g_mirror_destroy
error = g_mirror_destroy(sc, G_MIRROR_DESTROY_SOFT);
g_mirror_destroy(sc, G_MIRROR_DESTROY_HARD);
g_mirror_destroy(sc, G_MIRROR_DESTROY_HARD);
error = g_mirror_destroy(gp->softc, G_MIRROR_DESTROY_SOFT);
error = g_mirror_destroy(sc, G_MIRROR_DESTROY_DELAYED);
int g_mirror_destroy(struct g_mirror_softc *sc, int how);
error = g_mirror_destroy(sc, how);
g_mirror_destroy(gp->softc, G_MIRROR_DESTROY_HARD);