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

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Date:	Thu, 11 Dec 2014 18:49:58 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Sitsofe Wheeler <sitsofe@...il.com>
CC:	Long Li <longli@...rosoft.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	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: Sitsofe Wheeler [mailto:sitsofe@...il.com]
> Sent: Thursday, December 11, 2014 2:54 AM
> To: KY Srinivasan
> Cc: Long Li; Martin K. Petersen; 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
> 
> On Wed, Dec 10, 2014 at 11:30:30PM +0000, KY Srinivasan wrote:
> >
> > > >
> > > > +	{"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
> 
> Will the version number ("1.0") of Virtual Disks also be changed? Part of me
> hopes it will as it will mean certain quirks for virtual disks will be easier to
> apply and won't need host version (are you 2008, 2012,
> 2016) version logic...

Spoke to the folks on Windows side of the house. They currently don't have plans to
Change the version number ("1.0").

K. Y
> 
> --
> Sitsofe | http://sucs.org/~sits/
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