Re: Problem with multiple arrays on Intel ICH9R

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On Wed, Mar 12, 2008 at 12:01:53AM +0000, Daniel Guzman wrote:
> Hello,
> My system: ASUS P5K-E, Chipset P35 and ICH9R, 4x Western Digital 320GB.
> Kernel 2.6.24. dmraid 1.0.0.rc14
> 
> Intel(R) Matrix Storage Technology allows you to create two RAID volumes
> sharing the same hard disks (
> http://www.intel.com/design/chipsets/matrixstorage_sb.htm).
> I am trying to install Kubuntu in my system, I can copy the files in the
> disks but there is a problem when grub tryes to write the mbr. Grub is
> unable to read the partition table if there is two RAID volumes on the ICH9R
> controller.
> 
> When I created a RAID0 array filling the whole capacity of the disks, grub
> can read partition table and setup the mbr.
> 
> If I create a RAID0 array filling only a portion of the total capacity, or
> if I create a RAID0 and a RAID5 array on the same disks, grub can not setup
> the mbr due to "Unknown partition table signature".
> 
> Is this issue related to dmraid?
> Are multiple arrays per controller supported in dmraid?

Yes, multiple arrays with isw are supported.
Sounds like a grub problem with such mappings.

Cheers,
Heinz

> 
> Regards.

> _______________________________________________
> Ataraid-list mailing list
> Ataraid-list@xxxxxxxxxx
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Heinz Mauelshagen                                 Red Hat GmbH
Consulting Development Engineer                   Am Sonnenhang 11
Storage Development                               56242 Marienrachdorf
                                                  Germany
Mauelshagen@xxxxxxxxxx                            PHONE +49  171 7803392
                                                  FAX   +49 2626 924446
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