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