X-Git-Url: http://www.dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2Fcluster.pl;h=5c3f0fb90a19c83fd59a4ffe5da2838fd90a9697;hb=84fb1f6e7089c24454eeb92bf093e31682db4489;hp=a33e6da5f1a8e76b2907cf8547791702a146cdd9;hpb=3c2ea668af700128a081cc7c17ca93cc685fad37;p=spider.git

diff --git a/perl/cluster.pl b/perl/cluster.pl
index a33e6da5..5c3f0fb9 100755
--- a/perl/cluster.pl
+++ b/perl/cluster.pl
@@ -34,11 +34,14 @@ BEGIN {
 	# try to create and lock a lockfile (this isn't atomic but
 	# should do for now
 	$lockfn = "$root/local/cluster.lck";       # lock file name
-	if (-e $lockfn) {
+	if (-w $lockfn) {
 		open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
 		my $pid = <CLLOCK>;
-		chomp $pid;
-		die "Lockfile ($lockfn) and process $pid exist, another cluster running?" if kill 0, $pid;
+		if ($pid) {
+			chomp $pid;
+			die "Lockfile ($lockfn) and process $pid exist, another cluster running?" if kill 0, $pid;
+		}
+		unlink $lockfn;
 		close CLLOCK;
 	}
 	open(CLLOCK, ">$lockfn") or die "Can't open Lockfile ($lockfn) $!";