Date: Wed, 25 Dec 2002 16:08:33 -0500 From: Craig Rodrigues <rodrigc@attbi.com> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-current@FreeBSD.ORG, phk@FreeBSD.ORG Subject: Re: Cannot open "/dev/ad0" on -CURRENT Message-ID: <20021225210833.GA12496@attbi.com> In-Reply-To: <20021225053746.A18667@citusc.usc.edu> References: <20021224133110.A14309@attbi.com> <20021225053746.A18667@citusc.usc.edu>
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On Wed, Dec 25, 2002 at 05:37:46AM -0800, Kris Kennaway wrote:
> On Tue, Dec 24, 2002 at 01:31:10PM -0500, Craig Rodrigues wrote:
>
> > Any ideas what the problem could be?
>
> geom seems to have anti-foot-shooting measures in place to disallow
> access to the disk device when a partition on that disk is open.
Are you referring to this in src/sys/geom/geom_bsd.c?
547 /*
548 * If the user tries to overwrite our disklabel through an open partition
549 * or via a magicwrite config call, we end up here and try to prevent
550 * footshooting as best we can.
551 */
552 static void
553 g_bsd_hotwrite(void *arg)
The result of this is that I booted off of a slice contained on the
/dev/ad0 disk, then I cannot add new partitions to /dev/ad0
with sysinstall, even if I am root.
--
Craig Rodrigues
http://www.gis.net/~craigr
rodrigc@attbi.com
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