How to emulate rdiff behaviour

Daniel.Li daniel_li at usish.com
Mon Jun 1 05:42:42 GMT 2009


On Sun, 2009-05-31 at 23:11 -0400, Matt McCutchen wrote:
> On Mon, 2009-06-01 at 07:10 +0800, Daniel.Li wrote:
> > On Sun, 2009-05-31 at 14:34 -0400, Matt McCutchen wrote:
> > > > And one more thing here:
> > > > If you are going to prepare this batch file, it seems there will
> be
> > > double the workload of network, see below statements? Is that
> right?
> > > > 
> > > > > rsync -av --only-write-batch=/batches/$DATE
> > > bhost:/backup2/ /backup/
> > > > > rsync -av /backup/ bhost:/backup2/
> > > 
> > > Not if you put /backup and /backup2 on the same machine by
> dropping
> > > the
> > > "bhost:" from those commands, as Wayne mentioned.  He included it
> just
> > > to point out the possibility of having those dirs on different
> > > machines.
> > > 
> > 
> > Humm... I have a NAS storage device, which is bhost,
> 
> Does it have to be that way?  If you run Wayne's entire command
> sequence
> on the NAS, you won't have a "bhost" and you'll avoid doubling the
> network usage.

But the source folder is on my laptop, about 30GB size, and I need
backup to NAS.

So if do this batch file on NAS without network usage, we have to copy a
previous backup internally on NAS. I have to say 30GB internal copy
really takes a lot of time.

What do u think?

-- 
Daniel Li



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