Journalling idea

[Gabriel Ambuehl]

Oliver Fromme wrote:

>Emiel Kollof wrote:
> > Gabriel Ambuehl wrote:
> > > Oliver Fromme wrote:
> > > > The result would be that the backup filesystem represented
> > > > the state of the original filesystem as of one hour earlier.
> > > > It would be a "moving snapshot", so to speak, which could
> > > > be useful for file recovery (accidental rm) and debugging.
> > > > 
> > > > Would that work, or am I dreaming?
> > > 
> > > As far as I understand, that would work easily. However, it might not
> > > even be needed once UNDO is working (that's right, there's plan for TWO
> > > way journalling ;)
>
>I'm aware that Matt has implemented undo records in the
>journal stream.  But how would a user restore a single
>file (or an entire directory tree) that existed one hour
>before?
>
>  
>

AFAIK, userland utilities for that will be added later on. UNDO without
code to make use of it hasn't got that much of a point ;)