GRAB_STR
GRAB_STR("id", v, tok, pv->pv_uuid, sizeof(pv->pv_uuid));
GRAB_STR("id", v, tok, lv->lv_uuid, sizeof(lv->lv_uuid));
GRAB_STR("id", v, tok, uuid,
GRAB_STR("id", v, tok, vg->vg_uuid, sizeof(vg->vg_uuid));