From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: RFC: Add WWN in superblock
Date: Tue, 14 Aug 2012 09:54:59 +1000
Message-ID: <20120814095459.009ad345@notabene.brown>
References: <201208131829289067947@gmail.com>
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To: Jianpeng Ma <majianpeng@gmail.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
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On Mon, 13 Aug 2012 18:29:31 +0800 "Jianpeng Ma" <majianpeng@gmail.com> wro=
te:

> Hi neil:
> 	In mailist, many people ask the question about disk order.
> But because the reboot or anthor probelm, the disk-name maybe change.
> So we can't get disk-order.But if we can add WWN(Now,most harddisk has th=
is attribute),
> we can find the orders anything.
>=20
> Thanks!

What exactly do you propose doing with a WWN - how would you use it.

The metadata already contains enough information to determine the correct
disk order.

NeilBrown

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