linux-kernel - RE: [PATCH] scsi:storvsc enable reading from VPD pages on SPC-2

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Message-ID: <BY2PR0301MB0711CF1C9FBD8EFED89B3911A0620@BY2PR0301MB0711.namprd03.prod.outlook.com>
Date:	Wed, 10 Dec 2014 23:30:30 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Long Li <longli@...rosoft.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
CC:	Haiyang Zhang <haiyangz@...rosoft.com>,
	"JBottomley@...allels.com" <JBottomley@...allels.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi:storvsc enable reading from VPD pages on SPC-2



> -----Original Message-----
> From: Long Li
> Sent: Wednesday, December 10, 2014 2:28 PM
> To: Martin K. Petersen
> Cc: KY Srinivasan; Haiyang Zhang; JBottomley@...allels.com; linux-
> scsi@...r.kernel.org; devel@...uxdriverproject.org; linux-
> kernel@...r.kernel.org
> Subject: RE: [PATCH] scsi:storvsc enable reading from VPD pages on SPC-2
> 
> > >>>>> "Long" == Long Li <longli@...rosoft.com> writes:
> >
> > Long> MSFT targets currently claim SPC-2 compliance while they
> > Long> implement post SPC-2 features. With this patch we can correctly
> > Long> handle
> > Long> WRITE_SAME_16 issues.
> >
> > Handle the issues or handle WRITE SAME(10/16)?
> 
> With this patch, the SCSI layer will be able to correctly send WRITE_SAME_16
> to the Hyper-V host. It will not send WRITE_SAME_10: it has been disabled in
> the driver template. Do you want me to send another patch with these
> details?
> 
> >
> > +	{"Msft", "Virtual Disk", "1.0", BLIST_TRY_VPD_PAGES},
> >
> > Is that version field meaningful or is it safe for us to inquire about
> > VPD pages without problems on older versions?
> 
> This version is used in all current Hyper-V hosts: Windows 2008 R2, 2012 and
> 2012 R2. However it may change in future Windows releases.

The next version of the host will be claiming conformance to SPC-3

K. Y
> 
> >
> > --
> > Martin K. Petersen	Oracle Linux Engineering
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