[CentOS] Re: Why is yum not liked by some? -- CVS analogy (and why you're not getting it)

[Paul]

Why?

On Sat, 2005-09-10 at 17:41 -0400, Jim Perrin wrote:
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> 
> On 9/10/05, Les Mikesell <lesmikesell at gmail.com> wrote:
> > On Sat, 2005-09-10 at 11:23, Scot L. Harris wrote:
> > > >
> > > > 1.  It might be good if you could pass a date as a command line option
> > > > to yum ... and have yum not consider anything after that date as being
> > > > in the repo.
> > > >
> > > > That is a good suggestion for the yum mailing list:
> > > > https://lists.linux.duke.edu/mailman/listinfo/yum
> > >
> > > Which fails if the repo you are pointing to has to restore the repo
> > > files and the datetime stamp changes....
> > 
> > If you don't restore in a way that maintains the timestamp, every
> > mirror is going to have to suck a fresh copy of the whole
> > repository.  I'd expect the maintainers to already be careful
> > about that.
> > 
> > > IMHO a completely different application should be used.  This
> > > application is mostly a database that tracks a list of rpms.  If you
> > > want to build a copy of a system you select the particular snapshot (the
> > > list of rpm versions you decided was the image) and the new utility
> > > proceeds to pull those rpms from the repo and install them on the target
> > > system.  This new application would allow you to create multiple
> > > snapshots and select which one you wanted to use.
> > 
> > That would be better in the sense that it could detect errors
> > like files being removed from the repository.  If the
> > repository only has additions, the timestamp is all
> > you need to recreate the list of rpms that were present at
> > any time.  If you are going to the trouble of doing something
> > more complicated, it should involve tying repository update
> > 'sets' of rpms together so that a client could tell if
> > all needed files were present at a mirror site instead of
> > just failing dependencies when a partial update requires
> > a missing file.
> > 
> > > Trying to cram this into yum is IMHO going to make yum overly complex
> > > and more difficult to use.
> > 
> > Repeatable operations are more than just a nice idea in
> > the computer world...  And making everyone who wants a
> > repeatable yum update store a whole repository snapshot
> > for every point they need just doesn't seem like an
> > efficient way to get that.
> > 
> > --
> >   Les Mikesell
> >     lesmikesell at gmail.com
> > 
> > 
> > _______________________________________________
> > CentOS mailing list
> > CentOS at centos.org
> > http://lists.centos.org/mailman/listinfo/centos
> > 
> 
>