On Tuesday 08 September 2009 16:37:42 Gavin McCullagh wrote:
> Hi,
>
> On Tue, 08 Sep 2009, Kern Sibbald wrote:
> > I think I now understand what you are asking for.  You want to have
> > Incremental Jobs go forward in time from a Full (current behavior) and
> > incremental (decremental) jobs that go backward in time.   Those reverse
> > incremental jobs would be something synthesized from the Full in question
> > and a previous Full.   The reason is that this would allow one Full to
> > cover twice the period of time that it does currently (give the
> > appropriate incrementals are available).
> >
> > Is that correct?
>
> Pretty much.  Though I would note that the last sentence possibly needs
> clarification.  As with regular incrementals, you can build up several over
> time allowing the oldest full backup to cover many previous periods of time
> (in combination with the appropriate sequential series of "decremantals").
>
> Hopefully that clarification doesn't change anything much.

No, that was included already in my understanding ...

>
> > If my understanding of what you are proposing is correct, then yes, I
> > think it is possible.  The next questions are: is it something we want to
> > implemement? how big of a project is it? who would implement it?  when?
> >
> > I don't have any answer for the above, except I imagine that it is not at
> > all a small project.
>
> Of course.  I guess I might write up a proposal and if it's deemed too much
> work, too little benefit or some combination of those, it will presumably
> be either long-fingered or refused for those reasons.

For the most part, this is not up to me.  I generally only refuse projects 
that seem impossible or go completely against Bacula's philosophy, and that 
is not the case here.  Otherwise, projects are voted on by the users and to a 
very large extent the voting priority determines what is implemented.  There 
are some exceptions, such as funded development where the implementation of a 
particular feature can be accellerated ...

Best regards,

Kern


>
> Thanks for your patience :-)
>
> Gavin



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