From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wols Lists Subject: Re: Superblock Missing Date: Mon, 4 Sep 2017 16:02:08 +0100 Message-ID: <59AD6AF0.8030506@youngman.org.uk> References: <20170902014333.GA26507@metamorpher.de> <20170902164906.GA6823@metamorpher.de> 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: David Mitchell , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 04/09/17 04:35, David Mitchell wrote: > mdadm --stop /dev/md0 > mdadm --assemble --force /dev/md0 /dev/sdc1 /dev/sdd1 /dev/sde1 > > The array instantly loaded and went into a sync. I let the sync > complete overnight. The file system on the raid array seems to be > gone. > > I'm looking for any hints on how I might get it back. > > The array loads fine, but when I attempted to mount the array, it > complains about not finding the file system OoWwww! I think you've just trashed one of the drives :-( The sync will have overwritten one of the drives with parity calculated from the other two. You've got two drives of valid data from a 3-drive raid-5 set, so the data could be recovered, but it's going to be a long job. Somebody else is going to have to chime in and tell you what to do, but now is the time you really want your backup :-( Cheers, Wol