[CentOS-docs] Updated How to Setup a Software RAID on CentOS 5

[R P Herrold]

On Wed, 29 Apr 2009, Ned Slider wrote:

>>   There's always going to be an argument about whether to put /boot and swap
>> on RAID.  It's all about performance most of the time being slightly better
>> versus stability in the event of device failure.
>
> I can't think of a good argument for not having /boot on the raid1.

Then you do not support it, and see the recurring support load 
in #centos -- we get this load all the time.  It is from 
clueless newbies, barely able to communicate, with unknown 
controllers.  Putting /boot on raid adds complexity, it 
breaks, and it is needless in most cases.

I'd rather have a discussion of setting up TWO /boot ext2 
(ext3 unneeded), on differing spindles, and a discussion of 
rsyncing the second when the first is updated; and a grub.conf 
description to match --

Why I'd even argue for a mount of /boot RO, and require that a 
remount occur before a kernel update happened [but that's just 
me] -- one more barrier to keep cracker out of root only 
domains

The 'second non-raid' bootable image was the standard back in 
the early Solaris days -- two '/' that one so updated, and the 
ability to use OpenFirmware to toggle in the alternate boot 
device.

-- Russ herrold