Merge "[Docs] Pull over Cinder service overview for install"

doc/source/install/get-started-block-storage.rst

@@ -0,0 +1,36 @@
+=====================================
+Cinder Block Storage service overview
+=====================================
+
+The OpenStack Block Storage service (Cinder) adds persistent storage
+to a virtual machine. Block Storage provides an infrastructure for managing
+volumes, and interacts with OpenStack Compute to provide volumes for
+instances. The service also enables management of volume snapshots, and
+volume types.
+
+The Block Storage service consists of the following components:
+
+cinder-api
+  Accepts API requests, and routes them to the ``cinder-volume`` for
+  action.
+
+cinder-volume
+  Interacts directly with the Block Storage service, and processes
+  such as the ``cinder-scheduler``. It also interacts with these processes
+  through a message queue. The ``cinder-volume`` service responds to read
+  and write requests sent to the Block Storage service to maintain
+  state. It can interact with a variety of storage providers through a
+  driver architecture.
+
+cinder-scheduler daemon
+  Selects the optimal storage provider node on which to create the
+  volume. A similar component to the ``nova-scheduler``.
+
+cinder-backup daemon
+  The ``cinder-backup`` service provides backing up volumes of any type to
+  a backup storage provider. Like the ``cinder-volume`` service, it can
+  interact with a variety of storage providers through a driver
+  architecture.
+
+Messaging queue
+  Routes information between the Block Storage processes.

doc/source/install/index.rst

@@ -19,6 +19,7 @@ For more information, see the
 
 .. toctree::
 
+   get-started-block-storage
    index-obs
    index-rdo
    index-ubuntu