The path for the serial 3270 console looks like (dev/)3270/tty1 which
causes trouble in the systemd-getty-generator as the add_symlink()
tries to make directories for each slash even for the slash after
the @ symbol in the final link name.

---
 getty-generator.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- systemd-210/src/getty-generator/getty-generator.c
+++ systemd-210/src/getty-generator/getty-generator.c	2014-03-14 14:13:09.296463091 +0000
@@ -67,6 +67,7 @@ static int add_symlink(const char *fserv
 
 static int add_serial_getty(const char *tty) {
         _cleanup_free_ char *n = NULL;
+        char *at;
 
         assert(tty);
 
@@ -76,6 +77,14 @@ static int add_serial_getty(const char *
         if (!n)
                 return log_oom();
 
+        if ((at = strchr(n, '@'))) {
+                char *sl;
+                while (*(++at) && (sl = strchr(at, '/'))) {
+                        *sl = '-';
+                        at = sl; 
+                }
+        }
+
         return add_symlink("serial-getty@.service", n);
 }