Index: oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/blob/MissingBlobStoreFactory.java
===================================================================
--- oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/blob/MissingBlobStoreFactory.java	(revision 0)
+++ oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/blob/MissingBlobStoreFactory.java	(revision 0)
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jackrabbit.oak.upgrade.cli.blob;
+
+import org.apache.jackrabbit.oak.segment.file.tooling.BasicReadOnlyBlobStore;
+import org.apache.jackrabbit.oak.spi.blob.BlobStore;
+
+import com.google.common.io.Closer;
+
+public class MissingBlobStoreFactory implements BlobStoreFactory {
+
+    @Override
+    public BlobStore create(Closer closer) {
+        return new BasicReadOnlyBlobStore();
+    }
+
+    @Override
+    public String toString() {
+        return "MissingBlobStore";
+    }
+}
Index: oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/OptionParserFactory.java
===================================================================
--- oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/OptionParserFactory.java	(revision 1747399)
+++ oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/OptionParserFactory.java	(working copy)
@@ -50,6 +50,8 @@
 
     public static final String SRC_S3_CONFIG = "src-s3config";
 
+    public static final String SRC_MBS = "src-missingblobstore";
+
     public static final String DST_FDS = "datastore";
 
     public static final String DST_FBS = "fileblobstore";
@@ -101,6 +103,7 @@
         op.accepts(DST_S3, "Datastore directory to be used for the target S3").withRequiredArg().ofType(String.class);
         op.accepts(DST_S3_CONFIG, "Configuration file for the target S3DataStore").withRequiredArg()
                 .ofType(String.class);
+        op.accepts(SRC_MBS, "Use a dummy BinaryStore");
     }
 
     private static void addRdbOptions(OptionParser op) {
Index: oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/StoreArguments.java
===================================================================
--- oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/StoreArguments.java	(revision 1747399)
+++ oak-upgrade/src/main/java/org/apache/jackrabbit/oak/upgrade/cli/parser/StoreArguments.java	(working copy)
@@ -27,6 +27,7 @@
 import org.apache.jackrabbit.oak.upgrade.cli.blob.DummyBlobStoreFactory;
 import org.apache.jackrabbit.oak.upgrade.cli.blob.FileBlobStoreFactory;
 import org.apache.jackrabbit.oak.upgrade.cli.blob.FileDataStoreFactory;
+import org.apache.jackrabbit.oak.upgrade.cli.blob.MissingBlobStoreFactory;
 import org.apache.jackrabbit.oak.upgrade.cli.blob.S3DataStoreFactory;
 import org.apache.jackrabbit.oak.upgrade.cli.node.StoreFactory;
 import org.slf4j.Logger;
@@ -34,6 +35,7 @@
 
 import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.SRC_FBS;
 import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.SRC_FDS;
+import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.SRC_MBS;
 import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.SRC_S3;
 import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.SRC_S3_CONFIG;
 import static org.apache.jackrabbit.oak.upgrade.cli.parser.OptionParserFactory.DST_FBS;
@@ -96,6 +98,8 @@
             factory = new S3DataStoreFactory(parser.getOption(SRC_S3_CONFIG), parser.getOption(SRC_S3));
         } else if (parser.hasOption(SRC_FDS)) {
             factory = new FileDataStoreFactory(parser.getOption(SRC_FDS));
+        } else if (parser.hasOption(SRC_MBS)) {
+            factory = new MissingBlobStoreFactory();
         } else {
             factory = new DummyBlobStoreFactory();
         }