On Wed, 25 Jun 2014, Akemi Yagi wrote:

On Tue, Jun 24, 2014 at 10:29 PM, Yasha Karant <[email protected]> wrote:

I was not referring to the Fedora mechanism.  Some licensed-for-fee
commercial unix environments (not linux) used on primary servers allow for
major release upgrade in place.
Does the Red Hat method that is mentioned by Red Hat allow for this, or is
the Red Hat enterprise z-stream "insane" to use in a production situation?

If it is not insane but actually is effective, are there no Linux or GPL
encumbrances on z-stream that "force" Red Hat to release the source?

Please see this documentation:

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/chap-Red_Hat_Enterprise_Linux-Migration_Planning_Guide-Upgrade_Tools.html

But it is supported only in some use cases. The details are summarized here:

https://access.redhat.com/site/solutions/799813
(this one needs subscription to read)

As I understood it from a Red Hat spokesperson this functionality was absolutely required for their RHEV product so that hypervisors could be updated from the RHEL6-based product to the RHEL7-based product.

Quite likely this will be used for other more appliance-like (read: self-contained) setups/offerings in the future as well.

--
-- dag wieers, [email protected], http://dag.wieers.com/
-- dagit linux solutions, [email protected], http://dagit.net/

[Any errors in spelling, tact or fact are transmission errors]

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