>now, if the filesystem didn't change since the last incremental the size
>of the next higher level would be 0 ...
That's not true. We have no idea what the format of backup images look
like. They may include header data that is *always* present, whether
anything is backed up or not. And thus the size is always non-zero.
As it happens, this is the case for GNU tar (and I suspect for dump as
well). Apparently it always does "./" so the image is never empty.
>Christoph
John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
