Yum deltarpm

[Ahmed Kamal]

Appreciating everyone's help, it seems others have attempted this before.
Anyway, let's put this through the test of time :) Also, I totally agree
with keeping drpms only if they meet certain criteria, i.e. provide >50%
savings or similar.

Right now, I am trying to figure out how/where the server side will store
the drpm metadata. Other.xml.gz seems like a good place, or maybe a new
drpm.xml.gz, but I am not sure how such file should be written. Should I
just write code that will generate drpms, and that xml metadata file too ?
Must the xml file be written according to a specific form, I only need to
attach a hash to each drpm, which the clients will use to know whether using
the drpm will be successful.

On 1/18/07, Toshio Kuratomi <a.badger at gmail.com> wrote:
>
> On Wed, 2007-01-17 at 09:34 -0600, Mike McGrath wrote:
> > On 1/17/07, seth vidal <skvidal at linux.duke.edu> wrote:
> > > On Wed, 2007-01-17 at 09:29 -0600, Mike McGrath wrote:
> > > > On 1/17/07, Warren Togami <wtogami at redhat.com> wrote:
> > > > > Then limit the delta to the most common update paths.  If the
> desired
> > > > > delta doesn't exist when the user tries, it can fall back to
> download
> > > > > the full RPM.  No big loss.
> > > >
> > > > Does anyone track how many updates are released / day?  I should
> start
> > > > tracking that, I bet its significant.
> > > >
> > >
> > > If you're willing to work with per-day granularity - you can do it
> with
> > > repoquery. Just compare the changes in 'updates-released' from one day
> > > to the next.
> > >
> > > Keep in mind the package doesn't always go up. Sometimes old pkgs get
> > > removed. So it could remain the same number but new pkgs are released.
> > >
> > > -sv
> >
> > i think a lot of this has been discussed before in Fedora.  Anyone
> > know of any threads we can point Ahmed at?  Looks like there's a lot
> > of work to be done :-D
>
> The first thread I'm aware of was in 1998 and involved xdelta'ing the
> rpm's.  Google can't locate it so I'm betting it was on contrib-list
> (whose archives have disappeared from redhat.com)
>
> Some of the more recent discussions::
>
> http://www.redhat.com/archives/fedora-devel-list/2005-December/msg00404.html
> http://www.redhat.com/archives/fedora-devel-list/2005-June/msg00018.html
>
> ... and google knows of others as well.  Try::
>   site:redhat.com delta rpm
>
> -Toshio
>
>
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>
>
>
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