From 8e48b6a40f3d588f4f1b786e8f126b701e75cbd0 Mon Sep 17 00:00:00 2001
From: lissav <lissav@us.ibm.com>
Date: Tue, 20 Aug 2013 10:24:06 -0400
Subject: [PATCH]  fix defect 3750

---
 perl-xCAT/xCAT/ServiceNodeUtils.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/perl-xCAT/xCAT/ServiceNodeUtils.pm b/perl-xCAT/xCAT/ServiceNodeUtils.pm
index 242ccbf08..5bcf6508b 100644
--- a/perl-xCAT/xCAT/ServiceNodeUtils.pm
+++ b/perl-xCAT/xCAT/ServiceNodeUtils.pm
@@ -355,7 +355,7 @@ sub getSNList
     $servicenodetab->close;
     foreach my $node (@nodes)
     {
-        if ($service eq "")     # want all the service nodes
+        if  (! defined ($service) || ($service eq ""))     # want all the service nodes
         {
             push @servicenodes, $node->{node};
         }