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Re: Journalling idea


From: Gabriel Ambuehl <gaml@xxxxxx>
Date: Wed, 21 Sep 2005 16:30:50 +0200

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 ;)



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