VINUM_WRONGSUPERDEV_NAME
superdev = open(VINUM_WRONGSUPERDEV_NAME, O_RDWR); /* do we have a debug mismatch? */
if (mknod(VINUM_WRONGSUPERDEV_NAME,
fprintf(stderr, "Can't create %s: %s\n", VINUM_WRONGSUPERDEV_NAME, strerror(errno));