Realtime IO path tests; get local host configs working again.

common.rc

@@ -1,6 +1,6 @@
 ##/bin/sh
 #
-# Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
+# Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
 # 
 # This program is free software; you can redistribute it and/or modify it
 # under the terms of version 2 of the GNU General Public License as
@@ -592,6 +592,17 @@ _require_nobigloopfs()
 	_notrun "Large filesystem testing in progress, skipped this test"
 }
 
+# this test requires that a realtime subvolume is in use, and
+# that the kernel supports realtime as well.
+# 
+_require_realtime()
+{
+    [ "$USE_EXTERNAL" = yes ] || \
+	_notrun "External volumes not in use, skipped this test"
+    [ "$SCRATCH_RTDEV" = "" ] && \
+	_notrun "Realtime device required, skipped this test"
+}
+
 # this test requires that external log/realtime devices are not in use
 # 
 _require_nonexternal()