linux-kernel - RE: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests

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Message-ID: <548c8b1bae75483aa47c9493b62dc04d@BY2PR0301MB0711.namprd03.prod.outlook.com>
Date:	Mon, 28 Jul 2014 19:05:10 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
CC:	Sitsofe Wheeler <sitsofe@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"jbottomley@...allels.com" <jbottomley@...allels.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
Subject: RE: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests



> -----Original Message-----
> From: Martin K. Petersen [mailto:martin.petersen@...cle.com]
> Sent: Monday, July 28, 2014 12:03 PM
> To: KY Srinivasan
> Cc: Martin K. Petersen; Sitsofe Wheeler; Christoph Hellwig;
> gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; ohering@...e.com; apw@...onical.com;
> jasowang@...hat.com; jbottomley@...allels.com; linux-
> scsi@...r.kernel.org
> Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
> 
> >>>>> "KY" == KY Srinivasan <kys@...rosoft.com> writes:
> 
> KY,
> 
> KY> "At the time thin-provisioning was defined, the discovery
> KY> information was first proposed in READ CAPACITY 16 command. And
> then
> KY> moved into the new dedicated VPD page - B2h. You can see the
> KY> information reported in this VPD page is richer than READ CAPACITY
> KY> 16 command. As this transition happened during we added the feature,
> KY> Windows uses the newer method that based on VPD page B2h. It looks
> KY> Linux tries to use both new and old method which is weird to me."
> 
> The READ CAPACITY(16) response is not optional.

Ok; that settles the issue then. I will attempt to get it fixed on Windows.

K. Y

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