Hello i have following Problem.
Unfortunately through a power loss all superblocks of my RAID were
destroyed.
My setup
8 x 1TB in a RAID 6
3 x 2TB in a RAID 5
The crucial data are on both of these arrays.
After googling a while i recognized that several users encountered that
problem.
Most of them were able to restore their arrays by creating the array
again with excatly the same parameters mdadm --create .....
i tried that with the 3 x 2TB Array. Unfortunately after that
cryptsetup luksOpen tels me "md5 is no valid luks device". Then I had
a look on the fist bytes of the array. Unfortunately it dose seem to be
crap and no luks header. I unfortunately do not have a luks-header
backup of this array. I do have a backup of the luks header of the 8 x
1 TB array. Bevore i Try the same with the 8 x 1 TB Array i would like
to make deadly sure there are no other options.
Maby someone can Help me
Here some information that might be helpful:
Hexdump of the 3x 2TB Array
00000000 30 af 62 61 58 4f 88 1a a4 d2 2f ed d6 c0 98 c3
|0.baXO..../.....|
00000010 1d 46 54 5f 12 38 d1 db b5 56 77 42 fb 2d df db
|.FT_.8...VwB.-..|
00000020 88 6c 45 8d 2e 0c e8 39 62 88 2c b7 d1 c7 84 eb
|.lE....9b.,.....|
00000030 90 25 b6 3f 0d 4c 2b 9a 38 ee 27 5a 4a 6b 75 1a
|.%.?.L+.8.'ZJku.|
00000040 34 c3 58 fb 24 d1 b5 c8 ee ee ee 96 88 9a 41 c3
|4.X.$.........A.|
00000050 c8 ab c1 27 3f 78 5c 06 8b 1c cc 1b f1 95 5c ba
|...'?x\.......\.|
00000060 8c ce 11 e8 ba e0 8c 90 ca 5e 41 a0 d3 de 3c 4d
|.........^A...<M|
00000070 4c 5d 0d 4f cc ab 06 f1 89 d2 06 04 60 29 90 da
|L].O........`)..|
00000080 3d 38 50 e6 72 81 8b 18 89 92 8b 22 90 e4 e6 3c
|=8P.r......"...<|
00000090 dd 66 23 8f f1 08 94 38 34 20 98 3f a9 16 9f 22 |.f#....84
.?..."|
000000a0 a8 93 10 03 8f 6b 33 47 4e 31 e7 e9 e5 c3 85 87
|.....k3GN1......|
000000b0 70 76 2b 68 e0 29 31 34 ee b2 e6 d9 5b be c7 96
|pv+h.)14....[...|
000000c0 9d 2b 33 c1 7f 96 0b 7f f8 7e 05 0e 85 51 de ce
|.+3......~...Q..|
000000d0 e7 08 3e c4 c0 0e bc 43 05 74 41 ff e3 af e0 ab
|..>....C.tA.....|
000000e0 7d ce 5a 3d dd 88 d6 bb b1 88 fa 85 bd 65 73 57
|}.Z=.........esW|
000000f0 f7 7c 8d 5e 37 9a 69 10 2e 30 84 a7 c6 21 72 2c
|.|.^7.i..0...!r,|
00000100 51 46 80 31 79 c2 0a ec 08 04 12 a7 a6 7b 4d 3e
|QF.1y........{M>|
00000110 b3 bc f7 db 20 f8 ad b6 58 c8 52 23 b9 3d 96 de |....
