From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Smith Subject: Re: RAID10 reshape and change lout possible? Date: Sun, 26 Feb 2017 18:51:47 +0000 Message-ID: <20170226185147.GD21587@bitfolk.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hello, On Sun, Feb 26, 2017 at 03:37:24PM +0100, Reindl Harald wrote: > is it somehow possible to change a existing md RAID10 array from "2 > near-copies" to "2 far-copies" and what would be the mdadm syntax? https://manpages.debian.org/jessie/mdadm/mdadm.8.en.html suggests that --grow --layout can be changed on RAID-10. I have never tried it myself. Experiment with loop devices. It looks like the syntax would be: # mdadm --grow /dev/mdX --layout=f2 Cheers, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting > The optimum programming team size is 1. Has Jurassic Park taught us nothing? — pfilandr