On Sun, 2007-12-16 at 11:52 -0800, [EMAIL PROTECTED] wrote: > I want to set up two portable 1TB drives so users have their own LVM > partitions to mount as crypto drives. These partitions would have to > be mounted manually with the passpharse supplied by each user (this is > a family setup, just a few users). But I want the system to be able > to backup one 1TB drive to the other for offline backup. > > 1. What crypto system to use? > > 2. I have planned this with each user having their own LVM partition, > but would it be possible to use one passphrase and make the entire > drive crypto, then run LVM on top of that? This is a curiousity > question more than anything. It might be handy for a system disk > someday, but not now. > > 3. What is the right way to backup one 1TB drive to the other? dd > would probably work, but that sounds rather crude, not to mention > it would have to copy the entire 1TB over USB. It would be a lot > faster to only backup what is needed. I want to backup partitions > automatically once a week, without knowing the passphrase or > requiring the partitions to be mounted. If each LVM partition is > only expanded as necessary, unused space in each partition would > be kept to a minimum. Or is it possible for the backup to only > backup as much of each partition as is used, without knowing the > passphrase or having it mounted? I suspect not, but I don't know. > I would probably use encfs, forget about the one-lvm-per-user complexity, and just back up the encrypted filesystem just like any other fs.
-- Albert W. Hopkins -- [EMAIL PROTECTED] mailing list
