Backup feature?

[Phillip J Shelton]

"Peter C. Norton" wrote:

> On Thu, Aug 03, 2000 at 04:54:15PM +1000, Robert Graham Merkel wrote:
> > #ifdef OFFTOPIC
> >
> > One thing that I'd really like is a proper backup system designed for
> > use with CD-R(W), which supports a variety of backup strategies
> > (including incremental and differential), spanning across multiple
> > discs, and if possible (I wouldn't use it, but others probably would)
> > a nice friendly drool-proof GUI so that others will use it.
> >
> > #endif

Rather like the tar and dump systems for tape?

> IMO a log-based filesystem should be able to be extended (maybe
> special-purpose, maybe generally) do this - at the cost of a lot of extra
> space - and that way let you look at past snapshots of your files, too.  In
> principle if a filesystem is treated as a constantly updated, linear log,
> the log changes can be backed up to any device.  a cd r/w would be a good
> one.

CVS and RCS keep a copy of you old changes don't they? Hmm, if you were going
to insist on keeping absolutely every change as a separate snapshot it would
very quickly get quite high version numbers.

Phill