diff --git a/master/app/controllers/data_set_controller.rb b/master/app/controllers/data_set_controller.rb
index f2018ba5a..dc679f339 100644
--- a/master/app/controllers/data_set_controller.rb
+++ b/master/app/controllers/data_set_controller.rb
@@ -982,6 +982,16 @@ def register_bfabric
     Process.waitpid pid
     redirect_to :controller => "data_set", :action => "show"
   end
+  def update_resource_size
+    data_set = DataSet.find_by_id(params[:id])
+    pid = Process.fork do
+      Process.fork do
+        data_set.update_resource_size
+      end # grand-child process
+    end # child process
+    Process.waitpid pid
+    redirect_to :controller => "data_set", :action => "show"
+  end
   def announce_template_set
     @data_set_id = params[:id]
     @announce_templates = Dir["announce_templates/*.txt"].to_a.sort
diff --git a/master/app/models/data_set.rb b/master/app/models/data_set.rb
index f8e822c95..06768766b 100644
--- a/master/app/models/data_set.rb
+++ b/master/app/models/data_set.rb
@@ -149,6 +149,12 @@ def register_bfabric(op = 'new', bfabric_application_number: nil)
       end
     end
   end
+  def update_resource_size
+    #command = "update_resource_size -w #{self.workunit_id} --test"
+    command = "update_resource_size -w #{self.workunit_id}"
+    #p command
+    `#{command}`
+  end
   def paths
     dirs = []
     samples.each do |sample|
diff --git a/master/app/views/data_set/show.html.erb b/master/app/views/data_set/show.html.erb
index 42069647c..edf39aa5e 100644
--- a/master/app/views/data_set/show.html.erb
+++ b/master/app/views/data_set/show.html.erb
@@ -175,6 +175,9 @@ $(document).ready(function(){
 <% if @can_register_bfabric %>
 - <%= link_to "register in B-Fabric", {:action=>"register_bfabric", :id=>@data_set.id}, :data=>{:confirm=>"Are you sure you want to register this dataset? DataSet ID:#{@data_set.id}? It will take some seconds."}, :method=>:post %>
 <% end %>
+<% if session[:employee] and @data_set.workunit_id %>
+- <%= link_to "update resource size", {:action=>"update_resource_size", :id=>@data_set.id}, :data=>{:confirm=>"Note: It will stop if workunit size != 0 and resouce is missing in gstore."}, :method=>:post %>
+<% end %>
 <% if session[:employee] %>
 - <%= link_to "Set B-Fabric ID", '', :id=>"mod_bfab_data_set_id" %> 
   <% if !@data_set.data_set %>
diff --git a/master/config/routes.rb b/master/config/routes.rb
index e3f44c6ce..2bd507d54 100644
--- a/master/config/routes.rb
+++ b/master/config/routes.rb
@@ -29,6 +29,7 @@
       post :confirm_delete_only_data_files
       post :run_delete_only_data_files
       post :register_bfabric
+      post :update_resource_size
       get :update_completed_samples
     end
     collection do