diff --git a/doc/admin-guide-cloud/blockstorage/section_consistency_groups.xml b/doc/admin-guide-cloud/blockstorage/section_consistency_groups.xml
new file mode 100644
index 0000000000..952ee231d9
--- /dev/null
+++ b/doc/admin-guide-cloud/blockstorage/section_consistency_groups.xml
@@ -0,0 +1,223 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<section xmlns="http://docbook.org/ns/docbook"
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="consistency-groups">
+    <title>Consistency Groups</title>
+    <para>Consistency group support is available in OpenStack Block Storage.
+        The support is added for creating snapshots of consistency groups.
+        This feature leverages the storage level consistency technology.
+        It allows snapshots of multiple volumes in the same consistency group
+        to be taken at the same point-in-time to ensure data consistency.
+        The consistency group operations can be performed using the Block Storage
+        command line.</para>
+    <note><para>Only Block Storage V2 API supports consistency groups. You can
+        specify <literal>--os-volume-api-version 2</literal> when using Block
+        Storage command line for consistency group operations.</para></note>
+    <para>Before using consistency groups, make sure the Block Storage driver
+        that you are running has consistency group support by reading the
+        Block Storage manual or consulting the driver maintainer. There are
+        a small number of drivers that have implemented this feature. The
+        default LVM driver does not support consistency groups yet because
+        the consistency technology is not available at the storage level.</para>
+    <para>Before using consistency groups, you must change policies for the
+        consistency group APIs in the <filename>/etc/cinder/policy.json
+        </filename> file. By default, the consistency group APIs are disabled.
+        Enable them before running consistency group operations.</para>
+    <para>Here are existing policy entries for consistency groups:</para>
+    <programlisting language="ini">"consistencygroup:create": "group:nobody",
+"consistencygroup:delete": "group:nobody",
+"consistencygroup:get": "group:nobody",
+"consistencygroup:get_all": "group:nobody",
+"consistencygroup:create_cgsnapshot" : "group:nobody",
+"consistencygroup:delete_cgsnapshot": "group:nobody",
+"consistencygroup:get_cgsnapshot": "group:nobody",
+"consistencygroup:get_all_cgsnapshots": "group:nobody",</programlisting>
+    <para>Change them to the following by removing <literal>group:nobody
+        </literal> to enable these APIs:</para>
+    <programlisting language="ini">"consistencygroup:create": "",
+"consistencygroup:delete": "",
+"consistencygroup:update": "",
+"consistencygroup:get": "",
+"consistencygroup:get_all": "",
+"consistencygroup:create_cgsnapshot" : "",
+"consistencygroup:delete_cgsnapshot": "",
+"consistencygroup:get_cgsnapshot": "",
+"consistencygroup:get_all_cgsnapshots": "",</programlisting>
+    <para>Restart Block Storage API service after changing policies.</para>
+    <para>The following consistency group operations are supported:</para>
+    <itemizedlist>
+        <listitem>
+            <para>Create a consistency group, given volume types.</para>
+            <note><para>A consistency group can support more than
+                one volume type. The scheduler is responsible for finding
+                a back end that can support all given volume types.</para>
+            </note>
+            <note><para>A consistency group can only contain volumes
+                hosted by the same back end.</para></note>
+            <note><para>A consistency group is empty upon its creation.
+                Volumes need to be created and added to it later.</para>
+            </note>
+        </listitem>
+        <listitem>
+            <para>Show a consistency group.</para>
+        </listitem>
+        <listitem>
+            <para>List consistency groups.</para>
+        </listitem>
+        <listitem>
+            <para>Create a volume and add it to a consistency group,
+                given volume type and consistency group id.</para>
+        </listitem>
+        <listitem>
+            <para>Create a snapshot for a consistency group.</para>
+        </listitem>
+        <listitem>
+            <para>Show a snapshot of a consistency group.</para>
+        </listitem>
+        <listitem>
+            <para>List consistency group snapshots.</para>
+        </listitem>
+        <listitem>
+            <para>Delete a snapshot of a consistency group.</para>
+        </listitem>
+        <listitem>
+            <para>Delete a consistency group.</para>
+        </listitem>
+    </itemizedlist>
+    <para>The following operations are not allowed if a volume
+        is in a consistency group:</para>
+    <itemizedlist>
+        <listitem>
+            <para>Volume migration.</para>
+        </listitem>
+        <listitem>
+            <para>Volume retype.</para>
+        </listitem>
+        <listitem>
+            <para>Volume deletion.</para>
+            <note><para>A consistency group has to be
+                deleted as a whole with all the volumes.
