[CentOS-devel] Re: [CentOS] boot on raid Was: why was LILO removed from centOS 4.2?

Fri Jul 7 01:32:47 UTC 2006
Gordon Rowell <gordonr-centos at gormand.com.au>

Karanbir Singh wrote:

> > Les Mikesell wrote:
>> >> Has anyone looked at what SMEserver v7 (the Centos4 based one)
>> >> does? 

I have  :-) 

>> >> It not only installs on raid by default, it creates
>> >> a 'broken' RAID1 if you only have one drive so you can add
>> >> a mirror painlessly later.

Yep - I've done Solaris installs like that for years and it really is
nice to be able to add the mirror disk without backup/restore.

>> >> I don't have a running system
>> >> right now to see if they put /boot on raid1 or if they
>> >> use lilo or grub.
We use grub and have submitted some patches to RedHat for grub RAID install:


We've recently redone those patches inside anaconda et. al. and will
push them up to RedHat soon.

As to disk layout:

/boot is RAID1 in all configurations
/ is RAID1 for one or two disks, RAID5 for 3-5 disks and RAID6 for 6+ disks

> > Firstly, the primary aim of the CentOS distro is to stay in sync with
> > upstream. So nothing on that is going to change.

We submitted a patch for our "degraded RAID" install. Unfortunately, it
was rejected by RedHat:


I might fight that battle again another day, maybe with a "Yes, I know
what I am doing" flag.

> > Secondly, Feel free to evaluate what SMEserver are doing w.r.t
> > installer and submit patches for the ServerCD.

Feel free to take whatever you need. It's all under mezzanine in
SourceForge anonymous CVS  (smeserver project) and patches are pushed
upstream when we can.