From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Bryn M. Reeves" Subject: Re: Multipath setup and rdac questions Date: Thu, 05 Feb 2009 19:11:38 +0000 Message-ID: <498B39EA.1070903@redhat.com> References: <1a4a774c0902050558r661093dag83e71a06250c24aa@mail.gmail.com> <498B00B3.5020402@redhat.com> <1a4a774c0902051048keb6e681g7dbf2643a88a6d9e@mail.gmail.com> Reply-To: bmr@redhat.com, device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1a4a774c0902051048keb6e681g7dbf2643a88a6d9e@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids Christian R=F8snes wrote: > Is mpp another type of rdac driver than the one in question here ? I have no real experience with MPP so there are probably others who=20 can give more details but MPP is an entirely separate 3rd-party=20 multipath driver framework, a bit like EMC's PowerPath or other=20 vendor's multipathing solutions. Afaik, it supports several types of=20 device including RDAC. Part of your problem appears to be that you are trying to use /both/=20 mpp and device-mapper multipath on the same system at the same time.=20 Since they both try to do the same job this is guaranteed to lead to=20 problems - you need to chose one or the other & get it correctly=20 configured for your hardware. Regards, Bryn.