RE: Help needed plz

http://en.tldp.org/HOWTO/Software-RAID-HOWTO.html

-----Original Message-----
From: Philippe Dhont (Sea-ro) [mailto:Philippe.Dhont@searo.be] 
Sent: Thursday, February 06, 2003 11:16 AM
To: 'linux-raid@vger.kernel.org'
Subject: Help needed plz


Hi all,

I am new to softraid so i first readed some info about it and 
i also have the book "managing raid on linux." I don't want 
to use a pre-installed raid (like in suse or redhat etc...) 
but i want to do it from my slackware8.1 installation, from 
scratch! But there are some things not clear. This is the 
situation: I have a ATA-hda and a ATA-hdc (only 2 disks) My 
linux is installed on HDA and everything works fine, i 
recompiled the kernel and raid-drivers a succesfully started, 
the raidtools are also fine. But now some questions, maybe 
stupid but it's a different with hardware raid and i really 
want to know it.

1) i can't do a mkraid /dev/md0   ==> i get the message that hda1 (my
current installation is on hda1 and everything else, i also 
boot from it) is already mounted so i guess this is normal 
but if i change "hda1 to hda" and "hdb1 to hdb" in the 
raidtab then everything works and it synchronizes (can see it 
in /proc/mdstat). But this synchronizes only once, i want to 
boot from md0 and this is of course not possible in this 
situation, it always boots from hda1. How do i have to boot 
from md0 ?? Do i have to make a raid1 with 3 disks ?? Or how 
do i have to do it ? I don't understand this part !! 1 
installation disk and two disks for the raid1 and then 
install a system on the raid1 ?? And later on remove the 
install disk i first installed the raid arrey with ?

2)How do i have to install a linux on a md0 ? Do i start with 
the cd or something ? Never did it before.


Thnx for the help, just put me on the way!!
I tried before but i crashed my hdd's already twice !!
But you have to start somewhere, right ?

thnx
Philippe Dhont 
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