linux-kernel - Re: Why aren't partitions limited to fit within the device?

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Message-Id: <1160983735.32674.4.camel@frg-rhel40-em64t-03>
Date:	Mon, 16 Oct 2006 09:28:55 +0200
From:	Xavier Bestel <xavier.bestel@...e.fr>
To:	Neil Brown <neilb@...e.de>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org,
	aeb@....nl, Jens Axboe <jens.axboe@...cle.com>
Subject: Re: Why aren't partitions limited to fit within the device?

On Mon, 2006-10-16 at 10:08 +1000, Neil Brown wrote:
> On Friday October 13, alan@...rguk.ukuu.org.uk wrote:
> > Ar Gwe, 2006-10-13 am 09:50 +1000, ysgrifennodd Neil Brown:
> > > So:  Is there any good reason to not clip the partitions to fit
> > > within the device - and discard those that are completely beyond
> > > the end of the device??
> > 
> > Its close but not quite the right approach
> > 
> > > The patch at the end of the mail does that.  Is it OK to submit this
> > > to mainline?
> > 
> > No I think not. Any partition which is partly outside the disk should be
> > ignored entirely, that ensures it doesn't accidentally get mounted and
> > trashed by an HPA or similar mixup.
> 
> Hmmm.. So Alan things a partially-outside-this-disk partition
> shouldn't show up at all, and Andries thinks it should.
> And both give reasonably believable justifications.

Maybe the whole part table should be marked as "weird" to let userspace
run a diagnostics/repair tool on the disk.

	Xav

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