From 136f050aae679cde522663f02bef75d486000906 Mon Sep 17 00:00:00 2001
From: Stepan Rogov <srogov@mirantis.com>
Date: Fri, 26 Sep 2014 15:00:45 +0400
Subject: [PATCH] Use vSphere Datastore backend for Glance with vCenter

Change-Id: I596dbc8f383816a3b50187ce67e0f252b37dfabb
Blueprint: vsphere-glance-backend
---
 specs/6.0/vsphere-glance-backend.rst | 153 +++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 specs/6.0/vsphere-glance-backend.rst

diff --git a/specs/6.0/vsphere-glance-backend.rst b/specs/6.0/vsphere-glance-backend.rst
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+..
+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+=====================================================
+Use vSphere Datastore backend for Glance with vCenter
+=====================================================
+
+https://blueprints.launchpad.net/fuel/+spec/vsphere-glance-backend
+
+Fuel will be able to deploy OpenStack with vSphere Datastore support as glance
+backend.
+
+Problem description
+===================
+
+Fuel doesn't support deployment with vSphere Datastore as glance backend, but
+OpenStack already supports this feature. [0]
+For users using vmware vCenter/ESX, it would be great and comfortably(for
+simplicity of administration) to store openstack data(images, disks, etc.)
+in vCenter/ESX storages.
+
+Proposed change
+===============
+
+Add this case in puppet manifetst and add "vsphere" option for Glance backend
+and disable Swift installation in HA mode.
+Add options to connect to this backend in UI:
+
+* In wizard in Storage Backends add vCenter/ESX button for Glance.
+
+* In Setting tab in Storage section add vCenter/ESX connetion options fields.
+
+  * You can also use ESX host as Glance backend by setting "ha-datacenter" in
+    the "Datacenter name" field.
+
+Alternatives
+------------
+
+If not, users can be use as a backend: local storage, Ceph, Swift. Even if
+users have a large vCenter/ESX datastores, we force them to allocate the extra
+space on their compute nodes for images and snapshots or manually configure
+Glance datastores for their vCenter/ESX environment.
+
+Data model impact
+-----------------
+
+None
+
+REST API impact
+---------------
+
+None
+
+Upgrade impact
+--------------
+
+None
+
+Security impact
+---------------
+
+None
+
+Notifications impact
+--------------------
+
+None
+
+Other end user impact
+---------------------
+
+User must choose in wizard vCenter/ESX type backend for Glance.
+And to fill the connection settings in Setting tab in Storage section.
+
+Performance Impact
+------------------
+
+None
+
+Other deployer impact
+---------------------
+
+None
+
+Developer impact
+----------------
+
+None
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Primary assignee:
+  srogov (Stepan Rogov)
+
+Other contributors:
+  None
+
+Work Items
+----------
+
+* Set up the dev environment with one vCenter.
+* Writing puppet modules.
+* Writing UI enhancements.
+* Testing.
+
+Dependencies
+============
+
+https://blueprints.launchpad.net/glance/+spec/vmware-datastore-storage-backend
+
+Testing
+=======
+
+Perform manual acceptance testing according to acceptance criteria below:
+Acceptance criteria:
+
+#. To verify that user can create environment with CentOS or Ubuntu in simple
+or HA mode with different roles and to use as image storage - Glance with
+VMDK backend. For this in Fuel UI must be in Storages section 2 new options:
+
+   - vmware vcenter/esxi datastore for images(Glance)
+   - esxi datastore for images (Glance)
+
+#. User should have ability to upload OS image on VM in vmdk format or in
+iso format.
+
+#. User can ensure that generated snapshot from VM with different size can be
+successfully copied into glance that in our case placed inside
+vCenter's Datastore.
+
+#. OSTF tests according this feature must be passed.
+
+Documentation Impact
+====================
+
+The documentation should describe how to set up vCenter data stores for the
+Image Service backend.
+
+References
+==========
+
+[0] http://docs.openstack.org/trunk/config-reference/content/vmware-glance-backend.html
+
+https://blueprints.launchpad.net/glance/+spec/vmware-datastore-storage-backend
+
+http://docs.openstack.org/trunk/config-reference/content/vmware-glance-backend.html