[plug] Filesystems for slow networks

Richard Meyer meyerri at westnet.com.au
Sun Feb 15 22:48:26 WST 2009

On Sun, 2009-02-15 at 22:13 +0900, Bernd Felsche wrote:
> Leon Brooks <leon-plug at cyberknights.com.au> wrote:
> >On Sunday 15 February 2009 20:43:32 Bernd Felsche wrote:
> >> I've looked at a number of options including
> >> Intermezzo, Unison, Lustre, ...
> >> They tend to fall into one or more of the following
> >> categories: 
> >> 1) too complicated for the users.
> >>    (Unison is a steep learning curve) 
> >> 2) no longer supported (Unison)
> >> 3) probably unsuited for slow
> >>    (unreliable) links (Lustre) 
> >> What remain are (Open)AFS and Coda.
> >Is RSync feasible? Aussie origin 'n' all (Tridge). Easy
> >enough to make a one-click icon to do an RSync sync from
> >the 'Doze boxes. Your choice of whether each RSync login
> >is read-only or not (plus of course usual chmod stuff).
> Sadly not feasible as it requires interaction for synchronisation
> (or file monitoring) and the synchronisation direction varies, as
> well as the possibility of "collisions" with the likelihood of two
> users (finite probability) wishing to make changes to the file
> simultaneously.
> The direction of synchronisation also varies unpredictably. It's
> not like there's one master file that's copied and only read on
> "slaves".
> rsync is currently being used for other files where there's a master
> copy at head office and the branches get a read-only copy on their
> server. It works well for that.

I presume I'm WAAAYY too late in pointing out that this sort of thing is
what DBMSs were developed for ....

.. and also not all that helpful.  :-(

I'd also like to see what your solution ends up being ...

Richard Meyer
Necessity is the plea for every infringement of human freedom.
It is the argument of tyrants; it is the creed of slaves. 
William Pitt, 1783

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