Date: Fri, 7 Jun 2002 01:50:01 +0300 From: =?iso-8859-7?b?tuPj5evv8iDP6erv7e/s/PDv9evv8g==?= <aoiko@cc.ece.ntua.gr> To: Doug White <dwhite@resnet.uoregon.edu> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Cannot access disk Message-ID: <200206070145.21754.aoiko@cc.ece.ntua.gr> In-Reply-To: <20020606123539.K55995-100000@resnet.uoregon.edu> References: <20020606123539.K55995-100000@resnet.uoregon.edu>
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On Thursday 06 June 2002 22:36, Doug White wrote:
> On Thu, 6 Jun 2002, Aggelos Economopoulos wrote:
> > After adding a 40G ide disk(ad3) on my system, I 'ld like to devote
> > some extra space to FreeBSD (there is already a linux installation on
> > the 40G disk). However, after booting my -stable installation on the
> > first disk(ad0), I get the error message "excessive recursion in sear=
ch
> > for slices" by the kernel on any attempt to access ad3 (mount a
> > partition, fdisk -s /dev/ad3, or even a read() on ad3).
>
> Try zeroing off the beginning of the disk with dd; maybe there's a
> corrupt partition table there.
No, the partition table is _not_ corrupt. As I mentioned before, I have a=
=20
working linux installation on said disk. Moreover, I can parse the=20
partition table chain under the linux kernel (using userspace tools) but=20
under freebsd I get the same error as the freebsd kernel partition handli=
ng=20
code. I even read the mbr pt + extended pts with a hex editor, they are=20
just fine. I' ve spent about two weeks on the subject before ruling out a=
ll=20
posibilities that this is a partition handling problem.
This could only be a bug in the bio layer or some kernel quirk that I am =
not=20
aware of. The only reason that I do not give any more information is that=
I=20
don't have a clue about where to look myself.
Thanks for trying to help.
--=20
Use recursive procedures for recursively-defined data structures.
- The Elements of Programming Style (Kernighan & Plaugher)
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