On Sat, Dec 29, 2012 at 10:05:12AM +0100, Milan Broz wrote: > On 12/29/2012 08:06 AM, Arno Wagner wrote: > > On Fri, Dec 28, 2012 at 08:22:25PM +0100, Milan Broz wrote: > > > Ext2 superblock signatures are all not wiped. Test I ran: > > Backup signatures should not be problem, (from the fsck problem > POV, not from security/old data on disk POV of course). > > Tools screams a lot if you want to use these only and primary > signature is missing. Yes, they should. I don't see this as a real problem. > Anyway, for wiping signature please suggest wipefs(8), > this tool is designed to wipe all known signatures. Added. I also give long wipe instructions, but have now wipefs as fast one. Arno > (I am trying to avoid linking cryptsetup to libblkid, but > if this happens some time in future, cryptsetup can call wipefs > directly.) > > IOW > wipefs -a <device> > > should destroy all known signatures to blkid > (by minimalistic writes, this is not full device > wipe, so it is very quick). > > Milan > _______________________________________________ > 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 ---- One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision. -- Bertrand Russell _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
