Re: dmraid segfault with DDF

[Heinz Mauelshagen <mauelshagen@xxxxxxxxxx>]

On Tue, Aug 21, 2007 at 02:20:37PM -0700, Hall, Eric R wrote:
> >No idea, dmraid detects ddf1 metadata. Is there an option to choose the
> >format?
> Not in dmraid; it just reads the metadata on the disks.

Unless you specify "-f ..." on the command line, hence prohibiting
discovery of other metadata formats than the one(s) specified.

> Something else
> put the DDF metadata on the disks.  Is there an Adaptec add-in card in
> this system?  The OROM puts the metadata on the disks and should be able
> to reconfigure.
> 
> I have no idea if you can migrate/switch metadata formats with out data
> loss.  I don't think it can be done but someone much wiser than I should
> speak up if I am wrong.

No, you can't.

Heinz

> 
> If you can risk loosing the array set, you could enable the S5000VSA's
> onboard RAID support (assuming that there is not an add-in card being
> used).
> Buried in the BIOS of the S5000VSA is an option to enable RAID.  Select
> Advanced -> ATA Controller Configuration -> set On board SATA Controller
> as Enabled -> set SATA Mode as Enhanced -> set Configure SATA as RAID as
> Enabled.
> This just enables the 'Intel RAID option ROM' which can then be used to
> create an ISW RAID set.  Then you can use the ISW segfault patch...
> 
> >Yes, I noticed this.
> >Thanks for the info.
> Sorry I couldn't be any more help.  Hopefully someone who knows more
> will add to the thread.
> 
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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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