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Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu
From: |
Gabriel Ambuehl |
Subject: |
Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty |
Date: |
Sat, 24 Feb 2007 10:09:46 +0100 |
User-agent: |
KMail/1.9.6 |
On Saturday 24 February 2007 09:33:05 Michael Baierl wrote:
> Bad to say there are no alternatives out there - a tool that encrypts
> backups, does not waste bandwidth, creates small backup files, does
> incremental backups.... and ideally works with Windows and Linux :)
I would say the problem it is trying to solve IS really hard (which is kinda
supported by the fact that I don't know of any other tool doing it, either).
Basically you have to generate binary patches against older version you don't
actually have access to...
I wonder if perhaps this is asking too much. As much I hate to say it, but not
even rdiff-backup really works reliably for me, even that one would
occasionally do full backups for no apparent reason. I've gone back to plain
rsync in that case.
Maybe, at the price of more bandwidth and storage consumption, but gaining
more resiliency, one should simply store each changed file in an incremental
set. That means you can basically work with gpg and whatever transport you
chose and don't have to mess with rsync signatures (which while being a very
creative approach, probably is not what they really were intended to be used
for). All you need is an always updated list of the version of files you have
already stored on the backup machine...
A similar approach would be to use a crypt filesystem (that encrypts
individual files) on the client and just run rsync on the encrypted files,
but I rather stick to using LUKS on my laptop. And using rsync on a LUKS
DEVICE would perhaps work, but take forever on most pipes. And it most
certainly isnt efficient in any way.
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- [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty, Gabriel Ambuehl, 2007/02/23
- Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty, Travis H., 2007/02/27
- Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty, Michael Baierl, 2007/02/28
- Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty, Gabriel Ambuehl, 2007/02/28
- Re: [Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty, Michael Baierl, 2007/02/28