new: tap server tab disk io view to switch

lib/data/model/app/net_view.dart

@@ -35,22 +35,22 @@ enum NetViewType {
     }
   }
 
-  NetViewData build(ServerStatus ss) {
+  (String, String) build(ServerStatus ss) {
     switch (this) {
       case NetViewType.conn:
-        return NetViewData(
-          'Conn:\n${ss.tcp.maxConn}',
-          'Fail:\n${ss.tcp.fail}',
+        return (
+          '${l10n.conn}:\n${ss.tcp.maxConn}',
+          '${l10n.failed}:\n${ss.tcp.fail}',
         );
       case NetViewType.speed:
-        return NetViewData(
-          'In:\n${ss.netSpeed.speedIn(all: true)}',
-          'Out:\n${ss.netSpeed.speedOut(all: true)}',
+        return (
+          '↓:\n${ss.netSpeed.speedIn(all: true)}',
+          '↑:\n${ss.netSpeed.speedOut(all: true)}',
         );
       case NetViewType.traffic:
-        return NetViewData(
-          'In:\n${ss.netSpeed.sizeIn(all: true)}',
-          'Out:\n${ss.netSpeed.sizeOut(all: true)}',
+        return (
+          '↓:\n${ss.netSpeed.sizeIn(all: true)}',
+          '↑:\n${ss.netSpeed.sizeOut(all: true)}',
         );
     }
   }
@@ -77,10 +77,3 @@ enum NetViewType {
     }
   }
 }
-
-class NetViewData {
-  final String up;
-  final String down;
-
-  NetViewData(this.up, this.down);
-}

lib/data/model/server/disk.dart

@@ -84,8 +84,10 @@ class DiskIO extends TimeSeq<DiskIOPiece> {
       final vals = item.split(Miscs.blankReg);
       if (vals.length < 10) continue;
       try {
+        final dev = vals[2];
+        if (dev.startsWith('loop')) continue;
         items.add(DiskIOPiece(
-          dev: vals[2],
+          dev: dev,
           sectorsRead: int.parse(vals[5]),
           sectorsWrite: int.parse(vals[9]),
           time: time,