From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Domsch Subject: Re: Proposed enhancements to MD Date: Fri, 16 Jan 2004 07:43:36 -0600 Sender: linux-kernel-owner@vger.kernel.org Message-ID: <20040116074336.A12893@lists.us.dell.com> References: <40033D02.8000207@adaptec.com> <16389.52150.148792.875315@notabene.cse.unsw.edu.au> <20040115155221.A31378@lists.us.dell.com> <20040116092447.GF22417@marowsky-bree.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20040116092447.GF22417@marowsky-bree.de>; from lmb@suse.de on Fri, Jan 16, 2004 at 10:24:47AM +0100 To: Lars Marowsky-Bree Cc: Neil Brown , Scott Long , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, Jan 16, 2004 at 10:24:47AM +0100, Lars Marowsky-Bree wrote: > Do you know whether DDF can also support simple multipathing? Yes, the structure info for each physical disk allows for two (and only 2) paths to be represented. But it's pretty limited, describing only SCSI-like paths with bus/id/lun only described in the current draft. At the same time, there's a per-physical-disk GUID, such that if you find the same disk by multiple paths you can tell. There's room for enhancment/feedback in this space for certain. Thanks, Matt -- Matt Domsch Sr. Software Engineer, Lead Engineer Dell Linux Solutions www.dell.com/linux Linux on Dell mailing lists @ http://lists.us.dell.com