DOn't try to query memory balloon if guest isn't active

ChangeLog

+Fri Mar 27 11:44:22 GMT 2009 Daniel P. Berrange <berrange@redhat.com>
+
+	* src/qemu_driver.c: Don't try to query balloon if guest
+	isn't running
+
 Fri Mar 27 11:44:22 GMT 2009 Daniel P. Berrange <berrange@redhat.com>
 
 	Support memory ballooning in QEMU

src/qemu_driver.c

@@ -2429,6 +2429,9 @@ static int qemudDomainGetMemoryBalloon(virConnectPtr conn,
     int ret = -1;
     char *offset;
 
+    if (!virDomainIsActive(vm))
+        return 0;
+
     if (qemudMonitorCommand(vm, "info balloon", &reply) < 0) {
         qemudReportError(conn, dom, NULL, VIR_ERR_OPERATION_FAILED,
                          "%s", _("could not query memory balloon allocation"));