From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stone Subject: Re: Brocken Raid & LUKS Date: Thu, 21 Feb 2013 20:29:42 +0100 Message-ID: <512675A6.1000801@heisl.org> References: <5123A1CC.2000003@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@turmel.org> <51265DA7.2030209@heisl.org> <512660B9.8090609@turm el.org> <5126629A.1090002@heisl.org> <51266360.9030402@turmel.org> <5126678D.9030101@heisl.org> <51266D73.5020700@turmel.org> <51267192.6090205@heisl.org> <51267467.9040603@turmel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <51267467.9040603@turmel.org> Sender: linux-raid-owner@vger.kernel.org To: Phil Turmel Cc: linux-raid List-Id: linux-raid.ids Am 21.02.2013 20:24, schrieb Phil Turmel: > On 02/21/2013 02:12 PM, Stone wrote: > >>>> ok. with --chunk=64 i cannot open the luks. >>>> in witch steps (chunk) should i continue? >>> That is a big surprise. The luks signature should not move with chunk >>> size. Please use "mdadm -E /dev/sdc1" to recheck your data offset. >>> >>> If that wasn't it, please show the hexdump for the entire luks >>> signature. I'd like to see its payload offset. >>> >>> Also, if you go back to --chunk=512, open the luks, you could run the >>> following command to find possible superblock locations: >>> >>> hexdump -C /dev/mapper/md2_nas |egrep '^[0-9a-f]+30 .+ 53 ef' >sb.lst >>> >>> (May take a long time to read the whole array) >>> >>> Phil >> with --chunk=512 i can open the luks but i cannot found a good superblock. >> yes i can run the hexdump but i think this runs 8 hours or longer. >> start the hexdump? >> can i try more today? > Run the hexdump for half an hour or so. If it doesn't find some > candidates in that timeframe, it probably won't. > > I've never crashed a luks partition like this, so I'm feeling around a > bit. You should understand that luks normally uses "cipher block > chaining" salted with the sector number. If you get the blocks out of > order (wrong chunk size or offset or layout), those sectors won't > decrypt correctly. luksOpen won't detect this. > > You may have to try many chunk sizes, verifying the data offset every > time, trying to find the one that will work. > > Phil ok i let the hexdump running for 30-60 min and then i check mehr chunk. if i can open the luks i should check again the superblocks? fsck.ext4 -n -b /dev/mapper/md2_nas ? but i see there is a result from hex: cat sb.lst 011e0830 17 0d bb 6e b2 37 9f f8 53 ef 5b 62 6d ab 0f b8 |...n.7..S.