Re: RFC: Add WWN in superblock

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On Mon, 13 Aug 2012 18:29:31 +0800 "Jianpeng Ma" <majianpeng@xxxxxxxxx> wrote:

> 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 this attribute),
> we can find the orders anything.
> 
> 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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