From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: Replace RAID devices without resorting to degraded mode?
Date: Thu, 13 Mar 2014 10:18:33 +1100
Message-ID: <20140313101833.7fccbabe@notabene.brown>
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To: David Brown <david.brown@hesbynett.no>
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On Wed, 12 Mar 2014 13:45:31 +0100 David Brown <david.brown@hesbynett.no>
wrote:

> So for raid1, you would add a new mirror device, making a 3-way mirror
> instead of a 2-way one (I don't know off-hand if md raid allows this
> re-shape).

It sure does. raid1 can be 1-way, 2-way, 3-way, 4-way ..... and "mdadm
--grow" can easily switch between them.

NeilBrown


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