Re: Moving from 9.1 to 9.2

From: Bernd Felsche (bernie_at_innovative.iinet.net.au)
Date: 11/15/04


Date: Mon, 15 Nov 2004 23:09:59 +0800

rsina <rsina.no-ssppaamm@earthlink.net> writes:

>Hi all, I have two questions about backing up 9.1 and doing a fresh install
>of 9.2.

>1) If we put our entire old /home directory back on 9.2, wouldn't
>it break any files in 9.2 (i.e. .yast2, .kde, .sversionrc, etc)
>that need to be specific to 9.2? If it does, is there a
>comprehensive list of the files that include all the important
>information (addressbooks, kmail preferences, bookmarks, etc) that
>should be copied from 9.1 to 9.2; and/or a list of files that
>should never be touched on 9.2?

/home should be OK. Some applications behave oddly when using old
configuration files. In such cases, close the application, rename
the old configuration (maybe the whole subdirectory) and start the
application afresh. Most applications have text-based config files
so the significant settings can all be read from the old files.
Things like address books or bookmarks can be imported by pointing
the import routine at the old information.

>2) The same question about /etc. Can we put the entire /etc from
>9.1 back on 9.2 to preserve all the network, printing, and video
>settings without any side effects? Also, any other directories
>besides /etc/ and /home that need to be backed up?

Ermmm no. 9.2 uses X.org with "compatible" links to use the "same"
configuration as XFree86 on 9.1. restoring that may make the GUI
inoperable. Backup /etc/sysconfig. It contains system settings...
but 9.2 may add some stuff to them (extra parameters) so it's not
that good an idea to simply restore over the top of some of them.
Files like /etc/sysconfig/network/routes are pretty safe for
replacement.

YaST's printer settings etc have all sorts of wierd stuff in them as
well. Make a not of your previous printer settings. 9.2 appears to
have some new drivers that would be a waste if you use the old ones
in their stead.

/etc/passwd, /etc/shadow, /etc/group adn /etc/gshadow should be safe
to restore. When upgrading servers with a number of users, I usually
write a script to create new groups and accounts based on saved
copies of the previous files; and change ownerships if user or group
ID's have changed numerically as a result of the upgrade.

I'd hazard a guess and say that most of your 9.1 configuration is
plain-vanilla and unchanged since installation. A clean install of
9.2 will be a good base for a stable system. 9.1 to 9.2 in-situ
upgrade on my AMD64 laptop fixed a lot of problems, but I have the
feeling that I'm missing out on some new features.

As a matter of routine, backup all your own data files, including
mail spool, etc. It's just an insurance policy.

-- 
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