Re: Intel Storage Manager Raid 5 support

On Tue, 7 Oct 2008, Peter de Groot wrote:

> When I do an dmraid -l, it says that only raid 0 and 1 are supported for
> isw, which I am
> presuming is the correct device for this fake-raid setup ??

   Follow the instructions in THIS bug:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/220493

   I used that to boot up Ubuntu LiveCD and installed Gentoo :) Anyway, the 
key part is this (for amd64, for x86, it's there too).

sudo su
echo "deb http://archive.ubuntu.com/ubuntu hardy universe" >> /etc/apt/sources.list
apt-get update; apt-get install dmraid
cd /lib/modules/2.6.24-16-generic/ubuntu/md
wget http://launchpadlibrarian.net/14522732/dm-raid45.ko-amd64
mv dm-raid45.ko-amd64 dm-raid45.ko

Edit /lib/modules/2.6.24-16-generic/modules.dep and add
/lib/modules/2.6.24-16-generic/ubuntu/md/dm-raid45.ko: /lib/modules/2.6.24-16-generic/kernel/drivers/md/dm-mod.ko

dmraid -ay

Then you can mount your raid5 volumes just fine.

Again, this is partially due to the fact that the patches here expect 
dm-raid4-5.ko, not dm-raid45.ko (even though Thomas Backlund on this list 
said that he's never had this issue - so not sure why this isn't being 
addressed).

-- 
- Antti Mäkelä - http://www.cs.tut.fi/~zarhan - [email protected] -
There is a theory which states that if ever anyone discovers exactly
what the Universe is for and why it is here,it will instantly disappear
and be replaced by something even more bizarre and inexplicable.