[Owncloud] Synchronization in owncloud

Tue Mar 23 21:24:55 UTC 2010

On Wed, Mar 24, 2010 at 12:49 AM, Frank Karlitschek <karlitschek at kde.org>wrote:

> On 22.03.2010, at 21:52, Hasanat Kazmi wrote:
>
> > 5. Clearing my "service discovery" point: We always have to enter URL of
> WebDav host. If we use service discovery mechanism (e.g. like that used in
> iTunes, which finds other computers in the network sharing music), then we
> can automatically locate the server which is being hosted within the network
> -- e.g. if take out my laptop and connect to home network, Now my cloud is
> also hosted in my home network and it exposes its host service to the
> network. The client on my laptop will find it automatically and tell me that
> my last sync was with that host (or there is a new host, do I want to create
> a sync relationship with that?).
> > Secondly, I can also search for hosts/clouds... Do you think this can be
> a good feature.. Right now all syncing solutions lack such a functionality.
>
> This is an interesting idea. I think it is not a common usecase that you
> don´t have you owncloud configured yet and you don´t know the url.
> But why not :-)
>
>
http://www.amk.ca/python/zeroconf  It is the required read for service
discovery.

>
> > We go with WebDav. I still have reservations for large file: if we are
> transferring a blue-ray movie and connection breaks half-through, so on
> reconnection, do we have to start transfer from beginning or can we
> implement a download manager sort of functionality to tackle this?
>
> True. At the moment I suggest to go with WebDAV because it works with all
> operation system, you don´t need a client application, no problems with
> proxyservers and firewall. Open standard. Easy to install the server and
> more.
> But at a later stage we could develop our own protocol of course. At the
> moment I think we should go with WebDAV.
>
> +1

>
> > I have a little confusion about what have you envisioned. Should it be
> something like, a folder which syncs automatically (like dropbox) or are you
> envisioning something more.... please elaborate.
>
> I think we want to have different ways to access the data. Mounting with
> fuse or direct access with the WebDAV kioslave if you have a fast internet
> connection, webinterface if you have no local storage like on mobile phones,
> or syncing of all files or a part of the files if you need offline support
> like on notebooks.
>
> I think the GSoC project should solve only the syncing part.
>
> Looks good to me, What about making it independent from KDE (I mean without
using any KDE (*DE) specific libs) ? Cross platform?

Do we have any source code available?.. I want to see what has been
implemented yet.

>
>
> > Hasanat Kazmi
> > +923464362473
> >
> >
> > On Fri, Mar 19, 2010 at 11:54 AM, Frank Karlitschek <karlitschek at kde.org>
> wrote:
> > Hi Hasanat,
> >
> > 1. I don´t have experience with Unison but it looks nice. :-) I would
> still suggest to mount the ownCloud via webdav and then sync between the two
>  "local" folders.
> > 4. PyQT is fine with me for the GUI
> > 5. I´m not sure what you mean. You always want to sync with you ownCloud
> installation. So you have to put your ownCloud url in the syncinc client
> configuration somehow. What exactly do you mean?
> >
> > Cheers
> > Frank
> >
> >
> > On 17.03.2010, at 17:51, Hasanat Kazmi wrote:
> >
> > > Hi,
> > >
> > > 1. I think a very good contender for synchronization in our case can be
> Unison. Please do read this [1], its FAQ and a comparision between unision,
> rsync and webdav.
> > > 2. Rsync doesn't require SSH, it needs it for security. The same goes
> for webdav. We can always use rsync on 80 or 443 but then we will lose
> ability of server to have a website on 80 and I think this can't be gone
> away with.
> > > 3. Rsync fails at versioning, though it makes quite decent logs.
> > > 4. We can discuss about GUI once we decide what to do with core system.
> PyQT is my favorite though.
> > > 5. We must put some service discovery mechanism too. I have worked with
> ZeroConf. That can be used here.
> > >
> > > More ideas please..
> > >
> > > [1]
> http://alliance.seas.upenn.edu/~bcpierce/wiki/index.php?n=Main.UnisonFAQGeneral
> > >
> > > Hasanat Kazmi
> > > +923464362473
> > >
> > >
> > > On Mon, Mar 15, 2010 at 2:10 PM, Frank Karlitschek <
> karlitschek at kde.org> wrote:
> > >
> > > On 15.03.2010, at 09:14, Hasanat Kazmi wrote:
> > >
> > > > Hi,
> > > > I want to add synchronization features in owncloud as part of gsoc.
> > > > I want it to be a synchronisation software (like Ubuntu One or
> dropbox) using rsync. But using webdav or any other tecnology can be an
> option. Please pour in suggestions. How do you please think synchorinzation
> should go in owncloud?
> > > >
> > > >
> > > > Hasanat Kazmi
> > > > +923464362473
> > > > _______________________________________________
> > > > Owncloud mailing list
> > > > Owncloud at kde.org
> > > > https://mail.kde.org/mailman/listinfo/owncloud
> > >
> > >
> > >
> > > Hi,
> > >
> > > this sounds great. It would be fantastic if you could work on the
> syncing.
> > >
> > > I already have some ideas how synchronization can be done.
> > > A reality check is of course missing. :-)
> > >
> > > The idea is to have a small client application, perhaps a python script
> with a Qt QUI or something else running on the client.
> > >
> > > This client mounts the server folder via WebDAV in a "hidden" directory
> and than runs rsync or an other syncing script between the "hidden" server
> directory and the local data directory.
> > >
> > > This has several benefits compared with directly syncing via rsync with
> the server or an own protocoll.
> > > 1. It works via port 80 or 443 and with all proxy servers and
> firewalls.
> > > 2. You don´t need an SSH server or account on the server for syncing.
> So installation of the ownCloud server is easier.
> > > 3. You get automatic versioning backuping and logging for free if you
> use WebDAV.
> > >
> > > What do you think? :_)
> > >
> > > Cheers
> > > Frank
> > >
> > >
> > >
> > > --
> > > Frank Karlitschek
> > > karlitschek at kde.org
> > >
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Frank Karlitschek
> > karlitschek at kde.org
> >
> >
> >
> >
> >
>
>
> --
> Frank Karlitschek
> karlitschek at kde.org
>
>
>
>
>
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