Does rsync detect file corruption? -- hard link

[Daniel.Li]

On Sun, 2009-05-24 at 22:13 -0400, Matt McCutchen wrote:
> On Mon, 2009-05-25 at 10:09 +0800, Daniel.Li wrote:
> > On Mon, 2009-05-25 at 09:58 +0800, Daniel.Li wrote:
> > > What if a video editor?
> > > 
> > > Lots of work with video files, which is very large, about 500MB per
> > > file. Editor only delete or rearrange frames in that file.
> > > 
> > > And then it will be back up 500MB again. In this case rsync can handle
> > > properly. I think.
> > 
> > I mean in this case, rsync can't handle properly. It will backup 500MB
> > again. It'll not save any disk space.
> > 
> > If I'm wrong, please correct me.
> 
> That's correct.  When small changes are made to big files, rsync reduces
> network usage but not disk usage.  rdiff-backup
> ( http://www.nongnu.org/rdiff-backup ) reduces disk usage by storing
> deltas in the destination, but then you need rdiff-backup to recover.

But these are some limitations with rdiff-backup, well, just list what I
concerned.

a) does not support files greater than 2 GB'
b) It seems quite slow (~0.5+MBps), but I didn't test it myself
(http://www.nongnu.org/rdiff-backup/FAQ.html#speed ). 



> 
-- 
Daniel Li