Installing onto RAID

[Rich Payne]

Either your installer has to handle this or you are going to have to do it
manually after install. Also I don't know if the SW RAID driver really
supports this....I know you can mirror a drive, I don't know if you can
mirror it two three other disks.

Also keep in mind that while read performance might be pretty good,
chances are write performance will be bad. After all you've got to write 4
copies accross two IDE channels, and you can only write to one host on
each IDE channel at a time.

--rdp


On Tue, 17 Sep 2002 pll at lanminds.com wrote:

>
> Hi all,
>
> I'm playing around with sw RAID under Linux.  I have a system which
> has 4 IDE drives which I want to install onto.  I want to mirror all
> the file systems on all 4 drives, such that if any one drive
> fails, the system should be able to boot from the next bootable
> device.
>
> However, I seem to be in a catch-22 position.  In order to mirror
> across all the drives, don't I need to install to all the drives?
> And if so, how do I configure the RAID set *before* I install?
>
> Or, is there a way to install to the primary master, yet create a
> /etc/raidtab file which then gets read and invoked at boot time and
> will mirror whatever is on /dev/hdaX to /dev/hd[b,c,d]X ?
>
> Anyone ever do this before?
>
> Thanks,
>
> --
>
> Seeya,
> Paul
> --
> 	It may look like I'm just sitting here doing nothing,
>    but I'm really actively waiting for all my problems to go away.
>
> 	 If you're not having fun, you're not doing it right!
>
>
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Rich Payne
http://talisman.mv.com
rdp at talisman dot mv dot com