.

wcfs/wcfs.go

@@ -1249,7 +1249,11 @@ func main() {
 	defer zstor.Close()
 
 	zdb := zodb.NewDB(zstor)
-	zhead, err := zopen(ctx, zdb, &zodb.ConnOptions{})
+	zhead, err := zopen(ctx, zdb, &zodb.ConnOptions{
+		// we need zhead.cache to be maintained across several transactions.
+		// see "3) for head/bigfile/* the following invariant is maintained ..."
+		NoPool: true,
+	})
 	if err != nil {
 		log.Fatal(err)
 	}