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Date:      Mon, 18 Jan 2010 22:05:00 +0000
From:      Mike Clarke <jmc-freebsd2@milibyte.co.uk>
To:        freebsd-questions@freebsd.org
Cc:        Pieter de Goeje <pieter@degoeje.nl>
Subject:   Re: Newbie gmirror questions
Message-ID:  <201001182205.00543.jmc-freebsd2@milibyte.co.uk>
In-Reply-To: <4B538459.7090601@infracaninophile.co.uk>
References:  <201001152334.52978.jmc-freebsd2@milibyte.co.uk> <201001172122.15128.jmc-freebsd2@milibyte.co.uk> <4B538459.7090601@infracaninophile.co.uk>

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On Sunday 17 January 2010, Matthew Seaman wrote:

> However, one of the really amazingly brilliant things about geom is
> that just about any disk / storage related thing can be a geom
> provider, and geom constructs will nest very happily. =A0Here's a howto
> for setting up gmirror across a pair of slices:
>
> http://people.freebsd.org/~rse/mirror/

That's a very interesting article. Since I'll be able to configure the=20
mirror on the new drives before installing any software my approach can=20
be a bit simpler.

In the example he's using a single partition for the whole disk but=20
reduces the size if the partition by one block so that the mirror's=20
meta data doesn't get misinterpreted as whole disk meta data. Since I=20
anticipate using only the first 2 partitions for a couple of mirrors=20
and using the rest of the disk as plain partitions then I don't think I=20
need to do this but might it still be a good idea to reduce the last=20
partition by one block anyway in case my usage changes in the future?

=2D-=20
Mike Clarke



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