raid_obj_get_sibling
id = raid_obj_get_sibling(raid_tab, id);
id = raid_obj_get_sibling(raid_tab, id);
static raid_obj_id_t raid_obj_get_sibling(raid_obj_tab_t *, raid_obj_id_t);
while ((tmp1 = raid_obj_get_sibling(raid_tab, tmp)) != OBJ_NONE)