Re: [SLE] SuSE 9.1 Software Raid 5 install

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Date: Sat, 31 Jul 2004 17:19:06 -0400
To: suse-linux-e@suse.com

Joe Brockert wrote:

><SNIP>
>layout for raid 5 is
>drive 1, 2, 3...17 of the 18g goes to the raid mount point /
>drive 1, remaining 1g goes to /boot
>drive 2, remaining 1g goes to /swap
>
>I have tried using drives 1 and 2 on channel A and drive 3 on channel B
>and just about any conbination of drive and channels I can think of.
>
>once this setup is built I start the install. most of the time all goes
>well for about 50-60% of the install and then the machine hangs.
>
>
There does not appear to be anything "invalid" about the above setup.
The installers (not just SUSE) can get flaky with raid. I would like to
suggest a different way to get your system up and running.

Unplug your 2nd and 3rd drive and install SUSE. You can add the other
drives and create the raid system afterwords. Basically, you add the
other drives, make a raidtab file marking sda as failed, mkraid, format,
copy the system, modify grub, reboot, then hotadd sda. I know it seems
like a long way around ... but it did work for me.

Check out these two links for some better descriptions. it was a
combination of these that worked for me.

http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/014331.html
http://www.linux.com/howtos/Boot+Root+Raid+LILO-4.shtml

You would have to modify the above raid arrangement somewhat, though. In
order to install, you will need all three partitions on drive sda. In
the above setup, if drive 2 goes, you lose your swap and maybe running
apps and data. If drive 1 goes, you lose your boot and will have to use
another boot method. Try this:

sda sdb sdc
md0 - 1G md0 - 1G md2 - 1G
md1 - 16G md1 - 16G md1 - 16G
md2 - 1G md3 - 1G md3 - 1G

md0 = /boot = 1G
md1 = / = 32G
md2 = swap = 1G
md3 = swap = 1G

You should be able to continue regardless of which drive fails and sda
has all the partitions needed for the install.

HTH
Louis

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• Previous message: Dylan: "Re: [SLE] Receive ROOT mail on Kmail (as regular user)"
• In reply to: Joe Brockert: "[SLE] SuSE 9.1 Software Raid 5 install"
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