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To: Scott Long <scottl@samsco.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sun, 11 Sep 2005 10:50:46 MDT."
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Date: Sun, 11 Sep 2005 18:59:02 +0200
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Cc: =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>,
	Jung-uk Kim <jkim@freebsd.org>, freebsd-arch@freebsd.org
Subject: Re: Bigger boot block size? 
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In message <43246066.8070709@samsco.org>, Scott Long writes:
>Poul-Henning Kamp wrote:

>> There are perfectly good arguments for metadata at front and metadata
>> at the end and none of the arguments is definitive.
>> 
>There are actually very good arguments for putting the metadata at the 
>end of the components.  Consider that it means that you can boot a
>gmirror array without system BIOS support.

Yes, and it doesn't screw up stripe alignment etc.

But there are also good arguments for putting it up front, which
is why I don't want to impose either view on anybody.

This also makes a lot of sense since we don't get to dictate
the majority of disk metadata rules.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.