Enforce image update from image_to_live.

src/scripts/image_to_live.sh

 #!/bin/bash
 
 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to update an image onto a live running ChromiumOS instance.
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
@@ skipping 81 matching lines @@
         echo 'CHROMEOS_DEVSERVER=${devserver_url}' >> /etc/lsb-release"
   fi
 }
 
 function run_auto_update {
   echo "Starting update"
   local update_file=/var/log/softwareupdate.log
   # Clear it out so we don't see a prior run and make sure it
   # exists so the first tail below can't fail if it races the
   # memento updater first write and wins.
-  remote_sh "rm -f ${update_file}; touch ${update_file}; \
-      /opt/google/memento_updater/memento_updater.sh</dev/null>&/dev/null&"
+  remote_sh "rm -f /tmp/memento_autoupdate_completed; rm -f ${update_file}; \
+      touch ${update_file}; \
+      /opt/google/memento_updater/memento_updater.sh --force_update < /dev/null\
+      >&/dev/null&"
 
   local update_error
   local output_file
   local progress
 
   update_error=1
   output_file="${TMP}/output"
 
   while true; do
     # The softwareupdate.log gets pretty bit with download progress
@@ skipping 97 matching lines @@
   fi
 
   remote_sh "grep ^CHROMEOS_RELEASE_DESCRIPTION= /etc/lsb-release"
   local release_description=$(echo $REMOTE_OUT | cut -d '=' -f 2)
   echo "Update was successful and rebooted to $release_description"
 
   return 0
 }
 
 main $@