[CentOS] Software RAID muck up

[Ken Godee]

>>>Grub doesn't actually boot from a RAID - it just happens to work
>>>because RAID1 looks the same on the underlying single partitions.
>>>Boot with the CD and point the grub config to one or the other
>>>of the hd partitions holding /boot.  If you get an error, that
>>>one might be corrupt and you can try the other.   If you get
>>>to the point where the kernel is loaded and you can't mount
>>>root, then the problem could be with RAID, but that part will
>>>probably work.
> 
> 
>>I always use lilo for mirrored servers.  It will boot from either drive when 
>>one fails.
> 
> 
> Grub will do that too if you manually install it on the other
> drive.  The details of how you do that will vary depending on
> how your bios sees the other drive if the primary one fails.
> Grub doesn't have to be re-installed at every config file
> update though, so it isn't that bad to do it once.
> 

Here's a good paper on this.......

"Configuring and Managing Software RAID with
Red Hat Enterprise Linux 3"

http://www.dell.com/downloads/global/power/1q04-hul.pdf