...X.R#.=..|
00000120 6c 6d c2 2a 8a 5d ec 3c 7c 8b d5 4f ca b8 75 5f
|lm.*.].<|..O..u_|
00000130 ef b1 2c 55 cb 6a c5 f9 2f fa e9 18 fa 42 7f 32
|..,U.j../....B.2|
00000140 ed e7 4a 40 71 67 c3 30 b3 e8 a0 a4 4f 46 98 59
|..J@xxxxxxxxxx.Y|
00000150 43 50 74 f1 b5 42 e9 bd 90 57 59 67 fc 77 e0 d6
|CPt..B...WYg.w..|
00000160 6e c5 40 56 9f 06 4d d0 e8 32 b3 2c 73 ec a1 db
|n.@V..M..2.,s...|
00000170 cd d7 80 31 01 04 b2 ac 4e 3e fa ee cf a2 6a df
|...1....N>....j.|
00000180 8f 74 e3 4f 8f 4a 08 8f df 75 fe 0b 35 d9 73 32
|.t.O.J...u..5.s2|
00000190 37 e7 d2 71 95 b6 c4 43 f5 db cd 09 d1 ab 12 02
|7..q...C........|
000001a0 bd 8f 8e 2d b0 71 6a b8 ba cf d4 44 7c 0a 34 13
|...-.qj....D|.4.|
000001b0 ee 1f ec e1 c1 46 14 2c 66 94 a0 a5 7e a4 fe 0a
|.....F.,f...~...|
000001c0 d7 9e 0d 9c 40 a6 57 49 f4 a0 4b b0 79 87 0b 03
|....@.WI..K.y...|
000001d0 29 34 cc 79 1d 42 60 93 bc d0 e2 8d a3 20 f1 28
|)4.y.B`...... .(|
000001e0 56 3d a8 a1 43 c4 fc b7 e6 8e 2c 07 f4 d3 73 01
|V=..C.....,...s.|
000001f0 c4 49 1a 08 10 ac 25 0e 31 91 d2 a7 3e 85 f6 be
|.I....%.1...>...|
00000200 cb e8 5f ec 1c 69 23 92 c3 84 43 aa 38 58 25 ef
|.._..i#...C.8X%.|
00000210 19 90 e9 86 7a ab 47 62 f9 7b 1a 2e 09 9f 70 f5
|....z.Gb.{....p.|
00000220 0a 67 9f d2 01 db ce 07 40 86 7c c4 7e cf 61 7f
|.g......@.|.~.a.|
00000230 0e df a7 44 61 dc c5 56 f7 e1 14 8c 01 8e a8 0d
|...Da..V........|
00000240 eb 5b 35 70 45 16 60 be 85 ce 57 9a 09 b1 82 fd
|.[5pE.`...W.....|
00000250 9d 59 41 00 79 fd c0 3e e5 18 18 4f 33 9c ee 22
|.YA.y..>...O3.."|
00000260 f4 2b ff 06 b2 fe 9c 0a 88 01 e6 a4 fd d5 35 01
|.+............5.|
00000270 3e dd 31 84 55 5d 71 9b 73 57 94 46 72 7d c9 c0
|>.1.U]q.sW.Fr}..|
mdadm -D /dev/md5
/dev/md5:
Version : 1.2
Creation Time : Sat May 5 01:30:36 2012
Raid Level : raid5
Array Size : 3907021568 (3726.03 GiB 4000.79 GB)
Used Dev Size : 1953510784 (1863.01 GiB 2000.40 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent
Update Time : Sun May 6 07:16:52 2012
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 128K
Name : stonith:5 (local to host stonith)
UUID : ea42de9b:87279279:b278cefd:4686698b
Events : 21
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 49 1 active sync /dev/sdd1
3 8 65 2 active sync /dev/sde1
mdadm -E all devices
/dev/sdb:
MBR Magic : aa55
Partition[0] : 3907024002 sectors at 63 (type fd)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ea42de9b:87279279:b278cefd:4686698b
Name : stonith:5 (local to host stonith)
Creation Time : Sat May 5 01:30:36 2012
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 7814043136 (3726.03 GiB 4000.79 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 38cca227:a2b01df0:a4f71bd4:26fc69ab
Update Time : Sun May 6 07:16:52 2012
Checksum : f843636c - correct
Events : 21
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 0
Array State : AAA ('A' == active, '.' == missing)
/dev/sdc:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type fd)
/dev/sdc1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 22:21:42 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 5
Preferred Minor : 0
Update Time : Thu May 3 22:24:06 2012
State : active
Active Devices : 0
Working Devices : 5
Failed Devices : 0
Spare Devices : 5
Checksum : 829a0f47 - correct
Events : 1
Number Major Minor RaidDevice State
this 4 8 97 4 spare /dev/sdg1
0 0 8 177 0 spare /dev/sdl1
1 1 8 161 1 spare /dev/sdk1
2 2 8 145 2 spare
3 3 8 113 3 spare /dev/sdh1
4 4 8 97 4 spare /dev/sdg1
/dev/sdd:
MBR Magic : aa55
Partition[0] : 3907024002 sectors at 63 (type fd)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ea42de9b:87279279:b278cefd:4686698b
Name : stonith:5 (local to host stonith)
Creation Time : Sat May 5 01:30:36 2012
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 7814043136 (3726.03 GiB 4000.79 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : ddc9eea2:7ecb67cf:ecd45f8f:8171667b
Update Time : Sun May 6 07:16:52 2012
Checksum : de19ce91 - correct
Events : 21
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 1
Array State : AAA ('A' == active, '.' == missing)
/dev/sde:
MBR Magic : aa55
Partition[0] : 3907024002 sectors at 63 (type fd)
/dev/sde1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ea42de9b:87279279:b278cefd:4686698b
Name : stonith:5 (local to host stonith)
Creation Time : Sat May 5 01:30:36 2012