[bm...| 02a1c830 91 31 32 1a 35 c9 96 ab 53 ef 02 93 05 f2 b7 65 |.12.5...S......e| 03c48e30 dc 46 07 a9 2d ac 96 36 53 ef 61 48 d1 c7 63 05 |.F..-..6S.aH..c.| 04c28830 7f 36 db 0a 5a 65 6c 78 53 ef 3a 31 41 83 da c2 |.6..ZelxS.:1A...| 04c60830 9f 32 a6 e1 1a cc ef dc 53 ef 59 bd 51 ac d0 01 |.2......S.Y.Q...| 055be030 4b ee f1 d0 8e 36 15 67 53 ef 45 75 a9 cd 3c b5 |K....6.gS.Eu..<.| 058aa530 82 91 1f 13 6f fa 60 2f 53 ef 1a 68 80 bc a5 0c |....o.`/S..h....| 05def830 db fc 8d a1 f3 49 c9 a6 53 ef cf 03 f9 e3 18 00 |.....I..S.......| 06016630 5c 9b 31 ed 40 74 ad a5 53 ef c3 a8 b5 74 e2 25 |\.1.@t..S....t.%| 060caf30 b5 aa cd 06 57 d3 22 6c 53 ef 04 54 d6 2a 74 3f |....W."lS..T.*t?| 071f0530 cb 6b 07 74 60 37 e9 34 53 ef ba fa cf 2d 69 58 |.k.t`7.4S....-iX| 087f8c30 95 57 29 2c ca d8 02 0b 53 ef 05 c4 44 17 50 1c |.W),....S...D.P.| 0977ac30 32 61 7d 49 fc dc 61 a0 53 ef 53 95 96 88 25 65 |2a}I..a.S.S...%e| 0be5a330 3f 05 57 2e 8e fd 55 44 53 ef 20 0f f1 a0 5b a0 |?.W...UDS. ...[.| 0c5de030 65 2e 3a 18 44 b3 65 37 53 ef 24 f2 96 f9 99 dc |e.:.D.e7S.$.....| 0d3b8230 2f eb a0 08 d3 3e 32 70 53 ef 3b 5a 0c 7f c3 51 |/....>2pS.;Z...Q| 0d46b930 d6 e2 c5 23 61 8c b5 26 53 ef 71 3f f3 36 df f6 |...#a..&S.q?.6..| 0da68330 2a f2 24 fd df 4d 10 71 53 ef 8c b7 da fe 28 b3 |*.$..M.qS.....(.| 0dfb9730 cc 4a a3 7f 99 d0 9c 59 53 ef f6 78 c4 5e 7c fd |.J.....YS..x.^|.| 0e6be030 ae 13 5f 1a 79 e6 a1 33 53 ef 7f e3 07 ef 6e 38 |.._.y..3S.....n8| 0ee9e130 78 2a b9 8c 17 e8 0b b8 53 ef ad c8 d8 4b 3a 1d |x*......S....K:.| 0fe93130 f3 1f 02 69 6f f8 a9 f7 53 ef ee 2a 31 7f da f8 |...io...S..*1...| 128c7130 45 5b 93 6e 5f 64 26 3c 53 ef 6c 1e be d0 f1 9b |E[.n_d&...| 150ef030 1e 63 6d 93 c4 57 50 ac 53 ef 72 a4 62 98 9f f7 |.cm..WP.S.r.b...| 166ec830 ef 91 29 77 c3 a6 8a 61 53 ef 86 15 8f 2d a9 38 |..)w...aS....-.8| 16f96d30 1f 05 08 5a 64 df fa 09 53 ef b9 bc 21 85 c4 ff |...Zd...S...!...| 19c0b430 e4 a4 fd 26 10 90 ae 00 53 ef 3d b2 06 44 77 2a |...&....S.=..Dw*| 19c11d30 83 fd 70 6e 84 5e e9 42 53 ef b5 f2 34 02 e6 76 |..pn.^.BS...4..v| 1b13d030 9c 1d 5e 72 ff 07 04 0c 53 ef 80 6f eb 9d 68 33 |..^r....S..o..h3| 1b39f330 bf 1a 86 a0 43 fb c7 fd 53 ef 8f 55 7f 9f bf 46 |....C...S..U...F| 1c2a9c30 a0 8d 51 34 d0 f6 21 6f 53 ef f4 5a 1f a1 03 9f |..Q4..!oS..Z....