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Date: Sat, 3 Jul 2004 19:45:13 -0700 (PDT)
From: Doug White <dwhite@gumbysoft.com>
To: Danny Braniss <danny@cs.huji.ac.il>
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cc: freebsd-stable@freebsd.org
cc: Soren Schmidt <sos@FreeBSD.org>
Subject: Re: problems with RAID0 and Intel/SE7501WV2/Promise 
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On Sat, 3 Jul 2004, Danny Braniss wrote:

> > > How did you construct the array volume?  This looks like one of the
> > > offsets in the disklabel is wrong.
> > >
> >
> > I used sysinstall, and disklabel -e to change the partition letters.
> > The problem appears after several hours of disk usage, and the only
> > partition in use is h.
> >
> whops, rereading the question, here is the correct answer, sorry.
>
> I used the bios to define the raid0, stripe, 2 disks.
> (the menu is 'fool-proof', so i guess i couldn't have made a mistook :-)

OK, so you used the ATA controller's menu to construct the RAID array,
then used sysinstall to slice the ensuing volume. Hm.  It appears that
writes to sector 0 are disallowed.  Can you try installing without the
array defined, to make sure the disks are writable otherwise?

> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad4: hard error writing fsbn 0 (ad4
> > > > bn 0; cn 0 tn 0 sn 0) trying PIO mode
> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad6: hard error writing fsbn 0 (ad6
> > > > bn 0; cn 0 tn 0 sn 0) status=51 error=10
> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken
> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad4: hard error writing fsbn 0 (ad4
> > > > bn 0; cn 0 tn 0 sn 0) status=51 error=10
> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken
> > > > Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org