From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wols Lists Subject: Re: Unable to convert raid1 to raid5 Date: Sun, 7 Aug 2016 00:59:05 +0100 Message-ID: <57A679C9.3060204@youngman.org.uk> References: <57A4F436.9080402@youngman.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <57A4F436.9080402@youngman.org.uk> Sender: linux-raid-owner@vger.kernel.org To: linux-raid List-Id: linux-raid.ids On 05/08/16 21:16, Wols Lists wrote: > In my testing of xosview, I've been mucking about with a vm and raid. > xosview is looking quite promising (I've got a few comments about it, > but never mind). > > BUT. In mucking about with raid 1, I increased my raid devices to three. > I now just can NOT convert the array to raid 5! I've been mucking around > with all sorts of things trying to get it to work, but finally two error > messages make things clear. > Following up to myself - suddenly thought "I know what's wrong". So I stopped the array, and of course couldn't access it, it was no longer there. So I assembled but didn't run it, and it worked fine. Simples, once you realise what's wrong - you can ADD devices to a running array, but you can't REMOVE them. Cheers, Wol