From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: [LSF/MM TOPIC] SCSI referrals support Date: Thu, 20 Jan 2011 17:00:10 +0100 Message-ID: <4D385C0A.3000901@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from cantor2.suse.de ([195.135.220.15]:52140 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753058Ab1ATPxQ (ORCPT ); Thu, 20 Jan 2011 10:53:16 -0500 Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.221.2]) by mx2.suse.de (Postfix) with ESMTP id 0EF3C890B6 for ; Thu, 20 Jan 2011 16:53:16 +0100 (CET) Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: SCSI Mailing List Agenda topic proposal: SCSI referrals support has already been discussed at last year's LSF conference. However, the solution proposed there would not support failover and would require quite a lot of changes to multipathing. To enable failover it might be an idea to handle the LUN directly in multipathing. This would require eg: - request splitting - I/O alignment handling - SCSI unit attention handling I would be giving a short overview/presentation of the current state of the art, the shortcomings on the original proposal, and would like to invite a discussion on how to best support SCSI referrals. Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: Markus Rex, HRB 16746 (AG N=FCrnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html