The response from Pat technically is correct. However, we have faced
this problem and have a work around that still involves a fresh install.
To do this install, the only viable solution we have found is to use
partitions, not true logical volumes, as the fresh install will not
damage any partitions but those assigned to
/ (root)
/boot
/usr
/bin
/etc
and will not overwrite /home if specified not to do so.
We keep as separate partitions /opt , /usr1 , /usr/local , /lib-back and
within /usr1 , /usr1/etc-back , /usr1/share-back, /usr1/lib-back, and
the like (1.1 copy from the untouched old disk the contents of the above
partitions and
so that vital configuration files such as passwd and shadow are not
touched and do not need to be re-created). We keep a hardcopy of the IP
address, DNS name of the node, gateway IP address, and similar network
information for the node upon which we are installing.
thus, one has two choices:
1. install a blank harddrive, install partitions including the above
using a manual disk layout, install SLNx (N being 6 now, and soon 7).
One then uses dd from the old partition to the new blank partition (tar,
cp -PR, and other methods probably will work as well)
2. Assuming that the overwritten partitions on the existing disk are
large enough, simply allow the install to overwrite (smash) these, but
do not allow the "saved" partitions to be touched by the install. Then
one simply makes certain that entries fro the mount table in the saved
etc-back directory tree is edited into the current mount table from the
new install.
Does anyone know how to do the above with the logical volume management
(lvm) or other replacements for partitions that is the currently
recommended layout for a disk?
Yasha Karant
On 07/23/2013 11:17 AM, Pat Riehecky wrote:
It is not possible to upgrade from the 5x branch to the 6x branch. A
fresh install is required.
Pat
On 07/23/2013 01:02 PM, Jeffrey Anderson wrote:
I hope this is an appropriate place for this question.
I have a box running the CERN variant of SL 5. I want to upgrade it
to SLC6. When I boot from the install media it fails to find the old
installation and only gives me the option to do a fresh install. Is
it possible to upgrade SLC5 to SLC6?
Thanks,
Jeff
--
--------------------------------------------------------------
Jeffrey Anderson | [email protected]
<mailto:[email protected]>
Lawrence Berkeley National Laboratory |
Office: 50A-5104E | Mailstop 50A-5101
Phone: 510 486-4208 | Fax: 510 486-4204
--
Pat Riehecky
Scientific Linux developer
http://www.scientificlinux.org/
