Hi John, while I have no idea how HOME_LV got in this state, the hexdump shows what is wrong. I suspect some LVM or Parted "Magic" on installation caused this. As the salts in the header are critical for decryption, unless the LUKS header is somewhere else and the offsets are wrong (i.e. you are not looking at the place you are think you are looking at, e.g. due to some LVM problem) the data is gone. As to MORE_LV, this should work. I suspect you did the dump below on Ubuntu, correct? I think Ubuntu may have screwed up the partitioning so that Fedora 20 does not find MORE_LV anymore, but Ubuntu finds it. One more test would show this: Copy the first 10MB of MORE_LV on *Ubuntu* head -c 10M /dev/MORE_VG/MORE_LV >> header.dump do a loopback mount of it it on *Fedora 20* losetup /dev/loop0 header.dump and then try to luksOpen /dev/loop0. If that works on Fedora 20 but MORE_LV does not work on FEDORA 20, then this is a problem with Fedora 20 having dome issue accessing the raw MORE_LV partition. Note that header.dump will contain the key-slots, so make sure you can secure-erase the header.dump-file again! (You are still secure, but your passphrase is in there and if that becomes compromised, changing it will not be enough.) Arno On Wed, Aug 20, 2014 at 18:18:33 CEST, John Wells wrote: > 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@xxxxxxxxxxx> 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@xxxxxxxxxxx > > 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@xxxxxxxx > > http://www.saout.de/mailman/listinfo/dm-crypt > > > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt -- Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@xxxxxxxxxxx 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@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
