From owner-cvs-src@FreeBSD.ORG  Sun Feb 25 14:54:22 2007
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From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=)
To: Brooks Davis <brooks@FreeBSD.org>
References: <200702091903.l19J3Ik5099479@repoman.freebsd.org>
Date: Sun, 25 Feb 2007 15:54:17 +0100
In-Reply-To: <200702091903.l19J3Ik5099479@repoman.freebsd.org> (Brooks Davis's
	message of "Fri, 9 Feb 2007 19:03:18 +0000 (UTC)")
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/amd64/conf GENERIC src/sys/i386/conf
	GENERIC src/sys/ia64/conf GENERIC src/sys/pc98/conf GENERIC
	src/sys/powerpc/conf GENERIC src/sys/sparc64/conf GENERIC
	src/sys/sun4v/conf GENERIC
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Brooks Davis <brooks@FreeBSD.org> writes:
>   Log:
>   Include GEOM_LABEL in GENERIC.  It's very useful and not well publicized
>   enough.

Bad idea.  GEOM_LABEL can lead to filesystem corruption when used in
conjunction with mirrored disks.  You mount /dev/ufs/root thinking it
corresponds to /dev/ar0s1a, when in fact it corresponds to /dev/ad0s1a
(in most cases, if ad0 is a component of RAID 1 array ar0, ad0s1a will
be tasted before ar0s1a, and GEOM_LABEL does not handle multiple
identically labeled providers gracefully).

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no