From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: Brocken Raid & LUKS Date: Thu, 21 Feb 2013 13:11:44 -0500 Message-ID: <51266360.9030402@turmel.org> References: <5123A1CC.2000003@heisl.org> <5123BD1F.4060200@turmel.org> <5123E4E9.3020609@heisl.org> <5123EB92.5090505@turmel.org> <5123EF45.6080405@heisl.org> <5123F7C7.7000406@turmel.org> <5123FB71.3060509@heisl.org> <5124196F.6090000@turmel.org> <512516C2.3010105@heisl.org> <5125184A.6040707@turmel.org> <5125C6E9.4050802@heisl.org> <5125EBFD.3050802@heisl.org> <51262137.3040609@turmel.org> <51262CE0.3000809@heisl.org> <51263785.2010001@turmel.org> <51263D9D.1080002@heisl.org> <51263F7E.7040207@turmel.org> <5126421E.3040702@turmel.org> <51264C18.8000201@heisl.org> <51264E26.9050100@turmel.org> <51264EBF.9090000@heisl.org> <51264F7F.3020508@turmel.org> <512650A1.7070103@heisl.org> <51265132.7070706@turmel.org> <512656B5.4090505@heisl.org> <51265824.4030407@heisl.org> <51265B0B.9020108@turm el.org> <51265DA7.2030209@heisl.org> <512660B9.8090609@turmel.org> <5126629A.1090002@heisl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5126629A.1090002@heisl.org> Sender: linux-raid-owner@vger.kernel.org To: Stone Cc: linux-raid List-Id: linux-raid.ids On 02/21/2013 01:08 PM, Stone wrote: > ok i have checked all superblocks but i get always the same message. > here one sample: > fsck.ext4 -n -b 644972544 /dev/mapper/md2_nas > e2fsck 1.41.14 (22-Dec-2010) > fsck.ext4: Invalid argument while trying to open /dev/mapper/md2_nas > > The superblock could not be read or does not describe a correct ext2 > filesystem. If the device is valid and it really contains an ext2 > filesystem (and not swap or ufs or something else), then the superblock > is corrupt, and you might try running e2fsck with an alternate superblock: > e2fsck -b 8193 You very likely have the wrong chunk size. Close luks, stop md2, and re-create with --chunk=64 And then try to fsck again. (Without -b at first.) Phil