rsync - Nov 2009 - --detect-renamed --detect-moved and -b

Hi,

I played around with the combination of rsync --detect-renamed
--detect-moved and -b.
Given the following tree:
src/dir/file
dest/src/dir/file
I renamed src/dir to src/dir2 and ran the following command:
rsync -a --detect-renamed --detect-moved --delete -b --backup-dir=bak src dest
ending up with:
dest/bak/src/dir/file

Is it supposed to do that? I was expecting it to detect the renamed
directory (or moved file) and exclude it from the backup.

Tom

On Wed, 2009-11-11 at 20:27 +0800, Thomas Gutzler wrote:
> I played around with the combination of rsync --detect-renamed
> --detect-moved and -b.
You can't combine the --detect-renamed and --detect-moved options
because they make use of the partial dir in incompatible ways.  The last
option on the command line takes priority.  (Yes, the implementation of
--detect-moved is a hack.  No, I don't care to improve it myself.)
> Given the following tree:
> src/dir/file
> dest/src/dir/file
> I renamed src/dir to src/dir2 and ran the following command:
> rsync -a --detect-renamed --detect-moved --delete -b --backup-dir=bak src
dest
> ending up with:
> dest/bak/src/dir/file
> 
> Is it supposed to do that? I was expecting it to detect the renamed
> directory (or moved file) and exclude it from the backup.
Yes, the current design is that a deleted destination file is backed up
even if it was also detected as a rename.

In addition, your case tickles an awkward-to-fix bug in the
--detect-renamed implementation: renames into new directories are not
processed because their partial dirs are not available yet.  See:

http://lists.samba.org/archive/rsync/2007-December/019469.html

-- 
Matt