CentOS - Jun 2012 - Centos 6 / Kickstart Using degraded mdadm RAID1

I'm trying to install a bunch of C6 involving initially degraded mdadm RAID
1

Anaconda refuses to let me create a RAID 1 array with only one member.

Based on some reading, it seems that I should be able to use kickstart
with the PRE scripts to do this. However, after trying for a couple of
hours, it doesn't seem that anaconda will allow it, it just boots the
created arrays. At best I end up with a list of softraid partitions
instead.

Am I trying the impossible or has anybody done this before and can
point to a resource how on this can be done?

On Sun, Jun 10, 2012 at 09:34:16PM +0800, Emmanuel Noobadmin
wrote:
> Based on some reading, it seems that I should be able to use kickstart
> with the PRE scripts to do this. However, after trying for a couple of
> hours, it doesn't seem that anaconda will allow it, it just boots the
> created arrays. At best I end up with a list of softraid partitions
> instead.
> Am I trying the impossible or has anybody done this before and can
> point to a resource how on this can be done?
Can you do what you want via the GUI installer?  Potentially by dropping
into a shell to do parts of it (eg build the raid array degreaded,
then use the GUI to install onto that).  If so, manually do an install
and then look at /root/anaconda-ks.cfg to see what file that built out.
It might provide the hints you need.

-- 

rgds
Stephen