On 08/03/2012 08:50 PM, levin li wrote: > @@ -177,6 +177,7 @@ struct sd_node { > struct node_id nid; > uint16_t nr_vnodes; > uint32_t zone; > + uint32_t space; > }; Would better use uint64_t too, because we never know how big the future disk is. Thanks, Yuan