From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gionatan Danti Subject: Re: RAID 10 far and offset on-disk layouts Date: Fri, 27 Dec 2013 16:22:55 +0100 Message-ID: <52BD9B4F.3000509@assyoma.it> References: <52BD8EDD.10809@assyoma.it> <20131227151927.GA4003@www5.open-std.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20131227151927.GA4003@www5.open-std.org> Sender: linux-raid-owner@vger.kernel.org To: keld@keldix.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids > On Fri, Dec 27, 2013 at 03:29:49PM +0100, Gionatan Danti wrote: > The wikipedia description is what you get for new arrays with newer > kernels, while the suse documentation is what you will get with older kernels. > The wikipedia layout was made because there are better chances of recovery, > Chances went from 1/3 to 2/3 with eg 4 drives, when 2 drives were failing. > > I would say that the Suse description is just not updated. > > Best regards > Keld > Interesting. Two question: 1) from which kernel the layout is the one depicted by Wikipedia? 2) it is possible, using mdadm, check what "far" layout is in use? Thanks. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8