[RE]Promise FastTrak66 - dmraid doesn't recognize striped array on pair of Maxto

[Heinz Mauelshagen]

Woody, James,

both offsets added.

If this offset story turns out to be ongoing, I need to address
this by a flexible algorithm for pdc metadata discovery...

Heinz

On Mon, Apr 16, 2007 at 10:13:50AM -0400, Woody Suwalski wrote:
> Bob Stewart wrote:
> >--- James Olson <big_spender12 at lycos.com> wrote:
> > Hi Bob,
> >I ran into a similar problem with the same controller on certain older 
> >drives. The problem has to do with the way the fasttrak bios sees the 
> >drive size and
> >geometry as opposed to the way linux sees it as reported by the old drive's
> >firmware.  Normally the drive metadata sector is located on the last 
> >cylinder
> >of the drive, about 63 sectors before the end.  Anyway you can probably 
> >get it
> >to work if you look through the data on your drive to find out what sector 
> >the
> >metadata is on, and then modify the dmraid source (pdc.c?) to add it to the
> >list of sector offsets from the end of the disk to try.
> >   -James
> >
> >Dmraiders,
> >
> >This was actually pretty easy to do.  May I suggest the following change to
> >pdc.h?  Seems like there should be some rhyme or reason for the offset, 
> >though.
> > Or is it just dependent on the model and revision of the controller?  
> > This is
> >a "hacked" Utra66 controller with BIOS V1.30.
> >
> >OLD:
> >#define PDC_CONFIGOFFSETS       63,255,256,16,399,735
> >NEW:
> >#define PDC_CONFIGOFFSETS       63,255,256,16,399,735,675
> >
> >Bob
> >
> >  
> Actually we have found yet another PDC location=991:
> 
> #define PDC_CONFIGOFFSETS       63,255,256,16,399,735,675,991
> 
> I think I have sent Heinz a patch for this, however it somehow got lost?
> Anyway, thanks for the 675...
> 
> 
> Woody, Xandros
> 
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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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