[dm-crypt] "not a valid LUKS device" after distro change

John Wells jbwellsiv at gmail.com
Wed Aug 20 18:18:33 CEST 2014


Thanks Arno.

Something definitely looks amiss:
$ sudo   head -c 1024 /dev/FINALFRONTIER_VG/HOME_LV | hd
00000000  47 4e 55 20 50 61 72 74  65 64 20 4c 6f 6f 70 62  |GNU Parted
Loopb|
00000010  61 63 6b 20 30 00 00 00  00 00 00 00 00 00 00 00  |ack
0...........|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
*
00000400

$ sudo head -c 1024 /dev/MORE_VG/MORE_LV  | hd
                                                                         ��ޭ
00000000  4c 55 4b 53 ba be 00 01  61 65 73 00 00 00 00 00
 |LUKS....aes.....|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000020  00 00 00 00 00 00 00 00  78 74 73 2d 70 6c 61 69
 |........xts-plai|
00000030  6e 36 34 00 00 00 00 00  00 00 00 00 00 00 00 00
 |n64.............|
00000040  00 00 00 00 00 00 00 00  73 68 61 31 00 00 00 00
 |........sha1....|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000060  00 00 00 00 00 00 00 00  00 00 10 00 00 00 00 40
 |...............@|
00000070  4e 94 98 c0 51 a9 25 bb  74 73 88 a4 a7 6e c7 d3
 |N...Q.%.ts...n..|
00000080  6f 18 71 fa 94 9a f4 5e  d1 e8 5b 1a 34 3a 9f 9f
 |o.q....^..[.4:..|
00000090  1d 79 1f 61 f5 dd 98 09  e1 d6 2e ed c4 29 af 1a
 |.y.a.........)..|
000000a0  23 c9 59 da 00 00 77 a1  36 63 63 31 38 38 64 62
 |#.Y...w.6cc188db|
000000b0  2d 63 63 64 62 2d 34 63  38 66 2d 39 37 62 32 2d
 |-ccdb-4c8f-97b2-|
000000c0  65 34 31 31 39 38 65 63  36 65 34 34 00 00 00 00
 |e41198ec6e44....|
000000d0  00 ac 71 f3 00 01 df d7  79 85 dd f0 29 59 98 63
 |..q.....y...)Y.c|
000000e0  0b 69 80 fe 48 61 8c 40  5b 3b 57 0f 82 9c ae 90  |.i..Ha.@
[;W.....|
000000f0  36 57 45 e2 03 82 26 c5  00 00 00 08 00 00 0f a0
 |6WE...&.........|
00000100  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000110  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000120  00 00 00 00 00 00 00 00  00 00 02 00 00 00 0f a0
 |................|
00000130  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000140  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000150  00 00 00 00 00 00 00 00  00 00 03 f8 00 00 0f a0
 |................|
00000160  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000170  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000180  00 00 00 00 00 00 00 00  00 00 05 f0 00 00 0f a0
 |................|
00000190  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
000001b0  00 00 00 00 00 00 00 00  00 00 07 e8 00 00 0f a0
 |................|
000001c0  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
000001e0  00 00 00 00 00 00 00 00  00 00 09 e0 00 00 0f a0
 |................|
000001f0  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000210  00 00 00 00 00 00 00 00  00 00 0b d8 00 00 0f a0
 |................|
00000220  00 00 de ad 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000230  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
00000240  00 00 00 00 00 00 00 00  00 00 0d d0 00 00 0f a0
 |................|
00000250  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|

Yes, even though Fedora 20 will mount neither volume, Ubuntu 14.04 will
mount the /dev/MORE_VG/MORE_LV partition.

Thanks,
John


On Wed, Aug 20, 2014 at 5:09 AM, Arno Wagner <arno at wagner.name> wrote:

> On Wed, Aug 20, 2014 at 00:22:29 CEST, John Wells wrote:
> > Thanks for your response. This is the result of luksDump on the
> container:
> >
> > # cryptsetup luksDump /dev/FINALFRONTIER_VG/HOME_LV
> > Device /dev/FINALFRONTIER_VG/HOME_LV is not a valid LUKS device.
>
> Ah, sorry. Did not see that access completely failed.
> That means the header was at least partially overwritten.
>
> Can you post or send me a hex-dump of the first 1024 bytes
> of this device and the other one?
>
> Command to do so is, e.g.
>
>   head -c 1024 /dev/FINALFRONTIER_VG/HOME_LV | hd
>
> This will not compromise your security.
>
> > I will try to find the time to recreate the entire scenario. Do you think
> > the current container I'm able to open is at risk of corruption as well?
>
> Yes. Something seems to be running amok.
>
> Another queston: After Fedora 20 told you both were not
> valid LUKS devices, could you still open the one in Ubuntu
> that you could open before?
>
> Arno
>
> --
> Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno at wagner.name
> GnuPG: ID: CB5D9718  FP: 12D6 C03B 1B30 33BB 13CF  B774 E35C 5FA1 CB5D 9718
> ----
> A good decision is based on knowledge and not on numbers. -  Plato
> _______________________________________________
> dm-crypt mailing list
> dm-crypt at saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.saout.de/pipermail/dm-crypt/attachments/20140820/9b92fc4a/attachment.html>


More information about the dm-crypt mailing list