linux-kernel - Re: status of block-integrity

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Message-ID: <yq1vbxssj0e.fsf@sermon.lab.mkp.net>
Date:	Thu, 09 Jan 2014 20:49:53 -0500
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Hannes Reinecke <hare@...e.de>
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	"Darrick J. Wong" <darrick.wong@...cle.com>,
	chuck.lever@...cle.com, Christoph Hellwig <hch@...radead.org>,
	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, Doug Gilbert <dgilbert@...erlog.com>
Subject: Re: status of block-integrity

>>>>> "Hannes" == Hannes Reinecke <hare@...e.de> writes:

Hannes> With LID1/XCopy you have the ambiguity on where to actually send
Hannes> the command to; the spec is silent in this area.

Yeah, right now it's a coin toss.

However, thanks to VAAI most arrays support LID1. I'm trying to leverage
that. Doesn't in any way preclude LID4 being supported as well.

Hannes> As said, Doug and me are working on putting this into sg3_utils,
Hannes> then we'll have a better idea on the actual workings.

Cool! That'll save me some headaches when we start seeing LID4 devices.

-- 
Martin K. Petersen	Oracle Linux Engineering
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