FC5 install and device mapper issue

[James Olson]

  Hi Heinz, 
Well, from memory it said something about magic numbers.  So since it couldn't verify that it was valid metadata it wouldn't back it up, and thus wouldn't erase it.  It would be nice to be able to erase metadata that it doesn't think is valid, but detects as bad (a force anyway option).  After I partitioned the drive and created filesystems the metadata went away, so no I can't provide a test case, but it was pdc metadata.
   -James 
> ----- Original Message -----
> From: "Heinz Mauelshagen" <mauelshagen at redhat.com>
> To: "ATARAID (eg, Promise Fasttrak,  Highpoint 370) related discussions" <ataraid-list at redhat.com>
> Subject: Re: FC5 install and device mapper issue
> Date: Fri, 14 Apr 2006 13:16:35 +0200
> 
> 
> On Wed, Apr 12, 2006 at 11:41:42PM -0500, James Olson wrote:
> >
> > > ----- Original Message -----
> > > From: hicham <hichamlinux at gmail.com>
> > > To: "ATARAID (eg, Promise Fasttrak,  Highpoint 370) related discussions" 
> > <ataraid-list at redhat.com>
> > > Subject: Re: FC5 install and device mapper issue
> > > Date: Wed, 12 Apr 2006 21:45:06 +0000
> > <snip..>
> >
> > Well if you might have unwanted raid metadata left on the drives you can verify that with # 
> > dmraid -v -r command.  If it detects any raid drives with that command that means there is 
> > still metadata left on the drives.  The command to erase metadata with dmraid doesn't work 
> > very well, you are better off erasing it from your controller's bios.
> 
> Hi James,
> 
> what issue did you detect with the -rD option to delete metadata ?
> Can you provide test cases for it ?
> 
> Thanks,
> Heinz
> 
> > Or you could just try the install with the nodmraid option like Peter suggested.
> >
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> 
> Heinz Mauelshagen                                 Red Hat GmbH
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> Mauelshagen at RedHat.com                            PHONE +49  171 7803392
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