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 7814043136 (3726.03 GiB 4000.79 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 0e9d2be3:ab0c2188:e353ac39:f62f8178
Update Time : Sun May 6 07:16:52 2012
Checksum : 7e77205d - correct
Events : 21
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 2
Array State : AAA ('A' == active, '.' == missing)
/dev/sdf:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type fd)
/dev/sdf1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 22:21:42 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 5
Preferred Minor : 0
Update Time : Thu May 3 22:24:06 2012
State : active
Active Devices : 0
Working Devices : 5
Failed Devices : 0
Spare Devices : 5
Checksum : 829a0f73 - correct
Events : 1
Number Major Minor RaidDevice State
this 2 8 145 2 spare
0 0 8 177 0 spare /dev/sdl1
1 1 8 161 1 spare /dev/sdk1
2 2 8 145 2 spare
3 3 8 113 3 spare /dev/sdh1
4 4 8 97 4 spare /dev/sdg1
/dev/sdg:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type fd)
/dev/sdg1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 22:21:42 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 5
Preferred Minor : 0
Update Time : Thu May 3 22:24:06 2012
State : active
Active Devices : 0
Working Devices : 5
Failed Devices : 0
Spare Devices : 5
Checksum : 829a0f81 - correct
Events : 1
Number Major Minor RaidDevice State
this 1 8 161 1 spare /dev/sdk1
0 0 8 177 0 spare /dev/sdl1
1 1 8 161 1 spare /dev/sdk1
2 2 8 145 2 spare
3 3 8 113 3 spare /dev/sdh1
4 4 8 97 4 spare /dev/sdg1
/dev/sdh:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type 83)
/dev/sdh1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 22:21:42 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 5
Preferred Minor : 0
Update Time : Thu May 3 22:24:06 2012
State : active
Active Devices : 0
Working Devices : 5
Failed Devices : 0
Spare Devices : 5
Checksum : 829a0f55 - correct
Events : 1
Number Major Minor RaidDevice State
this 3 8 113 3 spare /dev/sdh1
0 0 8 177 0 spare /dev/sdl1
1 1 8 161 1 spare /dev/sdk1
2 2 8 145 2 spare
3 3 8 113 3 spare /dev/sdh1
4 4 8 97 4 spare /dev/sdg1
/dev/sdi:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type fd)
/dev/sdi1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 22:21:42 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 5
Preferred Minor : 0
Update Time : Thu May 3 22:24:06 2012
State : active
Active Devices : 0
Working Devices : 5
Failed Devices : 0
Spare Devices : 5
Checksum : 829a0f8f - correct
Events : 1
Number Major Minor RaidDevice State
this 0 8 177 0 spare /dev/sdl1
0 0 8 177 0 spare /dev/sdl1
1 1 8 161 1 spare /dev/sdk1
2 2 8 145 2 spare
3 3 8 113 3 spare /dev/sdh1
4 4 8 97 4 spare /dev/sdg1
/dev/sdk:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type 83)
/dev/sdk1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 20:50:05 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 1
Preferred Minor : 0
Update Time : Thu May 3 20:51:28 2012
State : active
Active Devices : 0
Working Devices : 1
Failed Devices : 0
Spare Devices : 1
Checksum : 8299e0fc - correct
Events : 1
Number Major Minor RaidDevice State
this 0 8 33 0 spare /dev/sdc1
0 0 8 33 0 spare /dev/sdc1
/dev/sdl:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type 83)
/dev/sdl1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 20:09:44 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 2
Preferred Minor : 0
Update Time : Thu May 3 20:10:29 2012
State : active
Active Devices : 0
Working Devices : 2
Failed Devices : 0
Spare Devices : 2
Checksum : 8299cdfc - correct
Events : 1
Number Major Minor RaidDevice State
this 1 8 17 1 spare /dev/sdb1
0 0 8 33 0 spare /dev/sdc1
1 1 8 17 1 spare /dev/sdb1
/dev/sdm:
MBR Magic : aa55
Partition[0] : 1953520002 sectors at 63 (type fd)
/dev/sdm1:
Magic : a92b4efc
Version : 0.90.00
UUID : 00000000:00000000:00000000:00000000
Creation Time : Thu May 3 20:09:44 2012
Raid Level : -unknown-
Raid Devices : 0
Total Devices : 2
Preferred Minor : 0
Update Time : Thu May 3 20:10:29 2012
State : active
Active Devices : 0
Working Devices : 2
Failed Devices : 0
Spare Devices : 2
Checksum : 8299ce0a - correct
Events : 1
Number Major Minor RaidDevice State
this 0 8 33 0 spare /dev/sdc1
0 0 8 33 0 spare /dev/sdc1
1 1 8 17 1 spare /dev/sdb1
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