diff --git a/thin-provisioning/create_xml_data b/thin-provisioning/create_xml_data
index 0168b40..4fb5127 100755
--- a/thin-provisioning/create_xml_data
+++ b/thin-provisioning/create_xml_data
@@ -99,7 +99,7 @@ def single_mapping(from, to = 4711)
 end
 
 def range_mapping(from, to, length)
-  "    <range_mapping time=\"0\" origin_begin=\"#{from}\" data_begin=.\"#{to}\" length=\"#{length}\"/>\n"
+  "    <range_mapping time=\"0\" origin_begin=\"#{from}\" data_begin=\"#{to}\" length=\"#{length}\"/>\n"
 end
 
 def xml_metadata(opts, units)
@@ -107,7 +107,7 @@ def xml_metadata(opts, units)
 
   puts begin_superblock(opts[:blocksize], opts[:thins] * blocks)
   0.step(opts[:thins] - 1) do |devid|
-    puts begin_device(devid, opts[:thinsize])
+    puts begin_device(devid, blocks)
     if opts[:range]
         puts range_mapping(0, to, blocks)
         to += blocks