doc: Index tags.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>

diff --git a/doc/rbd/libvirt.rst b/doc/rbd/libvirt.rst
index ca923fe93b9605ede3382114f9583d23cd9d143f..cc8dc9bd1896b6f3c2df871d63eea3cbb5027bf7 100644 (file)
--- a/doc/rbd/libvirt.rst
+++ b/doc/rbd/libvirt.rst
@@ -2,6 +2,8 @@
  Using ``libvirt`` with Ceph RBD
 =================================
 
+.. index:: Ceph Block Device; livirt
+
 The ``libvirt`` library creates a virtual machine abstraction layer between 
 hypervisor interfaces and the software applications that use them. With 
 ``libvirt``, developers and system administrators can focus on a common