On Mon 22 May 2006, Andreas Fehr wrote: > > If added '-c' to the already existing '-a'. Now it looks as follows: > > /opt/rsync/bin/rsync -cav > --link-dest=/home/user/backup/old > /home/user/source > /home/user/backup/new > > > I expected, that rsync doesn't care about the timestamp anymore. It > should calc the checksum of all the files in the source directory, > compares them with the files in the '--link-dest' directory and just > copies the files with a different checksum. But there is no change in > the behavior of rsync. I get the same result with or without the '-c' > option. > > My guess: --checksum does not work on --link-dest. Is this by design?
It does, but not the way you expect it. The -a also implies -t, so you're telling rsync to preserve timestamps. The only way it can do that is by creating a new file, as the --link-dest tree has a different timestamp. The --checksum will only _increase_ the number of newly created files, if anything; if you change a file in the source, but do not change its modification time (e.g. by resetting that after the change) or any other metadata such as size or ownership, then without --checksum rsync will be "fooled" into thinking it's the same as the version in the --link-dest tree, and will link to that. With --checksum rsync will see that it is in fact different, and will create a new file instead of linking. Paul Slootman -- To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
