Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261281AbVEBOaa (ORCPT ); Mon, 2 May 2005 10:30:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261280AbVEBOaa (ORCPT ); Mon, 2 May 2005 10:30:30 -0400 Received: from magic.adaptec.com ([216.52.22.17]:744 "EHLO magic.adaptec.com") by vger.kernel.org with ESMTP id S261271AbVEBOaV (ORCPT ); Mon, 2 May 2005 10:30:21 -0400 Message-ID: <42763975.8010103@adaptec.com> Date: Mon, 02 May 2005 10:30:13 -0400 From: Luben Tuikov User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Christoph Hellwig CC: SCSI Mailing List , Linux Kernel Mailing List , andrew.patterson@hp.com, Eric.Moore@lsil.com, mike.miller@hp.com, dougg@torque.net, Madhuresh_Nagshain@adaptec.com Subject: Re: [RFC] SAS domain layout for Linux sysfs References: <425D392F.2080702@adaptec.com> <20050424111908.GA23010@infradead.org> <426D1572.70508@adaptec.com> <20050425161411.GA11938@infradead.org> <426D2723.8070308@adaptec.com> <20050425181831.GA14190@infradead.org> <426E5BAF.4040003@adaptec.com> <20050429100525.GA3342@infradead.org> In-Reply-To: <20050429100525.GA3342@infradead.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 02 May 2005 14:30:15.0611 (UTC) FILETIME=[750C30B0:01C54F23] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1355 Lines: 40 On 04/29/05 06:05, Christoph Hellwig wrote: > Sure, quoting your initial mail: > > /---------------------------------------------------------------------- > | 2. Sysfs SAS Domain > | ------------------- > | > | Represent everything which "sits out there" in the SAS > | domain, irrespective of how you connect to it. > | > | /sys/bus/sas/ > | /sys/bus/sas// > | /sys/bus/sas//phys/ > | > | ... > \---------------------------------------------------------------------- > > Here you have a global hiearchy. We are not interested in that, though - > we only care for what's visible from a certain HBA. True, it is a "global" hierarchy. But visiblity from a single HBA is also present in /sys/class/sas_ha/... . >>Overall, since the discovery process gets (internally) a "picture" >>of the domain out there, it would be appropriate to show this >>"picture" to the user. > > Absolutely. Ok, so then we want some kind of "global" representation? Since the discover process (in its attempt to discover topology errors) would have to know little or less about the "global" outlook. Luben - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/