From 0fb8059bc401c5797ec7c1c46a8aed5ad6b63249 Mon Sep 17 00:00:00 2001
From: Tomas Jelinek <tojeline@redhat.com>
Date: Tue, 14 Feb 2017 09:19:15 +0100
Subject: [PATCH 3/3] fix 'cib-push diff-against=' when the diff is empty

---
 pcs/cluster.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pcs/cluster.py b/pcs/cluster.py
index 32ea8c3..1af1ebf 100644
--- a/pcs/cluster.py
+++ b/pcs/cluster.py
@@ -1245,8 +1245,13 @@ def cluster_push(argv):
         # dummy_retval == -1 means one of two things:
         # a) an error has occured
         # b) --original and --new differ
+        # therefore it's of no use to see if an error occurred
         if error.strip():
             utils.err("unable to diff the CIBs:\n" + error)
+        if not patch.strip():
+            utils.err(
+                "The new CIB is the same as the original CIB, nothing to push."
+            )
 
         command = ["cibadmin", "--patch", "--xml-pipe"]
         output, error, retval = runner.run(command, patch)
-- 
1.8.3.1