The scenario you are saying might work, but it will be a lot
less maintenance hassle for you if you bite the bullet and
yum upgrade your machines to the latest version of 4.x and 5.x 
respectively, then you would only have to maintain 2 directories
rather than five.

Steve



On Tue, 10 Nov 2009, Tim Edwards wrote:

> We're setting up a local mirror for our site which will probably include
> updates. We have different machines at various different update levels
> (4.3, 4.7, 5.1, 5.2, 5.3 etc.) and I've setup the mirror for those from
> the contents of the DVD ISOs.
>
> For the updates (which I'm assuming includes errata and fastbugs)on
> ftp.scientificlinux.org it looks like, for example:
>
> ftp://ftp.scientificlinux.org/linux/scientific/40rolling/i386/errata/SL/RPMS/
> - contains all updates from the release of 4.8 to the present
>
> ftp://ftp.scientificlinux.org/linux/scientific/48/i386/errata/SL/RPMS/ -
> is currently exactly the same as the above (until 4.9 is released)
>
> ftp://ftp.scientificlinux.org/linux/scientific/43/i386/errata/SL/RPMS/ -
> contains all updates from the release of 4.3 up to the present (ie. it's
> a superset of the 40rolling and 48 errata directories)
>
> ftp://ftp.scientificlinux.org/linux/scientific/47/i386/errata/SL/RPMS/ -
> contains all updates from the release of 4.7 -> present (ie. it's a
> superset of the 40rolling and 48 errata directories but a subset of the
> 43 directory)
>
> Is this understanding correct? If yes then I plan to sync the updates
> for the earliest version we have (4.3 for the 4x series) and use that
> directory for updates for all machines (4.7, 4.8, 4.9?) - will this work?
>
> Thanks
>
> Tim
>

-- 
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
[log in to unmask]  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.