From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wols Lists Subject: Re: can't add a larger spare for a failed smaller disk Date: Sun, 25 Jun 2017 19:55:16 +0100 Message-ID: <59500714.5050407@youngman.org.uk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Hubert Reevez , Jeff Johnson , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 25/06/17 19:32, Hubert Reevez wrote: > All seems to went good, but data offset are not equal on sdc and sdg, > should I grow ? or something else ? thanks again > That's normal on an array to which "things have happened". If you grow or shrink or do other things which need to move data around, the operation moves the data to a new offset to avoid having to have a backup file. And it does this on a per-disk basis, so if you if you change the raid type, or you add a disk, or you do whole bunch of assorted operations, the data could end up shuffled back and forth all over the place. Bottom line - it's expected behaviour, don't worry. Have you read the raid wiki? I get the impression you're not that au fait with how raid works - a little bit of study might not go amiss :-) > > md0 : active raid6 sdf[0] sdg[6] sdb[4] sde[3] sda[2] sdc[7] > 5860548608 blocks super 1.2 level 6, 512k chunk, algorithm 2 [6/6] [UUUUUU] > > > mdadm -E : https://pastebin.com/hs7F5Ppi Cheers, Wol