From 4db0efab470d5d197c90fdee9ec47bb28a457e8e Mon Sep 17 00:00:00 2001
From: Ian Barwick <ian@2ndquadrant.com>
Date: Mon, 30 Nov 2015 15:40:43 +0900
Subject: [PATCH] pg_replslot will only exist in 9.4 and later

We need to clean this up regardless of whether "use_replication_slots"
is set.
---
 repmgr.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/repmgr.c b/repmgr.c
index c3b499e7..0925cd5c 100644
--- a/repmgr.c
+++ b/repmgr.c
@@ -1833,14 +1833,17 @@ stop_backup:
 		 * functionality of replication slots
 		 */
 
-		maxlen_snprintf(script, "rm -rf %s/pg_replslot/*",
-						local_data_directory);
-		r = system(script);
-		if (r != 0)
+		if (server_version_num >= 90400)
 		{
-			log_err(_("unable to empty replication slot directory %s/pg_replslot/\n"),
-					local_data_directory);
-			exit(ERR_BAD_RSYNC);
+			maxlen_snprintf(script, "rm -rf %s/pg_replslot/*",
+							local_data_directory);
+			r = system(script);
+			if (r != 0)
+			{
+				log_err(_("unable to empty replication slot directory %s/pg_replslot/\n"),
+						local_data_directory);
+				exit(ERR_BAD_RSYNC);
+			}
 		}
 	}