update usage

diff --git a/vbuild-nightly.sh b/vbuild-nightly.sh
index d147747..7af4cac 100755 (executable)
--- a/vbuild-nightly.sh
+++ b/vbuild-nightly.sh
@@ -416,7 +416,9 @@ function usage () {
     echo "    the -f/-d/-p/-m/-s/-t options are uneffective in this case"
     echo " -c testconfig - defaults to $DEFAULT_TESTCONFIG"
     echo " -y {pl,pg} - passed to run_log"
-    echo " -x <run_log_args> - a hook to pass arguments to run_log"
+    echo " -e step - passed to run_log"
+    echo " -X : passes --lxc to run_log"
+    echo " -x <run_log_args> - a hook to pass other arguments to run_log"
     echo " -w webpath - defaults to $DEFAULT_WEBPATH"
     echo " -W testbuildurl - defaults to $DEFAULT_TESTBUILDURL; this is also used to get the hostname where to publish builds"
     echo " -r webroot - defaults to $DEFAULT_WEBROOT - the fs point where testbuildurl actually sits"