linux-kernel - RE: [PATCH 1/1] staging: hv: Add support for >2 TB LUN in storage driver.

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Date:	Tue, 6 Sep 2011 15:33:53 +0000
From:	Mike Sterling <Mike.Sterling@...rosoft.com>
To:	Greg KH <gregkh@...e.de>
CC:	Haiyang Zhang <haiyangz@...rosoft.com>,
	Hank Janssen <hjanssen@...rosoft.com>,
	KY Srinivasan <kys@...rosoft.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"virtualization@...ts.osdl.org" <virtualization@...ts.osdl.org>
Subject: RE: [PATCH 1/1] staging: hv: Add support for >2 TB LUN in storage
 driver.

On Thu, Sep 1, 2011 at 03:22:00PM +0800, Greg KH wrote:
>On Thu, Sep 01, 2011 at 03:11:09PM -0700, Mike Sterling wrote:
>> If a LUN larger than 2 TB is attached to a Linux VM on Hyper-V, we 
>> currently report a maximum size of 2 TB. This patch resolves the issue in hv_storvsc.
>> Thanks to Robert Scheck <robert.scheck@...s.de> for reporting the issue.
>> 
>> Reported-by: Robert Scheck <robert.scheck@...s.de>
>> Signed-off-by: Mike Sterling <mike.sterling@...rosoft.com>
>> Signed-off-by: K.Y. Srinivasan <kys@...rosoft.com>
>> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
>
>Much better, thanks.
>
>Is this something that needs to go to older kernels (3.0, 2.6.32, etc.) as well?

I discussed this with Ky. Given the changes that have taken place with the hv_* code, it's unlikely that this patch would just work with downlevel kernels. I'll need to create separate patches for those kernels.

-Mike
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