linux-kernel - RE: Software raid0 will crash the file-system, when each disk is 5TB

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Date:	Thu, 17 May 2007 12:45:22 +1000
From:	Neil Brown <neilb@...e.de>
To:	"Jeff Zheng" <Jeff.Zheng@...ace.com>
Cc:	"Michal Piotrowski" <michal.k.k.piotrowski@...il.com>,
	"Ingo Molnar" <mingo@...e.hu>, <linux-raid@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
Subject: RE: Software raid0 will crash the file-system, when each disk is 5TB

On Thursday May 17, Jeff.Zheng@...ace.com wrote:
> 
> > The only difference of any significance between the working 
> > and non-working configurations is that in the non-working, 
> > the component devices are larger than 2Gig, and hence have 
> > sector offsets greater than 32 bits.
> 
> Do u mean 2T here?, but in both configuartion, the component devices are
> larger than 2T (2.25T&5.5T).

Yes, I meant 2T, and yes, the components are always over 2T.  So I'm
at a complete loss.  The raid0 code follows the same paths and does
the same things and uses 64bit arithmetic where needed.

So I have no idea how there could be a difference between these two
cases.  

I'm at a loss...

NeilBrown
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