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List:       evms-devel
Subject:    [Evms-devel] Re: ATARAID support
From:       Arjan van de Ven <arjanv () redhat ! com>
Date:       2002-05-31 8:28:18
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On Thu, May 30, 2002 at 04:32:46PM -0500, Mark Peloquin wrote:
> Hi Arjan,
> 
> I have a couple of questions about the ATARAID support
> you've developed.
> 
> First, it appears the super block is layed down on
> each device starting at offset 4096 bytes. 

For highpoint this is correct; for Promise it's the first sector of the
last cylinder.

> For partitioned
> devices, the location of the super block would be on an
> unused area of the track containing the disk's MBR. Can
> ATARAID be used on non-partitioned devices? Is so, how is
> the super block protected from being overwritten?

ATARAID only raids entire disks, and the new device
excludes the space where the superblock is stored
> 
> Second, forgive my ignorance, but what tools are used to
> configure the ATARAID array and write the initial or
> modified super blocks onto the devices?

That would be the bios on the cards...

Greetings,
   Arjan van de Ven

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