RFC: Add WWN in superblock

2 messages, 2 authors, 2012-08-13 · open the first message on its own page

RFC: Add WWN in superblock

From: Jianpeng Ma <hidden>
Date: 2012-08-13 10:29:31

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!

Re: RFC: Add WWN in superblock

From: NeilBrown <hidden>
Date: 2012-08-13 23:54:59

On Mon, 13 Aug 2012 18:29:31 +0800 "Jianpeng Ma" [off-list ref] 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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