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Date:      Sat, 30 Nov 2013 14:17:39 -0700 (MST)
From:      Warren Block <>
To:        "Mike." <>
Subject:   Re: gmirror, gpart and MBR vs GPT in the Handbook
Message-ID:  <>
In-Reply-To: <201311301303210813.05DE187E@smtp.24cl.home>
References:  <201311301303210813.05DE187E@smtp.24cl.home>

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On Sat, 30 Nov 2013, Mike. wrote:

> The Handbook page about creating a gmirror array
> ( )
> has the command:
> 	gpart create -s MBR mirror/gm0
> I've read elsewhere in the handbook that GPT is preferrable to
> the older and less versatile MBR scheme.

Mostly, it is.

> Is there a specific reason why MBR was used in the Handbook
> example for creating a mirror, instead of GPT?

Yes, there was, see the last paragraph of the Metadata Issues 

> Or was it just a preference of the person who wrote that Handbook 
> page?

That was me, and I would much prefer GPT.  However, whole-disk gmirror 
metadata and the GPT backup table conflict.

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