From 4e6dab94d0931eafba502f5a91da29a54e75bb33 Mon Sep 17 00:00:00 2001 From: Daniel Black Date: Wed, 21 Feb 2018 19:38:57 +0530 Subject: [PATCH] MDEV-10.1.31 does not join an existing cluster with SST xtrabackup-v2 Analysis:- The problem is the change in the implementation of wait_for_listen in wsrep_sst_xtrabackup-v2.sh. The new script uses lsof which will always exit with an error code if it can't find all the items, and because the script has the -e option set in the hashbang line (#!/bin/bash -ue), the script will abort right after running lsof if lsof can't find even a single item among all the items listed in its arguments. This will happen even if socat is running and listening, because it can't find nc. The loop in wait_for_listen will therefore always quit after one iteration without writing the "ready" line to signal the parent. Solution:- We will or the lsof with true. Patch Credit :Daniel Black and David Wang --- scripts/wsrep_sst_xtrabackup-v2.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/wsrep_sst_xtrabackup-v2.sh b/scripts/wsrep_sst_xtrabackup-v2.sh index 64dd182e2f2f..9104daf19bc3 100644 --- a/scripts/wsrep_sst_xtrabackup-v2.sh +++ b/scripts/wsrep_sst_xtrabackup-v2.sh @@ -644,7 +644,7 @@ wait_for_listen() for i in {1..300} do - LSOF_OUT=$(lsof -sTCP:LISTEN -i TCP:${PORT} -a -c nc -c socat -F c) + LSOF_OUT=$(lsof -sTCP:LISTEN -i TCP:${PORT} -a -c nc -c socat -F c 2> /dev/null || :) [ -n "${LSOF_OUT}" ] && break sleep 0.2 done