| 1c8d1630 e9 f3 f3 4b 3e dc 13 cc 53 ef 4b 75 a9 1e fb 74 |...K>...S.Ku...t| 1e361d30 b8 c9 1a 14 16 c5 ba da 53 ef 22 fd 79 bd da 13 |........S.".y...| 1f628330 22 b7 78 3b 71 94 67 38 53 ef a7 1a 5d 1c 0c 11 |".x;q.g8S...]...| 21e76230 40 b9 f7 74 93 7a db 99 53 ef 67 fd 9a f2 38 4d |@..t.z..S.g...8M| 237eaf30 20 81 19 51 bc 80 2a 92 53 ef 02 c9 c0 6e a4 39 | ..Q..*.S....n.9| 27f80030 80 91 df 4d 0d 00 22 00 53 ef 00 00 01 00 00 00 |...M..".S.......| 2aa58330 c7 ba 01 74 ae 83 a9 5c 53 ef 33 50 73 b4 80 67 |...t...\S.3Ps..g| 2fe5fa30 65 e8 32 40 7d 63 ce d2 53 ef e3 14 29 4b bf eb |e.2@}c..S...)K..| 3021a330 c8 52 86 6a c4 83 4b 4f 53 ef f0 48 27 8c e4 6b |.R.j..KOS..H'..k| 30bf6e30 66 64 fb 7c 6d 67 e1 ef 53 ef 9d e4 88 ab 7c 28 |fd.|mg..S.....|(| 32d58f30 ce 79 84 2c 41 54 b7 c7 53 ef c7 c9 b8 7a a9 55 |.y.,AT..S....z.U| 3456cc30 63 55 26 a5 8d 2d e7 b5 53 ef 6e c2 15 ea 2c de |cU&..-..S.n...,.| 36108630 ba 36 3b 45 89 e4 f8 dd 53 ef fc 17 8f 8c 7d f6 |.6;E....S.....}.| 36c1fe30 36 0a 62 79 11 78 cd a3 53 ef 93 a3 ac 71 fe 2f |6.by.x..S....q./| 37601c30 f8 51 e8 5b 4b a9 33 df 53 ef e7 59 b7 15 d4 8e |.Q.[K.3.S..Y....| 37f80030 80 91 df 4d 0d 00 22 00 53 ef 00 00 01 00 00 00 |...M..".S.......| 3a0be530 c5 2a 5a 11 34 a3 5e 3d 53 ef d2 98 85 cb 9c 60 |.*Z.4.^=S......`| 3c7bcb30 a8 32 d6 84 10 24 a9 92 53 ef 53 ce c5 17 46 a1 |.2...$..S.S...F.| 3e763830 d0 2e e5 e4 5d 12 50 ff 53 ef 2a 3f 54 89 66 b9 |....].P.S.*?T.f.| 40eb1830 82 45 f5 29 50 11 40 27 53 ef 81 97 c0 d2 40 09 |.E.)P.@'S.....@.| 42d6bb30 9f 97 47 d4 27 d1 0a 5b 53 ef 5d 98 12 20 2e 79 |..G.'..[S.].. .y| 44dc8b30 50 57 55 89 43 04 e8 95 53 ef ff 8b 43 04 8d 14 |PWU.C...S...C...| 4af7d430 54 67 6d 65 f2 54 4c e4 53 ef 42 8a 57 73 f2 7b |Tgme.TL.S.B.Ws.{| 4b49b130 f4 d6 92 45 61 fa f4 c5 53 ef be 9d 89 f5 cd 99 |...Ea...S.......| 4b4d6230 ae 93 05 cc 3c 7d fe 6e 53 ef 66 10 ff 30 b9 24 |....<}.nS.f..0.$| 4bd02830 35 5c 44 a7 4e 15 b5 87 53 ef 7b 3f 9b 75 6d ab |5\D.N...S.{?.um.| 4cf5ad30 08 fc 34 b1 00 1e e0 af 53 ef 8b 7b 18 99 73 1a |..4.....S..{..s.| 4d31e130 e8 d9 ef 6a a2 ba d6 d5 53 ef f5 92 f2 55 4c ca |...j....S....UL.| 4e887930 7b a0 ce fa fe 6d ad a1 53 ef 3a b5 5f f0 07 da |{....m..S.:._...| 50687b30 7b 98 1c d3 49 59 e4 ca 53 ef 46 69 0b 3e ee c3 |{...IY..S.Fi.>..| 5083e630 53 8c 5e 60 0e 93 e3 94 53 ef d6 e0 85 06 26 d1 |S.^`....S.....&.| 50dd0b30 f4 8d 43 b9 91 74 a6 de 53 ef c9 a7 d6 79 d6 e5 |..C..t..S....y..