diff --git a/README.md b/README.md
index a6ae3dec..29466fef 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,16 @@ Storage
 This charm supports a number of different storage backends depending on
 your hypervisor type and storage relations.
 
+In order to have cinder ceph rbd support for Openstack Ocata and newer
+releases, ceph-access relation must be added to cinder-ceph to allow
+nova-compute units to communicate with multiple ceph backends using
+different cephx keys and user names.
+
+    $ juju add-relation nova-compute cinder-ceph
+
+See LP Bug [#1671422](https://bugs.launchpad.net/charm-cinder-ceph/+bug/1671422)
+for more information.
+
 NFV support
 ===========