I've got 2 full-device luks devices (usb3) that somehow got corrupted headers at the same time. They were working, I powered down the system to move some plugs and when I brought it back up, my headers are unrecognized. (See below.) The system is a mac mini running arch linux. It has been rebooted and powercycled repeatedly since being built and never had an issue, so I hesitate to blame refit. The only thing I can see is that there was a recent update of cryptsetup (to 1.6.3-2). I'm not sure if the devices were stopped cleanly before reboot (probably not, since its arch..) but the volumes were unmounted and I wouldn't expect to get corruption.

I'm dumb, and do not have a backup of the headers. (Well.. there might be a backup of one of them. Inside the encrypted volume.. yeah, like I said, I'm dumb. If I get this back, that is getting remedied immediately..)

Comparing with other users, it looks like some of the entries are swapped around. I started doing a comparison to the on-disk format pdf, but I haven't had a chance to print it out and get intimate with it yet (beyond noting that LUKS 0xba0xbe is missing of course.)

Is there any hope? Here is what I've got at the beginning the drives:

00000000 00 00 00 00 48 00 00 00 00 00 00 00 32 32 30 64 |....H.......220d|

00000010 32 30 33 64 2d 39 62 62 34 2d 34 35 00 00 00 00 |203d-9bb4-45....|

00000020 24 00 00 00 12 00 00 00 24 00 00 00 00 00 61 69 |$.......$.....ai|

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 32 35 36 00 00 |........sha256..|

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 da 22 00 00 00 00 24 01 00 00 00 00 00 00 00 00 |."....$.........|

and:

00000000 00 00 00 00 48 00 00 00 00 00 00 00 32 33 63 38 |....H.......23c8|

00000010 62 61 33 31 2d 37 61 63 66 2d 34 32 00 00 00 00 |ba31-7acf-42....|

00000020 24 00 00 00 12 00 00 00 24 00 00 00 00 00 61 69 |$.......$.....ai|

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 32 35 36 00 00 |........sha256..|

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 de 8b 00 00 00 00 24 01 00 00 00 00 00 00 00 00 |......$.........|

Thanks!