| 50efa530 2d af 75 74 96 f0 29 f7 53 ef 5f 40 94 9d d7 31 |-.ut..).S._@...1| 519ed830 4b 5b 76 50 fb 5a e7 f8 53 ef 79 ad 17 0c 41 d7 |K[vP.Z..S.y...A.| 52968e30 16 27 4a af 10 70 b9 a7 53 ef fc 76 4d e1 a5 d3 |.'J..p..S..vM...| 53df7430 4a 34 16 33 78 40 16 07 53 ef 87 80 14 ad 03 be |J4.3x@..S.......| 545b3e30 38 d4 7c f7 52 62 0d a4 53 ef 9e 0d f4 f8 3e 4c |8.|.Rb..S.....>L| 550dda30 4e 80 ee c9 75 5a bd 8d 53 ef c5 1d 9e 51 ad 70 |N...uZ..S....Q.p| 55afb530 a9 de 66 d9 a6 ee 35 a8 53 ef 36 61 69 c1 6a c4 |..f...5.S.6ai.j.| 55baf430 ad 20 92 a6 f7 f1 fb 43 53 ef 10 03 07 9e ba 38 |. .....CS......8| 55ca7c30 9c 00 6c 6a 69 29 ae cc 53 ef a0 6e 2e 2c 48 67 |..lji)..S..n.,Hg| 56203730 6d ef f0 ae 12 61 9e 7f 53 ef e6 cf 79 a9 e6 a2 |m....a..S...y...| 567d3030 37 83 4d f6 fa 79 2d f1 53 ef b4 19 dc 31 41 ee |7.M..y-.S....1A.| 5939bf30 91 7f f7 ed 44 4b f1 f9 53 ef fc f3 44 fd 7f 65 |....DK..S...D..e| 5a600030 39 3b 64 91 2a 62 4f 62 53 ef 54 e2 0b 9f 77 04 |9;d.*bObS.T...w.| 5bffaa30 54 6d 0f 30 16 20 71 88 53 ef 72 2a 89 bb e9 d8 |Tm.0. q.S.r*....| 5cd40e30 60 dc 99 6c d2 f7 4e da 53 ef 27 7f 15 e1 6a 6b |`..l..N.S.'...jk| 5ce11c30 5d 97 d8 49 a9 c8 ea bc 53 ef c1 ac b2 5c 3c 58 |]..I....S....\xU.v.UQS.+!y.u.| 6b166730 07 db 8d 18 b8 69 cc 22 53 ef 2b 4f dd df b8 56 |.....i."S.+O...V| 6b82f830 61 45 5f 5a bf cb 25 10 53 ef b9 e3 11 2a e4 a5 |aE_Z..%.S....*..| 6c3f3d30 d3 a4 cc a5 fd bd d4 dd 53 ef 5e eb 26 ff 39 6e |........S.^.&.9n| 6cd42f30 4f c5 1f 2b 13 3a 19 b8 53 ef 67 59 70 1b 11 65 |O..+.:..S.gYp..e| 6d40f130 76 99 1f 14 1a 8a 33 58 53 ef c0 3b de 8e 97 0f |v.....3XS..;....| 6d6cbb30 82 6a 37 4b 34 59 64 1c 53 ef 64 c2 29 88 50 31 |.j7K4Yd.S.d.).P1| 6e606730 dc 4d 43 71 ff 2b 71 68 53 ef 9d 41 16 0f 91 10 |.MCq.+qhS..A....| 6e909e30 96 0c 7c be 2a f3 a4 e9 53 ef fc 00 20 2f 32 32 |..|.*...S... /22| 72d0df30 1b b5 d0 79 e3 33 76 22 53 ef 4e d9 14 3b 17 93 |...y.3v"S.N..;..| 74a44b30 03 87 a4 b2 3a 73 22 03 53 ef 54 6b 4d ed 9d a8 |....:s".S.TkM...| 7582bc30 2d 50 cb 49 10 c8 c8 4e 53 ef 04 79 4a 8a d1 9c |-P.I...NS..yJ...| 7599fa30 1a 25 29 c3 32 6c 30 55 53 ef 99 cf 29 20 e5 81 |.%).2l0US...) ..| 76a0ed30 86 4f 8d 18 da fc af f1 53 ef c3 c1 93 c4 a5 fa |.O......S.......| 76b63f30 e1 9d e8 e4 0b 1e 14 80 53 ef 11 99 e7 58 37 b9 |........S....X7.| 79eec330 a2 5e 93 f9 db f3 f1 85 53 ef bf fd 36 13 b1