On 05/09/2015 05:00 PM, Leon Fauster wrote:
modern filesystems and image formats do not allocate the whole space if not neccessary (qcow2 feature).
Not specifically. Every disk image type would be sparse if it were copied off a disk and back by a tool that wrote them correctly.
qcow2 does support small files on filesystems that don't support sparse files, but in that case du and ls will show the same size.