+            </para></note>
+        </listitem>
+    </itemizedlist>
+    <para>The following operations are not allowed if a
+        volume snapshot is in a consistency group snapshot:
+    </para>
+    <itemizedlist>
+        <listitem>
+            <para>Volume snapshot deletion.</para>
+            <note><para>A consistency group snapshot has
+                to be deleted as a whole with all the
+                volume snapshots.</para></note>
+        </listitem>
+    </itemizedlist>
+    <para>The details of consistency group operations are shown in the
+        following.</para>
+    <para>Create a consistency group:</para>
+    <screen>cinder consisgroup-create
+[--name name]
+[--description description]
+[--availability-zone availability-zone]
+volume-types</screen>
+    <note><para>The parameter <literal>volume-types</literal> is required.
+        It can be a list of names or UUIDs of volume types separated by
+        commas without spaces in between. For example, <literal>
+        volumetype1,volumetype2,volumetype3.</literal>.</para></note>
+    <screen><prompt>$</prompt> <userinput>cinder consisgroup-create --name bronzeCG2 volume_type_1</userinput></screen>
+    <para></para>
+    <screen><computeroutput>+-------------------+--------------------------------------+
+|      Property     |                Value                 |
++-------------------+--------------------------------------+
+| availability_zone |                 nova                 |
+|     created_at    |      2014-12-29T12:59:08.000000      |
+|    description    |                 None                 |
+|         id        | 1de80c27-3b2f-47a6-91a7-e867cbe36462 |
+|        name       |              bronzeCG2               |
+|       status      |               creating               |
++-------------------+--------------------------------------+</computeroutput></screen>
+    <para>Show a consistency group:</para>
+    <screen><prompt>$</prompt> <userinput>cinder consisgroup-show 1de80c27-3b2f-47a6-91a7-e867cbe36462</userinput>
+<computeroutput>+-------------------+--------------------------------------+
+|      Property     |                Value                 |
++-------------------+--------------------------------------+
+| availability_zone |                 nova                 |
+|     created_at    |      2014-12-29T12:59:08.000000      |
+|    description    |                 None                 |
+|         id        | 2a6b2bda-1f43-42ce-9de8-249fa5cbae9a |
+|        name       |              bronzeCG2               |
+|       status      |              available               |
++-------------------+--------------------------------------+</computeroutput></screen>
+    <para>List consistency groups:</para>
+    <screen><prompt>$</prompt> <userinput>cinder consisgroup-list</userinput>
+<computeroutput>+--------------------------------------+-----------+-----------+
+|                  ID                  |   Status  |    Name   |
++--------------------------------------+-----------+-----------+
+| 1de80c27-3b2f-47a6-91a7-e867cbe36462 | available | bronzeCG2 |
+| 3a2b3c42-b612-479a-91eb-1ed45b7f2ad5 |   error   |  bronzeCG |
++--------------------------------------+-----------+-----------+</computeroutput></screen>
+    <para>Create a volume and add it to a consistency group:</para>
+    <note><para>When creating a volume and adding it to a consistency
+        group, a volume type and a consistency group id must be provided.
