From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthias Urlichs <matthias@urlichs.de>
Subject: Re: RAID1 assembled broken array
Date: Wed, 16 Sep 2009 06:50:34 +0200
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	 <9F2F4760-DF0C-4416-89AC-C689177AD4ED@redhat.com>
	 <65549e07fd6559855af68b60783213c3.squirrel@neil.brown.name>
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To: NeilBrown <neilb@suse.de>
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On Wed, 2009-09-16 at 07:01 +1000, NeilBrown wrote:
> 1.0 also protects from this problem.

So what's the best way to update a 0.9 superblock to 1.0 format?

mdadm --assemble --metadata=1.0 --update=summaries ... ?