson <mattt@defunct.ca>
Date: Wed, 9 Sep 2015 16:43:00 +0100
Subject: [PATCH] Allow testing of cinder multi backends w/ tempest

This commit adds the following variables to os_tempest role:

tempest_volume_backend1_name
tempest_volume_backend2_name
tempest_volume_multi_backend_enabled

This allows you to test that using multiple cinder backends
simultaneously works as expected.  A deployer may, for example, set
tempest_volume_backend1_name to 'lvm' and tempest_volume_backend2_name
to 'ceph'.

To avoid any surprises, tempest_volume_multi_backend_enabled defaults to
'False', which is the current tempest default value for multi_backend.

Closes-Bug: #1493911

Change-Id: I5eeb88d3e90b6ca046be96fb61a1cb6f4e6087ee
---
 playbooks/roles/os_tempest/defaults/main.yml         | 3 +++
 playbooks/roles/os_tempest/templates/tempest.conf.j2 | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/playbooks/roles/os_tempest/defaults/main.yml b/playbooks/roles/os_tempest/defaults/main.yml
index a7dba0850a..793cda74f8 100644
--- a/playbooks/roles/os_tempest/defaults/main.yml
+++ b/playbooks/roles/os_tempest/defaults/main.yml
@@ -63,7 +63,10 @@ tempest_swift_discoverable_apis:
   - slo
   - tempurl
 
+tempest_volume_backend1_name: backend1
+tempest_volume_backend2_name: backend2
 tempest_volume_backup_enabled: False
+tempest_volume_multi_backend_enabled: False
 
 tempest_main_group: tempest_all
 
diff --git a/playbooks/roles/os_tempest/templates/tempest.conf.j2 b/playbooks/roles/os_tempest/templates/tempest.conf.j2
index c693bb2c37..753cbb13e7 100644
--- a/playbooks/roles/os_tempest/templates/tempest.conf.j2
+++ b/playbooks/roles/os_tempest/templates/tempest.conf.j2
@@ -191,9 +191,12 @@ run_validation = {{ tempest_compute_run_ssh }}
 
 [volume]
 endpoint_type = internalURL
-backend1_name = lvm
+# NOTE: These backends are only tested when multi_backend is enabled
+backend1_name = {{ tempest_volume_backend1_name }}
+backend2_name = {{ tempest_volume_backend2_name }}
 
 
 [volume-feature-enabled]
 backup = {{ tempest_volume_backup_enabled }}
 snapshot = false
+multi_backend = {{ tempest_volume_multi_backend_enabled }}