linux-kernel - Re: [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags

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Message-ID: <20140723153125.GA520@sucs.org>
Date:	Wed, 23 Jul 2014 16:31:25 +0100
From:	Sitsofe Wheeler <sitsofe@...il.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>, 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 1/1] Drivers: scsi: storvsc: Add blist flags

On Wed, Jul 23, 2014 at 07:10:14AM -0700, Christoph Hellwig wrote:
> On Wed, Jul 23, 2014 at 01:54:43PM +0100, Sitsofe Wheeler wrote:
> > That's good to know (I was worried the device would not be detected as
> > supporting discard because it doesn't report lbpme and doesn't declare a
> > conformance version (see below)).
> 
> Ok, that makes things worse - you might be able to force it through
> sysfs, though.

I've got a hack that seems to be working for me - see below.

> > Is there a tree with all these updates
> > in or do they need to be pieced together from this email thread?
> 
> I'm picking this up for my scsi-queue tree.  Still need a review
> for the patch we're replying to before that one can go in, though.

OK.

> > Additionally is it worth quirking sd_try_rc16_first on when
> > BLIST_TRY_VPD_PAGES is present?
> 
> Sounds reasonable to me.

OK did you want me to post a set of changes to your patch? I've
basically changed the patches from bypassing the SCSI level check (to
allow scanning of VPD pages) to also try READ_CAPACITY(16) first and
bypass lbpme checks. Now it's more of a case of BLIST_TRY_LBP...

-- 
Sitsofe | http://sucs.org/~sits/
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