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Date:      Sun, 28 Jun 2009 17:25:42 +0400
From:      Aisaka Taiga <spambox@haruhiism.net>
To:        Ivan Voras <ivoras@freebsd.org>
Cc:        freebsd-geom@freebsd.org, Marcel Moolenaar <xcllnt@mac.com>, freebsd-questions@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: gmirror gm0 destroyed on shutdown; GPT corrupt
Message-ID:  <4A476F56.2030504@haruhiism.net>
In-Reply-To: <9bbcef730906280551r26e30b61oc84acdd02d94743e@mail.gmail.com>
References:  <20090625110253.GA31443@mech-cluster238.men.bris.ac.uk> <10FCC74D-6D46-4112-AD89-BBB4C5933957@mac.com>	<h24v15$70v$1@ger.gmane.org> <2FFFB36F-EFA3-4D92-98A3-692BA2D6F63E@mac.com> <9bbcef730906280551r26e30b61oc84acdd02d94743e@mail.gmail.com>

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Ivan Voras wrote:
> Yes, it would be cleaner to implement but it would also make the
> mirrored devices unbootable.
> But maybe the class of users needing the functionality is smaller now.
>   
Most dedicated server providers can't afford to use hardware RAID 
systems because that would drastically increase the price of a single 
system; yet many customers want mirroring.
> Looks too complicated and fragile. Maybe there's a need for
> metadata-less automatic mirrors in some way, by storing the
> configuration somewhere else, possibly in /etc.
This might be dangerous in some cases. Imagine booting with two drives 
swapped; such a configuration might lead to data corruption on a volume 
which was enumerated incorrectly or swapped.

--
Kamigishi Rei
KREI-RIPE



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