Tolerating network errors

[Luke Plant <L.Plant.98@cantab.net>]

While doing my first real backup, which included 40Gb of data, I
eventually saw this error:

tarsnap: Connection lost, waiting 30 seconds before reconnecting
tarsnap: Connection lost, waiting 60 seconds before reconnecting
tarsnap: Connection lost, waiting 90 seconds before reconnecting
tarsnap: Connection lost, waiting 90 seconds before reconnecting
tarsnap: Too many network failures
tarsnap: Error storing chunk
39304ac482fc548c57492120287fd20831557dfd32049b4f37c38a8834b63374
tarsnap: Error in chunk storage layer
tarsnap: Error writing archive

I'm trying to work out how to resume the backup, if that's possible. I'm
doing this to backup a computer over a broadband connection, so internet
connection is not always reliable, and it is always slow, and I need to
be able to tolerate more network errors.

Further, when I try to "--list-archives" to see if that gives any more
details, I just get this error message:

$ tarsnap --list-archives
tarsnap: Callbacks uninitialized
tarsnap: Callbacks uninitialized
tarsnap: Error listing archives

Any guidance would be appreciated - even if it is "tarsnap is not
appropriate for your use case".

Thanks,

Luke

-- 
"Oh, look. I appear to be lying at the bottom of a very deep, dark
hole. That seems a familiar concept. What does it remind me of? Ah,
I remember. Life."  (Marvin the paranoid android)

Luke Plant || http://lukeplant.me.uk/