+        This is because a consistency group can support more than one
+        volume type.</para></note>
+    <screen><prompt>$</prompt> <userinput>cinder create --volume-type volume_type_1 --name cgBronzeVol --consisgroup-id 1de80c27-3b2f-47a6-91a7-e867cbe36462 1</userinput>
+<computeroutput>+---------------------------------------+----------------------------------------+
+|                Property               |                 Value                  |
++---------------------------------------+----------------------------------------+
+|              attachments              |                   []                   |
+|           availability_zone           |                  nova                  |
+|                bootable               |                 false                  |
+|          consistencygroup_id          |  1de80c27-3b2f-47a6-91a7-e867cbe36462  |
+|               created_at              |       2014-12-29T13:16:47.000000       |
+|              description              |                  None                  |
+|               encrypted               |                 False                  |
+|                   id                  |  5e6d1386-4592-489f-a56b-9394a81145fe  |
+|                metadata               |                   {}                   |
+|                  name                 |              cgBronzeVol               |
+|         os-vol-host-attr:host         |       server-1@backend-1#pool-1        |
+|     os-vol-mig-status-attr:migstat    |                  None                  |
+|     os-vol-mig-status-attr:name_id    |                  None                  |
+|      os-vol-tenant-attr:tenant_id     |    1349b21da2a046d8aa5379f0ed447bed    |
+|   os-volume-replication:driver_data   |                  None                  |
+| os-volume-replication:extended_status |                  None                  |
+|           replication_status          |                disabled                |
+|                  size                 |                   1                    |
+|              snapshot_id              |                  None                  |
+|              source_volid             |                  None                  |
+|                 status                |                creating                |
+|                user_id                |    93bdea12d3e04c4b86f9a9f172359859    |
+|              volume_type              |             volume_type_1              |
++---------------------------------------+----------------------------------------+</computeroutput></screen>
+    <para>Create a snapshot for a consistency group:</para>
+    <screen><prompt>$</prompt> <userinput>cinder cgsnapshot-create 1de80c27-3b2f-47a6-91a7-e867cbe36462</userinput>
+<computeroutput>+---------------------+--------------------------------------+
+|       Property      |                Value                 |
++---------------------+--------------------------------------+
+| consistencygroup_id | 1de80c27-3b2f-47a6-91a7-e867cbe36462 |
+|      created_at     |      2014-12-29T13:19:44.000000      |
+|     description     |                 None                 |
+|          id         | d4aff465-f50c-40b3-b088-83feb9b349e9 |
+|         name        |                 None                 |
+|        status       |               creating               |
++---------------------+-------------------------------------+</computeroutput></screen>
+    <para>Show a snapshot of a consistency group:</para>
+    <screen><prompt>$</prompt> <userinput>cinder cgsnapshot-show d4aff465-f50c-40b3-b088-83feb9b349e9</userinput></screen>
+    <para>List consistency group snapshots:</para>
+    <screen><prompt>$</prompt> <userinput>cinder cgsnapshot-list</userinput>
+<computeroutput>+--------------------------------------+--------+----------+
+|                  ID                  | Status | Name     |
++--------------------------------------+--------+----------+
+| 6d9dfb7d-079a-471e-b75a-6e9185ba0c38 | available  | None |
+| aa129f4d-d37c-4b97-9e2d-7efffda29de0 | available  | None |
+| bb5b5d82-f380-4a32-b469-3ba2e299712c | available  | None |
+| d4aff465-f50c-40b3-b088-83feb9b349e9 | available  | None |
++--------------------------------------+--------+----------+</computeroutput></screen>
+    <para>Delete a snapshot of a consistency group:</para>
+    <screen><prompt>$</prompt> <userinput>cinder cgsnapshot-delete d4aff465-f50c-40b3-b088-83feb9b349e9</userinput></screen>
+    <para>Delete a consistency group:</para>
+    <note><para>The force flag is needed when there are volumes in the
+        consistency group.</para></note>
+    <screen><prompt>$</prompt> <userinput>cinder consisgroup-delete --force 1de80c27-3b2f-47a6-91a7-e867cbe36462</userinput></screen>
+</section>
diff --git a/doc/admin-guide-cloud/ch_blockstorage.xml b/doc/admin-guide-cloud/ch_blockstorage.xml
index 7436858b02..cba0482b7d 100644
--- a/doc/admin-guide-cloud/ch_blockstorage.xml
+++ b/doc/admin-guide-cloud/ch_blockstorage.xml
@@ -149,6 +149,7 @@
                 targets and add iSCSI initiators to the system.</para>
         </section>
         <xi:include href="blockstorage/section_volume_number_weighter.xml"/>
+        <xi:include href="blockstorage/section_consistency_groups.xml"/>
     </section>
     <section xml:id="troubleshooting-cinder-install">
         <title>Troubleshoot your installation</title>