[BlueOnyx:17001] Re: can one upgrade from 5208 to 5209

[Michael Stauber]

Hi Richard,

> can one upgrade from 5208 to 5209?

No, 5209R uses CentOS 7 and 5208R uses CentOS 6 or SL 6. A direct
upgrade of the OS is not feasible.

Hence the way to go from any older BlueOnyx to a BlueOnyx 5209R is:

 - cmuExport
 - re-image with 5209R
 - cmuImport.

In the past RedHat themselves did not support in-place upgrades between
any major versions of Red Hat Enterprise Linux. Hence the clones didn't
support it either. With the release of RHEL7 that changed a bit and
there seems to be a "supported" way now. But then again, that applies
only to RHEL7.

Lastly: A BlueOnyx 5208R consists of around 300-500 EL6 RPMs, which are
then extended with around 850 BlueOnyx RPMs to make it a 5208R. Then
figure in third party software or anything else that might have been
installed by yourself. The most likely outcome will be a system that
fails to boot or buggers out while trying to launch services that are no
longer compatible.

An upgrade procedure might tackle the upgrade of the basic OS, but it
will be unable to handle a complete transition. In the end it'll be more
hassles than it'll be worth.

So ... long story short: A transition to 5209R requires a reinstall and
import via CMU.


-- 
With best regards

Michael Stauber