From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stan Hoeppner Subject: Re: Network-based RAID6 Date: Thu, 31 Mar 2011 00:35:49 -0500 Message-ID: <4D9412B5.30203@hardwarefreak.com> References: <20110330131157.49fd2521@natsu> <20110330144944.3c87185c@natsu> <4D933188.30003@hardwarefreak.com> <20110330235052.3a803d35@natsu> <4D94097A.3030909@hardwarefreak.com> <20110331111613.06079a0a@natsu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110331111613.06079a0a@natsu> Sender: linux-raid-owner@vger.kernel.org To: Roman Mamedov Cc: CoolCold , linux-raid@vger.kernel.org List-Id: linux-raid.ids Roman Mamedov put forth on 3/31/2011 12:16 AM: > On Wed, 30 Mar 2011 23:56:26 -0500 > Stan Hoeppner wrote: > >> Roman Mamedov put forth on 3/30/2011 12:50 PM: >>> So I guess a viable and interesting solution could be an mdadm stripe over >>> two or more DRBD mirrors, effectively providing RAID10. Although that's >>> not quite what I am looking for (RAID5/6-levels of overhead and >>> resilience). >> >> The mdraid driver sits beneath DRBD. What you suggest above is impossible. > > I thought DRBD presents just a regular kernel-level block device in /dev, and > seeing how one can create mdraid out of just any kind of block device, > including those provided by AoE, iSCSI, LVM, dmcrypt or even 'loop', are you > really sure this matters here? Do it and report your results. -- Stan