linux-kernel - Re: [RFC v2 00/21] TCM Core and TCM

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Date:	Wed, 06 Oct 2010 21:13:58 +0400
From:	Vladislav Bolkhovitin <vst@...b.net>
To:	Tejun Heo <tj@...nel.org>
CC:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	michaelc@...wisc.edu, hch@....de, hare@...e.de,
	James.Bottomley@...e.de, axboe@...nel.dk, bharrosh@...asas.com,
	jeff@...zik.org
Subject: Re: [RFC v2 00/21] TCM Core and TCM_Loop patches for v2.6.37

Tejun Heo, on 10/06/2010 06:10 PM wrote:
> On 10/06/2010 09:24 AM, Nicholas A. Bellinger wrote:
>>> I like to hear the opinions of SCSI maintainer and ATA folks.
>>
>> jejb, jgarzik, tejun and co..?  Any thoughts here..?
> 
> I frankly have no idea whatsoever.  Is there something I can read to
> educate myself on the subject?

General information about a SCSI target subsystem you can find in
http://scst.sourceforge.net. More internal details about implementation
in http://scst.sourceforge.net/scst_pg.html. Features which are
implemented in http://scst.sourceforge.net/comparison.html.

Directly on the subject you can find some considerations in
http://lkml.org/lkml/2010/10/1/140 (second half of the message).

My opinion is that in ideal the SCSI initiator subsystem should be
drivers/scsi/initiator and the target subsystem - drivers/scsi/target
with shared code in drivers/scsi/. But in reality such big
reorganization is unlikely possible, so it's better to leave SCSI
initiator subsystem in drivers/scsi and the target subsystem - in the
separate directory in drivers/ (drivers/scst for SCST).

Vlad
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