.. running du on source and destination they have different size, ..
The question is, what "du" calculates. If I use
Code:
du -sc ...
I've got 9944692 for '/KNOPPIX/' and 10812896 for '/media/sda1/knx/source/KNOPPIX/'. But if I've use
Code:
du -sc --apparent-size ...
I've got 9850347 for '/KNOPPIX/' and 9886877 for '/media/sda1/knx/source/KNOPPIX/'.

Also with
Code:
diff -q -r /KNOPPIX/ /media/sda1/knx/source/KNOPPIX/
I couldn't find any real difference.