Add DB Management docs

Fixes bug 909064

Change-Id: Ifd477b345dfb03efe8e8e5befa03a0cb2a3c3ce8

doc/source/db.rst

@@ -0,0 +1,56 @@
+..
+      Copyright 2012 OpenStack, LLC
+      All Rights Reserved.
+
+      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.
+
+Database Management
+===================
+
+The default metadata driver for glance uses sqlalchemy, which implies there
+exists a backend database which must be managed. The ``glance-manage`` binary
+provides a set of commands for making this easier.
+
+
+Initializing an Empty Database
+------------------------------
+
+    glance-manage db_sync
+
+This will take an empty database and create the necessary tables.
+
+
+Determining the Database Version
+--------------------------------
+
+    glance-manage db_version
+
+This will print the version of a glance database.
+
+
+Upgrading an Existing Database
+------------------------------
+
+    glance-manage db_sync <VERSION>
+
+This will take an existing database and upgrade it to the specified VERSION.
+
+
+Downgrading an Existing Database
+--------------------------------
+
+    glance-manage downgrade <VERSION>
+
+This will downgrade an existing database from the current version to the
+specified VERSION.
+

doc/source/index.rst

@@ -50,8 +50,8 @@ Concepts
    statuses
    formats
 
-Using Glance
+Managing Glance
-============
+===============
 
 .. toctree::
    :maxdepth: 1
@@ -59,12 +59,20 @@ Using Glance
    installing
    controllingservers
    configuring
+   db
+   policies
+   cache
+   authentication
+
+Using Glance
+============
+
+.. toctree::
+   :maxdepth: 1
+
    glance
    glanceapi
    client
-   authentication
-   policies
-   cache
 
 Developer Docs
 ==============