On Fri, Aug 22, 2014 at 11:08:56 CEST, Jonas Meurer wrote: > Hi John, > Am 21.08.2014 um 22:46 schrieb John Wells: [...] > As Arno already wrote, the hexdump from your meant-to-be LUKS container > on HOME_LV in FINALFRONTIER_VG doesn't look too promising. I've never > heard about 'GNU Parted Loopback 0' before, but it sounds like something > caused Parted to overwrite your LUKS header. Not necessarily. The other container had that in it the one time as well, but it fixed itself ... > Last hope is to find the LUKS header with an offset on the partition. > Try to search for 'LUKS' by grepping the output of 'strings > /dev/FINALFRONTIER_VG/HOME_LV'. If you don't find the string 'LUKS' > followed by something describing your cipher and hash algorithm, I fear > that this second partition is lost. I second searching for that. It may not be the only way though. Easy way to search: hd <partition> | grep "LUKS" That gives you hex offset(s) to examine further. > According to your hexdump it's not astonishing at all that neither of > the distros do recognize the FINALFRONTIER_VG/HOME_LV logical volume as > LUKS container. It simply doesn't start with a LUKS header. > > The question rather is: what action resulted in the LUKS header being > overwritten. In the past the partition configuration in the Ubuntu > installer was kind of confusing, and some people trashed their existent > LUKS containers by reformatting them as new LUKS container, but it > doesn't look like that happened to you. I think it is configuration mis-detection and with a randomized component. > I don't want to join the rant against modern Linux distros, LVM and MD-1 > format here. In fact there've been quite some serious bugs in Linux > (vanilla kernel, userspace tools as well as distro implementations) in > the past, and ranting about how fucked up everything is today compared > to the good all days doesn't help to fix them. I prefer to isolate, > identify and fix the bugs and improve the user experience that way :) I am not ranting about bugs, I am ranting about broken architecture and KISS violations. Having seens some commercial software source code, I do know that there, it often is even worse. There are just to many peiople creating software that are not good at it, and FOSS is really no exception. 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
