On 06/25/2014 12:26 AM, S.Tindall wrote:
> On Tue, 2014-06-24 at 20:28 -0700, Yasha Karant wrote:
>
>> Is the above zstream mechanism available for SL6.5 to SL7x migration? If
>> not, is there to be a functional equivalent?
> Red Hat has not historically released z-stream sources.
>
> There is some talk in the centos project of cobbling together a
> Fedora-like pre-upgrade package, which is what I assume Red Hat is
> describing.
>
There's more than talk; there is source in the c6 branch of the two 
relevant packages at git.centos.org.

See the c6 branch of 
https://git.centos.org/summary/!!!!rpms!preupgrade-assistant.git and 
https://git.centos.org/summary/!!!!rpms!preupgrade-assistant-contents.git

Those packages are not in the SRPMS for 6Server at ftp.redhat.com, by 
the way.