vsw_get_md_physname
if (vsw_get_md_physname(vswp, mdp, node, vswp->physname) != 0) {
if (vsw_get_md_physname(vswp, mdp, node, (char *)&physname) == 0) {
static int vsw_get_md_physname(vsw_t *, md_t *, mde_cookie_t, char *);