preventing md5 mismatch errors from compression changes
a.badger at gmail.com
Tue Nov 30 04:54:44 UTC 2010
On Tue, Nov 30, 2010 at 12:15:25AM +0000, Andre Robatino wrote:
> Andre Robatino <robatino <at> fedoraproject.org> writes:
> > 2) is easy enough. To get F14 to use the new compression unconditionally, I
> > downloaded the Rawhide version of several packages and then used yum shell with
> > the commands
> > config gpgcheck 0
> > install xz-compat-libs-5.0.0-4.fc15.x86_64.rpm
> > update xz-5.0.0-4.fc15.x86_64.rpm xz-libs-5.0.0-4.fc15.x86_64.rpm
> > deltarpm-3.6-0.4.20100708git.fc15.x86_64.rpm
> > deltaiso-3.6-0.4.20100708git.fc15.x86_64.rpm
> > python-deltarpm-3.6-0.4.20100708git.fc15.x86_64.rpm
> > run
> > and to reverse the process (necessary so yum-presto will work), yum shell again
> > with the commands
> > remove xz-compat-libs
> > downgrade xz xz-libs deltarpm deltaiso python-deltarpm
> > run
> > The old and new versions of deltarpm use the old and new compression
> > unconditionally, resp.
> I'm wondering why the new xz isn't pushed to F14 and below. With xz-compat-libs
> providing liblzma.so.0, yum-presto works normally. It's only if
> deltarpm/deltaiso are updated to the F15/Rawhide versions that it breaks. Would
> anything else break - other than the fact that command-line xz would compress
Commandline xz would compress differently and other random apps that we
don't know of would as well. This may not cause any difficulties... OTOH,
it could be that people *are* depending on the compression being the same.
breaking that assumption is something we can do at the Fedora release
boundary... not so easily within a Fedora release.
Beyond this, there's the fact that there's not a compelling reason to update
on F14 and that the present plan for the compat libs package is that it will
go away before rawhide becomes F15.
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