On Wed, 20 Oct 2010 19:41:15 -0430, Patrick wrote:

> On Wed, 2010-10-20 at 23:02 +0200, Walter Cazzola wrote:
> > today I got a machine fail (a blackout) during a yum update and after

Have you tried running "yum-complete-transaction" yet?

> > that all my attempt to update my machine end with the following error:
> [...]
> 
> What you're seeing is a yum error (actually a repo out of synch in all
> likelihood), not a yum crash. Announcing that yum crashes is a serious
> issue. A repo inconsistency is liable to go away on its own.

Where does this "repo out of synch" theory come from?
When an x86_64 multiarch repo is updated, its metadata contains matching
(!) pairs of x86_64 and i686 packages [1]. That is, same version and
release, because the packages are built from the same src.rpm, and the
multiarch repo compose tool fetches the packages from the same build. A
repo that is "out of sync" either doesn't offer the latest metadata at all
or doesn't carry all packages yet - 404 Not Found errors. But Yum would
not proceed with installing updates if packages referred to in the
metadata are not found. The only case when a multiarch package like
postgresql-libs would differ in version-release between x86_64 and i686
would be if the repo compose tool contained a bug (or the packages were
changed in a way they would not be selected for multiarch anymore).

-- 
[1] https://admin.fedoraproject.org/updates/postgresql-8.4.5-1.fc13
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