doc: remove MDS from diagram describing RBD and OpenStack

The MDS is not used with RBD or librados.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

diff --git a/doc/rbd/rbd-openstack.rst b/doc/rbd/rbd-openstack.rst
index fe5dd41e6c3ab9baab73dcf3056dd54b2e6adf04..46c59428eab04f5511a02f720357af500f267dd5 100644 (file)
--- a/doc/rbd/rbd-openstack.rst
+++ b/doc/rbd/rbd-openstack.rst
@@ -23,9 +23,9 @@ processor. The following diagram depicts the OpenStack/Ceph technology stack.
             |                      librbd                       |
             +---------------------------------------------------+
             |     librados (C, C++, Java, Python, PHP, etc.)    |
-            +---------------+-+---------------+-+---------------+
-            |      OSDs     | |      MDSs     | |    Monitors   |
-            +---------------+ +---------------+ +---------------+
+            +------------------------+-+------------------------+
+            |          OSDs          | |        Monitors        |
+            +------------------------+ +------------------------+
 
 .. _Installing OpenStack: ../../install/openstack