I have been playing with Unison and so far it seems like it will work just
fine.

Thanks for everybodys help!!


On 11/6/07, der.hans <PLUGd@lufthans.com> wrote:
>
> Am 06. Nov, 2007 schwätzte Dan Lund so:
>
> > There's an application called unison that'll take care of
> > bidirectional synchronizations pretty easily.
> > http://www.cis.upenn.edu/~bcpierce/unison/
>
> Unison is great. I recently did a mini-presentation on it at a east side
> meeting.
>
> Unison doesn't handle hard links. That's probably fine for most people,
> but doesn't work for some of my filesyncing needs.
>
> Make sure to add "times = true" to the config! That makes it much easier
> to figure out what's going on when you're reviewing the changes.
>
> The only times I end up with conflicts is when a file was changed on both
> sides between syncs. It gives you an opportunity to diff the files.
>
> Unison can be run via command line and therefore via cron.
>
> I also use unison to sync one data repository with several machines with
> changes happening on each of the machines. Again it works unless a file
> was changed on multiple machines prior to propagation.
>
> You can choose to have unison take the default action and it'll move
> things without conflicts ( including file deletions ) and leave the files
> that are in conflict. Theoretically. I haven't actually gotten to the
> point where I automate it that much.
>
> Unison maintains a DB of the files in the repositories, so it can
> determine if they've changed locally.
>
> Here's info from the rsync manpage:
>
> ###
>         To  synchronize my samba source trees I use the following Makefile
> tar?
>         gets:
>
>             get:
>                     rsync -avuzb --exclude ?*~? samba:samba/ .
>             put:
>                     rsync -Cavuzb . samba:samba/
>             sync: get put
>
>         this allows me to sync with a CVS directory at the  other  end  of
> the
>         connection. I then do CVS operations on the remote machine, which
> saves
>         a lot of time as the remote CVS protocol isn?t very efficient.
> ###
>
> I don't know if that'll fit your needs.
>
> There's also tra, but the whole 'this is experimental' thing and lack of
> updates since 2002 keeps me from trying it :).
>
> drsync - wrapper for file synchronisation via rsync
> syrep - A generic file repository synchronization tool
>
> Looks like syrep handles hardlinks, but not modification times or
> permissions.
>
> ciao,
>
> der.hans
>
> > On 11/6/07, Shawn Badger <badger.shawn@gmail.com> wrote:
> >> I need to sync a folder on 2 servers, sounds easy, but the catch is
> that
> >> they basically have to mirror each other. So if I deleted a file on one
> it
> >> goes away on the other, but If I add a file it shows up on both. The
> catch
> >> is that a file could be added or deleted form either system. Is there a
> way
> >> to make rsync catch these changes and make sure they get mirrored? The
> other
> >> option I am thinking about involves running a script that copies new
> files
> >> to a "holding area" and point both servers to the holding area for the
> sync
> >> source. the downside to that is I don't know how to handle deletes. I
> >> haven't had much luck with Google on this yet, but I am still looking.
>
> --
> #  https://www.LuftHans.com/        http://www.CiscoLearning.org/
> #  Eternal vigilance is the price of liberty. -- Thomas Jefferson
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