On 08/10/2011 10:14 AM, Sun_Blood wrote: > Lucky I see that cryptsesetup has the luksHeaderBackup function. (LVM > also have a similar function). > My question here is if I accidental overwrite the first 5% of the disk > could I with this option restore and access the 95% rest of the system > data? Just short answer: both (luksHeaderBackup for LUKS and vgcfgbackup for LVM) create backup of _metadata_ not the data. With these backups you are able to recover LVM over LUKS mappings. Take is as backup of /etc with configuration of your system - it is good idea to regularly backup system config. But it says nothing about data on volumes itself. So it is obviously not replacement for normal data backup, just prerequisite. > And I final question. The output from luksHeaderBackup how sensitive > is that information? Is it like handing somebody my password if I > store it on a local unencrypted disk? It is written in man page. To decrypt drive you need LUKS header (or backup of it - even old with old keyslots) AND passhprase to some keyslot in it. LUKS header backup is basically just image of start of the disk - you can create similar backup using dd. See http://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions#6._Backup_and_Data_Recovery Milan _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
