cygwin rsync windows to windows ACL problem

havoc havoc at
Tue Oct 2 12:01:54 GMT 2007

I have rsync + robocopy working.  I would use robocopy alone but I don't think 
it can do what I want to do with rsync:

rsync -avP --delete --backup --backup-dir=<blah> SRC DST

...specifically the --backup and --backup-dir options which I use to make 
my "incremental" backups from the mirror, and then zip the backup dir after 
rsync finishes.

On Monday 01 October 2007, Matt McCutchen wrote:
> On 10/1/07, Steve Radich <stever at> wrote:
> > Wouldn't robocopy better serve these EXACT needs? It doesn't handle
> > partial file transfers, but neither will rsync given that you are
> > running it only on one end - I.e. to calculate the crc to compare the
> > files contents it would have to read the whole file, then transfer back
> > the changes - That would be SLOWER than just transferring the whole file
> > (assuming symmetrical speed).
> >
> > Running rsync on both sides it should be dramatically faster *IF* there
> > are several large files. If all small files and often changing then
> > robocopy may be just about the same.
> Correct.
> Havoc, if the speed benefit of delta transfers is not a priority, I
> would recommend that you just use robocopy.  Otherwise, you could use
> rsync on both sides in combination with robocopy to copy ownership, or
> if you want to use rsync by itself, we can try to get the ownership
> preservation to work.
> Matt


   - havoc

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