bug 9866:

It happens only when the template is not created by XenServer and the virtual disk size is not integer time of 2M.
    fixed in 2.2.4
    status 9866: resolved fixed

scripts/vm/hypervisor/xenserver/copy_vhd_from_secondarystorage.sh

@@ -88,6 +88,7 @@ copyvhd()
      exit 0
     fi
     if [ $type != "nfs" ]; then
+      dd if=$srcvhd of=$desvhd bs=512 seek=$(($(($vsize/512))-1)) count=1
       $VHDUTIL modify -s $vsize -n $desvhd
       if [ $? -ne 0 ]; then
         echo "32#failed to set new vhd physical size for vdi vdi $uuid"