Request for Comments: updating RPMs using binary deltas.

[Riku Meskanen]

On Thu, 8 Jan 2004, Lamar Owen wrote:
> But the original RPM is typically in a separate tree already on the mirror,
> outside the updates tree.  SRPMS could be delta'd too, if you'd like.   If
> the mirror was only a mirror of the updates tree, then, yes, if you want to
> mirror the distribution's pristine RPMs you would need more space.  But why
> couldn't you mirror just the update deltas?
>
> Good points, though.  That's why I wanted comments, because I know I can't
> think of everything.  But something needs to be done about the size of
> updates when the patch that generated the update is just a few dozens of
> bytes, but generates a 50MB download.  Something is critically wrong with
> that picture.

There is BTW a nice delta tool used distributing
Debian CD's, see http://www.debian.org/CD/jigdo-cd/

Works pretty well actually :) I tried it once after
Red Hat announced EOL for RHL's and I did not yet
know about Fedora.

HTH,

:-) riku

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