Re: Autostart RAID 1+0 (root)

Bill Davidsen (davidsen@tmr.com)
Tue, 22 Jan 2002 15:12:07 -0500 (EST)


On Tue, 22 Jan 2002, [iso-8859-1] Jakob Østergaard wrote:

> On Tue, Jan 22, 2002 at 12:15:28PM -0500, Bill Davidsen wrote:

> I think he is referring to software RAID. And yes, it is indeed a problem
> that the RedHat installer cannot create nested RAIDs (at least, I too was
> unable to do that, so either it's impossible, or I'm equally blind).

The RH installer also won't do RAID from a text install, so if you lack
memory or the right graphic card you just can't do the install at all
(unless I miss something). What good is install from serial console if you
can't use any setup but the big blob?

>
> > This is because if the first disk fails totally, the 2nd will be used to
> > boot. You also should use an initrd image to be sure all you need to get
> > up is on that small mirrored partition. After that your other partitions
> > can be whatever pleases you.
>
> Also, GRUB/LILO only support booting from RAID-1 (or no RAID).

Another factor, for sure. Fortunately I believe only the boot partition
needs to be RAID-1, after that the kernel should take over.

-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.

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