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From: James Bottomley <James.Bottomley@SteelEye.com>
To: "Scott M. Ferris" <sferris@acm.org>
Cc: Mike Christie <mikenc@us.ibm.com>,
	Mike Christie <michaelc@cs.wisc.edu>,
	Matthew Wilcox <willy@debian.org>, Christoph Hellwig <hch@lst.de>,
	iscsi -devel <linux-iscsi-devel@lists.sourceforge.net>,
	David Wysochanski <davidw@netapp.com>,
	"Surekha.PC" <surekhap@cisco.com>,
	SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: [linux-iscsi-devel] Re: [PATCH RFC] replace ioctl for sysfs take 2
Date: 07 Sep 2004 17:14:57 -0400	[thread overview]
Message-ID: <1094591701.2068.151.camel@mulgrave> (raw)
In-Reply-To: <20040907210520.0251476C56@isis.visi.com>

On Tue, 2004-09-07 at 17:05, Scott M. Ferris wrote:
> So a host is where you plug your (non-existent) bus?  I think it would
> be clearer to use terminology from SAM.

Actually, no.  A host is a SAM implementation, not SAM itself.  I think
the where are the resources question is the clearest way to look at it.

> > > Do you think switched SCSI transports should allocate one Linux host
> > > for each I_T nexus?
> > 
> > No.
> 
> This is exactly why I ask these questions.  The iSCSI driver
> developers just implemented this, because they thought this is what
> you and Christoph were asking for.  Apparently it's not what you
> wanted.

Well, that seems to be the correct thing to do.  Most of the time (all
of the time?) your virtual connection is to a single storage target, so
its identical to a bus with one device on it, isn't it? 

> > > Do you think switched SCSI transports should allocate one Linux host
> > > for each (SAM-2 or SAM-3) SCSI initiator device?
> > 
> > No.
> 
> Should all drivers that currently use one host for each SCSI initiator
> device, and a channel for each initiator port on each device, be
> modified to use a host for each initiator port?

I've made no secret about wanting to dump our channel abstraction. 
However, I'm not going to force a change like this.

James



  parent reply	other threads:[~2004-09-07 21:17 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <413557CB.8010008@cs.wisc.edu>
     [not found] ` <20040901162042.GC26753@null.msp.redhat.com>
2004-09-06 14:32   ` [linux-iscsi-devel] Re: [PATCH RFC] replace ioctl for sysfs take 2 Christoph Hellwig
2004-09-06 16:33     ` Matthew Wilcox
2004-09-06 18:15       ` Mike Christie
2004-09-06 18:54         ` Mike Christie
2004-09-06 22:48           ` Mike Christie
2004-09-06 23:11             ` James Bottomley
2004-09-07  2:46               ` Mike Christie
2004-09-07 15:35                 ` James Bottomley
2004-09-07 19:19                   ` Scott M. Ferris
2004-09-07 20:42                     ` James Bottomley
2004-09-07 21:05                       ` Scott M. Ferris
2004-09-07 21:12                         ` Mike Christie
2004-09-07 21:24                           ` Scott M. Ferris
2004-09-07 21:33                           ` James Bottomley
2004-09-07 21:37                             ` Mike Christie
2004-09-07 22:05                               ` James Bottomley
2004-09-07 22:40                                 ` Mike Christie
2004-09-07 22:57                                   ` Mike Christie
2004-09-08 10:27                                     ` Mike Christie
2004-09-07 23:34                                   ` James Bottomley
2004-09-08  9:19                                     ` Mike Christie
2004-09-08 14:53                                       ` James Bottomley
2004-09-07 21:14                         ` James Bottomley [this message]
2004-09-08  2:33                         ` Douglas Gilbert
2004-09-08 14:38                           ` Randy.Dunlap
2004-09-08 18:11                             ` Bryan Henderson
2004-09-09  0:40                             ` Douglas Gilbert
2004-09-09 15:40                               ` AJ Lewis
2004-09-07 15:24         ` AJ Lewis

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