Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964885AbbFJOAA (ORCPT ); Wed, 10 Jun 2015 10:00:00 -0400 Received: from smtp2.provo.novell.com ([137.65.250.81]:47127 "EHLO smtp2.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964841AbbFJN7w (ORCPT ); Wed, 10 Jun 2015 09:59:52 -0400 Message-ID: <557842CE.2040204@suse.com> Date: Wed, 10 Jun 2015 08:59:42 -0500 From: Goldwyn Rodrigues User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Richard Weinberger CC: David Teigland , LKML , NeilBrown Subject: Re: clustered MD References: <20150609182102.GA4305@redhat.com> <55773DE1.7080107@suse.com> <20150609194505.GA17536@redhat.com> <557747AB.7080706@suse.com> <20150609203056.GB17536@redhat.com> <5577AFF4.6020505@suse.com> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 958 Lines: 28 On 06/10/2015 03:00 AM, Richard Weinberger wrote: > On Wed, Jun 10, 2015 at 5:33 AM, Goldwyn Rodrigues wrote: >> David Lang has already responded: The idea is to use a RAID device >> (currently only level 1 mirroring is supported) with multiple nodes of the >> cluster. >> >> Here is a description on how to use it: >> http://marc.info/?l=linux-raid&m=141935561418770&w=2 > > Sorry if this is a stupid question, but how does this compare to DRBD? > No, it is not. DRBD is for local devices synced over the network. Cluster-md is for shared devices such as SAN, so all syncs happen over the FC. DRBD works for two nodes (until recently), cluster-md works for multiple nodes. -- Goldwyn -- 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/