Problem with multiple arrays on Intel ICH9R
Heinz Mauelshagen
mauelshagen at redhat.com
Wed Mar 12 19:34:04 UTC 2008
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.
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Heinz Mauelshagen Red Hat GmbH
Consulting Development Engineer Am Sonnenhang 11
Storage Development 56242 Marienrachdorf
Germany
Mauelshagen at RedHat.com PHONE +49 171 7803392
FAX +49 2626 924446
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