[CentOS] doing a new install on top of existing software raid-1

Fri Jan 20 01:14:16 UTC 2012
Ljubomir Ljubojevic <office at plnet.rs>

On 01/19/2012 10:30 PM, fred smith wrote:
> Hi all!
>
> One of these days I'm going to upgrade my centos 5.7 box (which is
> currently configured with raid-1 on two drives) to 6.x.
>
> i've been given to believe that I should be able to do a fresh install
> on top of the existing raid setup, i.e., without having to re-create
> the raid array, but just use the existing setup.
>
> and somewhere in the last few days (in this list I think) someone posted
> that Anaconda should detect the existing raid array and allow you to re-
> use it for a new install.
>
> so just as an experiment, I booted up the 6.2 DVD (not live) and took it
> as far as where it sets up the partitioning. So, was I unduly surprised
> when it DID NOT detect the existing raid? well, a little. more in the
> category of NOT ENTIRELY PLEASED, actually.
>
> I'd appreciate it if someone who knows something about linux hardware
> raid, and its intersection with Anaconda, could drop a few clues in my
> direction.
>
> thanks in advance!
>

Are you sure LiveDVD has mdadm service installed and running? LiveCD 5.3 
was missing it, I have not looked at 6.x yet.

-- 

Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

Google is the Mother, Google is the Father, and traceroute is your
trusty Spiderman...
StarOS, Mikrotik and CentOS/RHEL/Linux consultant