vd_driver_type_t
#define VDS_NUM_DRIVERS (sizeof (vds_driver_types) / sizeof (vd_driver_type_t))
vd_driver_type_t vds_driver_types[] = {
vd_driver_type_t *driver_types; /* extra driver types (from vds.conf) */
kmem_free(vds->driver_types, sizeof (vd_driver_type_t) *
vds->driver_types = kmem_zalloc(sizeof (vd_driver_type_t) * num,