From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nix Subject: Re: Linear device of two arrays Date: Fri, 07 Jul 2017 12:07:35 +0100 Message-ID: <8737a8o688.fsf@esperi.org.uk> References: <20170705214250.0ea99538@natsu> <595D2ADA.8010907@youngman.org.uk> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <595D2ADA.8010907@youngman.org.uk> (Wols Lists's message of "Wed, 5 Jul 2017 19:07:22 +0100") Sender: linux-raid-owner@vger.kernel.org To: Wols Lists Cc: Roman Mamedov , Veljko , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 5 Jul 2017, Wols Lists spake thusly: > My feeling was, if you can't just add drives to the existing raid 10, > create a new one which you can expand, migrate the fs across (btrfs > would let you do that live, I believe, so xfs probably can too), then > you can scrap the old raid-10 and add the drives into the new one. In extremis you can always connect multiple block devices into one, or indeed multiple *pieces* of them into one, using dmsetup with the linear table. (However, this is not persistent, so you'd need to script redoing it on every boot.) -- NULL && (void)