doc/rados/operations add missing link for crush pdf

Signed-off-by: Alfredo Deza <adeza@redhat.com>

diff --git a/doc/rados/operations/crush-map-edits.rst b/doc/rados/operations/crush-map-edits.rst
index 52222703823c9772687e69ab3574275faddda16f..bbebd21f18169bab6e239131e95bda790f9c682e 100644 (file)
--- a/doc/rados/operations/crush-map-edits.rst
+++ b/doc/rados/operations/crush-map-edits.rst
@@ -652,3 +652,5 @@ Again, the special ``--enable-unsafe-tunables`` option is required.
 Further, as noted above, be careful running old versions of the
 ``ceph-osd`` daemon after reverting to legacy values as the feature
 bit is not perfectly enforced.
+
+.. _CRUSH - Controlled, Scalable, Decentralized Placement of Replicated Data: https://ceph.com/wp-content/uploads/2016/08/weil-crush-sc06.pdf