On Wed, Nov 17, 2010 at 9:14 AM, Venkatesh Srinivas <me@acm.jhu.edu> wrote:

> On Wed, Nov 17, 2010 at 11:51 AM, David Leimbach <leimy2k@gmail.com>
> wrote:
> > I'm giving consideration to maintaining a venti-based setup for my house
> for
> > all the digital media we have (since getting our Apple TV, we've had more
> > stuff to stream around the house).
> > I've just now started playing with things like vac/unvac, to backup and
> > extract trees of my HFS+ file system and I wonder about a few things.
> > What do people do if they ever lose their venti scores?  Seems like this
> is
> > "handle-less" data now, and fairly useless.
> > I figure I could keep a vac archive of venti scores, then I'd only need
> to
> > "remember" one, and name the files I store the scores in reasonably, but
> if
> > that's lost... what are my options?
> > Dave
>
> There is a script floating around (dumpvacroots or somesuch) that lets
> you recover vac scores given access to the venti arenas.
>

> I'd be very careful with vac -m and -a on Unix; both have been at the
> root of considerable data-loss on a unix venti for me. I'd recommend
> vac-ing tarballs, rather than using vac's on unix trees directly. But
> your mileage may vary...
>

This is mainly a form of secondary backup for me for now, but given what I
learn about it over time, it could become a primary.

Are there any open problem reports around this?  I might be interested in
tackling some of these, or at least trying to reproduce them.

I still do some rsync based backups anyway.


>
> -- vs
>
>