Changing permissions on existing backup source

[Dan Stromberg]

On Wed, Jan 1, 2014 at 10:09 AM, Charles Marcus
<CMarcus at media-brokers.com> wrote:
> If I change the permissions on the source maildirs, will this cause
> everything to be transferred again? Meaning, will rsync see everything as
> 'modified', thus creating a new copy of the entire mail store on the backup
> target?
>
> Or will the newest backup directory just reflect the new permissions for the
> hardlinked files, without making new copies of everything?

Come to think of it, this makes a good row in my backup software
comparison chart...  Added:

http://stromberg.dnsalias.org/~strombrg/backshift/documentation/comparison/index.html

HTH