Smart Update disk image?

[Gardenian]

Originally Posted by dnanian

Then the bands of the bundle that have changed would be copied. In the case of a sparse image, the whole thing (if changed).

In the case, then, where one wants to keep synced two external drives which contain sparse images, the most efficient procedure without a custom script would seem to be, first, to mount the sparse images on both drives, then perform a copy between them; finally, perform a copy between the drives, which will skip the sparse images and copy the other modified files on the source drive. But there is probably something wrong with this procedure, yes?