From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8498EC433FE for ; Sun, 8 May 2022 15:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234936AbiEHPgJ (ORCPT ); Sun, 8 May 2022 11:36:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234013AbiEHPgI (ORCPT ); Sun, 8 May 2022 11:36:08 -0400 Received: from smtp.hosts.co.uk (smtp.hosts.co.uk [85.233.160.19]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15F7810FEF for ; Sun, 8 May 2022 08:32:16 -0700 (PDT) Received: from host86-155-180-61.range86-155.btcentralplus.com ([86.155.180.61] helo=[192.168.1.218]) by smtp.hosts.co.uk with esmtpa (Exim) (envelope-from ) id 1nnitK-0002Nb-6s; Sun, 08 May 2022 16:32:14 +0100 Message-ID: Date: Sun, 8 May 2022 16:32:13 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: Failed adadm RAID array after aborted Grown operation Content-Language: en-GB To: Bob Brand , linux-raid@vger.kernel.org References: <00ae01d862de$1d336980$579a3c80$@wmawater.com.au> From: Wols Lists Cc: Phil Turmel In-Reply-To: <00ae01d862de$1d336980$579a3c80$@wmawater.com.au> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org On 08/05/2022 14:18, Bob Brand wrote: > If you’ve stuck with me and read all this way, thank you and I hope you > can help me. https://raid.wiki.kernel.org/index.php/Linux_Raid Especially https://raid.wiki.kernel.org/index.php/Linux_Raid#When_Things_Go_Wrogn What you need to do is revert the reshape. I know what may have happened, and what bothers me is your kernel version, 3.10. The first thing to try is to boot from up-to-date rescue media and see if an mdadm --revert works from there. If it does, your Centos should then bring everything back no problem. (You've currently got what I call a Frankensetup, a very old kernel, a pretty new mdadm, and a whole bunch of patches that does who knows what. You really need a matching kernel and mdadm, and your frankenkernel won't match anything ...) Let us know how that goes ... Cheers, Wol