From owner-freebsd-current  Mon Jan 13  0: 2:34 2003
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Date: Mon, 13 Jan 2003 19:03:02 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Nate Lawson <nate@root.org>
Cc: Sean Kelly <smkelly@zombie.org>, <current@FreeBSD.ORG>
Subject: Re: fdisk issues?
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On Mon, 13 Jan 2003, Bruce Evans wrote:

> On Sun, 12 Jan 2003, Nate Lawson wrote:
>
> > On Sun, 12 Jan 2003, Sean Kelly wrote:
> > > edgemaster# fdisk ad1
> > > Floating exception (core dumped)
> ...
> > The more important question
> > is "who in the kernel is setting these to 0?" as that part needs work too.
>
> Well, fdisk itself sets these to 0.  The ioctls to get the number of
> heads and sectors may fail because they are unimplemented, and then
> the sloppy error handling in the code quoted above bites.  It divides
> if the DIOCGMEDIASIZE ioctl succeeded, but a divisor is 0 if the earlier
> head or sector ioctl failed.  The head and/or sector counts are only
> statically initialized to 0 in this case, since the fallback which set
> them to 1 was axed.

This explains Sean's case.  He was not using GEOM (see his original mail).

Bruce


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