From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:49669) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QPF8a-0005a4-1R for qemu-devel@nongnu.org; Wed, 25 May 2011 10:32:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QPF8Z-00015L-6S for qemu-devel@nongnu.org; Wed, 25 May 2011 10:32:39 -0400 Received: from verein.lst.de ([213.95.11.211]:52063 helo=newverein.lst.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QPF8Y-00014z-Uz for qemu-devel@nongnu.org; Wed, 25 May 2011 10:32:39 -0400 Date: Wed, 25 May 2011 15:17:05 +0200 From: Christoph Hellwig Message-ID: <20110525131705.GD2283@lst.de> References: <1305903817-25476-1-git-send-email-pbonzini@redhat.com> <20110520161436.GA5149@lst.de> <4DD6A6DA.6040808@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4DD6A6DA.6040808@redhat.com> Subject: Re: [Qemu-devel] [RFC PATCH 0/6] SCSI series part 2, rewrite LUN parsing List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: qemu-devel@nongnu.org On Fri, May 20, 2011 at 07:37:30PM +0200, Paolo Bonzini wrote: > On 05/20/2011 06:14 PM, Christoph Hellwig wrote: >> I don't quite understand what you mean with path here. It doesn't >> seem to map to any SAM concept, nor does it seem to be related >> to traditional multipathing. > > It's what SAM calls a "bus identifier" in the description of LUN addressing > modes. Ok, so it more or less translates to the concept of a "channel" in the Linux SCSI subsystem. It would help if you could explain the concept in a bit more detail in a comment. Or in fact not bother with it at all, which should be easy if we never present hierachial LUNs.