Re: Remote rsyncrypto

[Shachar S. <sh...@sh...>]

 

On 21/11/2016 19:42, Colin Simpson wrote: 

> I'm still here, well looking at this as a very useful project.
> 
> I see historically this has been asked before. Basically I'd like to
> use this to backup my large local server (approx 8TB) to a cloud
> service with this much storage (that I can't really trust). Which I
> guess is the intended use of rsyncrypto, with the added benefit of any
> changes being basically the only thing sent.
> 
> So backing up via SSH would be my preferred method. The suggested way
> from the previous thread was use rsyncrypto to another and sync this
> via rsync. But I just don't have a spare 8TB lying around.
> 
> Has it been tried to run this via say, sshfs? Would that work?

I have no idea how sshfs works, so I don't know. If I were to guess, I'd
say that files that have not changed would work (because rsyncrypto
doesn't touch them), but files that changed only a little might pay the
full bandwidth. 

Another complication is that rsyncrypto isn't, strictly speaking, one
pass. The file header is written only after the encrypted file is
written. This has its reasons rooted in the use of external utility for
the compression (Gzip), and the need not to pass it garbage past the end
of the file. They are not good enough reasons, so I had planned a new
version of rsyncrypto that would be able to work as a filter. Had that
been around, you could filter it to librsync, and get what you wanted.
Unfortunately, I don't know what decade I'll manage to get around to
actually doing it. 

Either way, it is worth a try, and let us know what the results are. 

Shachar