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

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Message-ID: <Pine.LNX.4.64.0705162145060.31624@asgard.lang.hm>
Date:	Wed, 16 May 2007 21:45:41 -0700 (PDT)
From:	david@...g.hm
To:	Neil Brown <neilb@...e.de>
cc:	Jeff Zheng <Jeff.Zheng@...ace.com>,
	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 Thu, 17 May 2007, Neil Brown wrote:

> 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.

2T decimal or 2T binary?

> 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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