[Duplicity-talk] new ftp backend

[Thorsten Schnebeck]

Hi,

I tried to use the ftplicity/duplicity tool combo to backup my root 
server to the ftp-only backup server of my host.

duplicity worked like charm - but only on single branches of my file tree. 
Everytime I tried to backup the whole tree I got the strange connections 
timeouts and socket errors.

I tried different versions, different patches from different places but I got 
no stable backup processing.

When reading about all the problems that seems to be a combination of server, 
timing and pythons ftplib *me* wonders that I did not have all these problems 
with my old simple backup that use the scriptable ftp-client ncftp.

So, last week I deleted the current ftp-backend and wrote a new one based on 
ncftp - and all problems are gone :-)

I can not say my backend is better than the current one, its more a "works for 
me" thing and I want to share the code, so it is not lost and can help 
others. You need the attached patch (vs. duplicity-0.4.3.RC8) and of course 
the ncftp package. I use

net-ftp/ncftp
      Latest version installed: 3.1.9
      Homepage:      http://www.ncftp.com/

I'm not really a python programmer, the code is adapted mainly from the rsync 
backend code.

HTH

  Thorsten 

P.S. Yes, the delete function is a bit of a hack ;-)

backend.py.patch
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