X M,C,S works - cluster could start and client connected and could get pt and...

X M,C,S works - cluster could start and client connected and could get pt and nodetab from M; attach to S and read all objects from there; yay!

go/neo/client/client.go

@@ -347,7 +347,17 @@ func (c *Client) LastOid(ctx context.Context) (zodb.Oid, error) {
 }
 
 func (c *Client) Load(ctx context.Context, xid zodb.Xid) (data []byte, serial zodb.Tid, err error) {
-	defer xerr.Contextf(&err, "client: load %v", xid)	// XXX keep zodb errors intact?
+	defer func() {
+		switch err.(type) {
+		// keep zodb errors intact
+		// XXX ok? or requre users always call Cause?
+		case *zodb.ErrOidMissing:
+		case *zodb.ErrXidMissing:
+
+		default:
+			xerr.Contextf(&err, "client: load %v", xid)
+		}
+	}()
 
 	err = c.withOperational(ctx)
 	if err != nil {

go/neo/server/cluster_test.go

@@ -507,9 +507,7 @@ func TestMasterStorage(t *testing.T) {
 					xid.Tid++
 				}
 
-				println("555")
 				data, tid, err := C.Load(bg, xid)
-				println("777")
 				if datai.Data != nil {
 					if !(bytes.Equal(data, datai.Data) && tid == datai.Tid && err == nil) {
 						t.Fatalf("load: %v:\nhave: %v %v %q\nwant: %v nil %q",