rsync --compare-dest creates all dirs and symlinks
schenkewitz at docomolab-euro.com
Tue Oct 18 18:07:56 GMT 2005
Being a rsync newbie, I wanted to use rsync for frequent backups that
should only contain the changes.
First I made copy of the important partition of the remote PC ("gany")
using dd and mounted the resulting local file using a loop device under
Then I tried:
rsync -Haziv --compare-dest=/mnt/gany/lib --compare-dest=/data/A/gany.1 \
root at gany:/lib/ /data/A/gany.1
I expected that rsync check everything and then finished without having
anything created, because there is no change between the loop-mounted
filesystem and the actual filesystem on "gany". Or at least create nothing
more than /data/A/gany.1/lib.
What happens is that rsync creates the whole tree of directories below
/data/A/gany.1/lib and also created all symlinks within that tree.
- Is there a way to avoid that?
(I also tried something similar with --link-dest but that produced
rather similar results.)
- If there is no way to avoid creating the directory tree and the
-- is there any better way to find out what is REALLY different between
the loop-mounted filesystem and the newly created one, other than
fiddling with "diff -r" and some processing for the symbolic links?
(If there would a way to find out what's really new, I could just let
it make the dir tree, then do the find-really-new-processing and
delete everything that equally exists within the loop-mounted
Sorry if this has been asked before. In that case, could someone give
me a pointer/link to the answer(s). Any help is very much appreciated!
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