From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: change from raid 5 to raid 6 interrupted Date: Fri, 22 Apr 2011 16:05:01 +0100 Message-ID: <4DB1991D.1090902@anonymous.org.uk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?Raphael_M=FCller?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 22/04/2011 15:49, Raphael M=FCller wrote: > last week i tried to grow my raid 5 with 4 disks to a raid 6 with 5 > disks. accidentialy i dropped the powersource and the resync process > stopped. > > i could start the nas with a rescue stick, but i still wasnt' able to > complete the resync. there are some output from different commands > (examine and assemble tries) > > i'm very confused, because there stands active sync, but raid 6 and i > think since it was very at the beginning, there was no data changed o= n > the 4 raid 5 disks. > > what should i do? and is it possible to rebuild this array? luckily i > have somewhere around 90% of the data backed up on another nas. The end of the assemble output has the answer: > mdadm:/dev/md1 has an active reshape - checking if critical section n= eeds to be restored > mdadm: Failed to find backup of critical section > mdadm: Failed to restore critical section for reshape, sorry. > Possibly you needed to specify the --backup-file You need to manually re-issue the assemble command, and specify the=20 --backup-file you gave when you started the --grow. That should get the= =20 array assembled and the reshape running again. Cheers, John. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html