raid'ing problems

raid'ing problems

[Peter Lauda]

If anyone is listening....

I have read the howto's and all the FAQ's I can find. I am trying to do
the following and having zero success:

An installed system needs to have a second disk setup with the first as
a raid 1 set. 

I have been able to boot from a CD and create the md0 md1 and md2
devices. I cannot however, get any of these to mount afterwards. I
assume that mount doesn't know what type of fs these are and I'm not
seeing anything in the docs about what type I can use. 

Eventually this raid set needs to be able to boot. We use grub as the
boot loader. If anyone has done this or knows how and can offer any
assistance I thank you in advance.

We are using 2.4.29 kernel in a home rolled package but have both
raidtools and mdadm tools available.

Cheers!
--p

Re: raid'ing problems

[Andy Dawson]

Hi Peter,

I'd follow the instructions here: 
http://www.linuxhowtos.org/System/raid.htm

Note that I've not actually tried it myself, but from a quick glance 
through appears to be reasonable.

Of course you do have a backup before you start just in case, don't you?

Following the instructions at the end of the page worked for me when I was 
setting up Grub to boot from a software RAID1 array.

Regards
Andy


On Fri, 21 Oct 2005, Peter Lauda wrote:

> If anyone is listening....
>
> I have read the howto's and all the FAQ's I can find. I am trying to do
> the following and having zero success:
>
> An installed system needs to have a second disk setup with the first as
> a raid 1 set.
>
> I have been able to boot from a CD and create the md0 md1 and md2
> devices. I cannot however, get any of these to mount afterwards. I
> assume that mount doesn't know what type of fs these are and I'm not
> seeing anything in the docs about what type I can use.
>
> Eventually this raid set needs to be able to boot. We use grub as the
> boot loader. If anyone has done this or knows how and can offer any
> assistance I thank you in advance.
>
> We are using 2.4.29 kernel in a home rolled package but have both
> raidtools and mdadm tools available.
>
> Cheers!
> --p
>
>
>
> -
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>

Dr. Andy Dawson
A.J.Dawson@Bradford.ac.uk
http://www.mossie.org
http://www.museum-explorer.org.uk

  Never attribute to malice that which can adequately be explained by stupidity

Re: raid'ing problems

[Brad Dameron]

On Fri, 2005-10-21 at 08:50 -0400, Peter Lauda wrote:
> If anyone is listening....
> 
> I have read the howto's and all the FAQ's I can find. I am trying to do
> the following and having zero success:
> 
> An installed system needs to have a second disk setup with the first as
> a raid 1 set. 
> 
> I have been able to boot from a CD and create the md0 md1 and md2
> devices. I cannot however, get any of these to mount afterwards. I
> assume that mount doesn't know what type of fs these are and I'm not
> seeing anything in the docs about what type I can use. 
> 
> Eventually this raid set needs to be able to boot. We use grub as the
> boot loader. If anyone has done this or knows how and can offer any
> assistance I thank you in advance.
> 
> We are using 2.4.29 kernel in a home rolled package but have both
> raidtools and mdadm tools available.
> 
> Cheers!
> --p

Did you format the partitions after you created them?

mkfs.ext3 /dev/md0

And read this link for your other question.

http://www.linuxsa.org.au/mailing-list/2003-07/1270.html

Googled in 0.36 seconds.

Brad Dameron
SeaTab Software
www.seatab.com