On 19 October 2010 13:10, Simon Matter <simon.mat...@invoca.ch> wrote:
  and I wrote:

> > It is entirely possible that RHEL6-final uses some rpms that are older
> > than
> > the ones that were in the beta release because the beta release ones were
> > too buggy, incompatible and broken.   If you do a yum upgrade you'll
> leave
> > those buggy, incompatible and broken RPMs in place.
>
> Good point! Of course that's easily to be checked with some lines of bash
> script, simply compare the RPM versions of RHEL6-final against the
> upgraded installation and you'll see if something need downgrading.
>
>
You  would like to think so wouldn't you?

I've got someone here trying to do an anaconda upgrade from one beta to
another and it's not working (some python exception).  Now, while I think
it's a problem specific to this particular person and his fingers, I can't
be sure that the old version of anaconda hasn't done something that's
preventing the anaconda upgrade.

You could argue that you're not going to do an anaconda upgrade so there's
no problem.  And you'd be right.  Right up until the point where you try to
log a support call because something weird has happened and you don't know
what and it turns out that it was because whatever it was that broken
anaconda upgrade was something weird that broke something else ...

I also recall, some time ago and with some embarrassment, that an RPM I
wrote managed to break it's configuration in such a way that upgrading to a
fixed one wasn't possible and reverting to the older one wasn't possible
either even though it mostly worked.   Fortunately it never made it into the
wider world, but it was very annoying and embarrassing nonetheless.

jch
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