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 <superblock> /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&<S.l.....|
12ad4430 94 c0 9b e8 ff 6a 6e 63 53 ef 2d d3 95 f9 3a 64
|.....jncS.-...:d|
13c76d30 ac 31 88 2b 08 ba 34 6b 53 ef 46 c3 3e 9b c5 05
|.1.+..4kS.F.>...|
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....\<X|
5d8f6d30 c3 bc 16 0b 85 f8 89 37 53 ef 60 be 22 23 95 01
|.......7S.`."#..|
5e3b9630 4b 49 18 a9 32 b5 c7 2b 53 ef 0e 43 e3 d3 7f 1c
|KI..2..+S..C....|
5e950430 f2 f7 b9 3b 9c 1f 8b 69 53 ef af d6 c2 31 6b 0e
|...;...iS....1k.|
5ea3e030 66 2e f7 40 61 41 50 de 53 ef 56 01 9a 21 a0 33
|f..@aAP.S.V..!.3|
5f638d30 42 b1 ec 8a cc 57 8b c9 53 ef df 41 d5 9d 9d 6d
|B....W..S..A...m|
6a241830 16 e8 c4 39 bb 50 96 f8 53 ef 60 62 90 e6 4e b3
|...9.P..S.`b..N.|
6a249f30 17 d6 77 d3 62 b2 c3 83 53 ef b4 9d ff d7 07 15
|..w.b...S.......|
6a8e6230 3e 78 55 da 76 e1 55 51 53 ef 2b 21 79 fc 75 cd
|>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
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