very simple datastore reimplementation

[Jim Gettys]

On Thu, 2008-05-08 at 20:22 +0200, Marco Pesenti Gritti wrote:
> On Thu, May 8, 2008 at 4:22 PM, Jim Gettys <jg at laptop.org> wrote:
> > On Thu, 2008-05-08 at 16:06 +0200, Tomeu Vizoso wrote:
> >  > On 5/8/08, Jim Gettys <jg at laptop.org> wrote:
> >  > > On Thu, 2008-05-08 at 13:09 +0000, Tomeu Vizoso wrote:
> >  > >
> >  > > > I'm having trouble understanding what you are requesting and what
> >  > > > could be done about that.
> >  > > >
> >  > > > Can you please enumerate the requirements that affect the internal
> >  > > > file layout and any other view that we may be able to provide?
> >  > >
> >  > > That there is *some* hope of finding a file by a human in a raw file
> >  > > system, that can be done with software already present on the system....
> >  >
> >  > With the proposed metadata text file, there's already that hope. You
> >  > think it's not enough and you may very well be right. What I'm asking
> >  > is: how big an effort are we willing to devote to this and until which
> >  > point we want to compromise on robustness and simplicity?
> >
> >  Until we know what the tradeoffs really are, we need to explore in this
> >  direction.  Names only as hashes has proved to be a major headache in
> >  practice in the field.
> 
> That's true. But I also think the FUSE layer will make a big
> difference in this regard, at the point that it *might* be enough.

This doesn't begin to deal with a USB stick taken to a Windows box...
No FUSE on such systems.

Having to have two different naming systems (one local, one removable
device) seems like duplication that should be avoided (if possible).

                        - Jim


> I agree anyway that more transparency at the raw file system level
> would be desiderable and that we should figure out what are exactly
> the tradeoffs there.
> 
> Marco
-- 
Jim Gettys <jg at laptop.org>
One Laptop Per Child