On 8/23/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > I have a file system that contains millions of small files. Since I > backup it everyday with rsync using slow WAN link, I think it will be > nice that if rsync can do this: > > An option that let rsync only check with remote rsync daemon about local > files that has last modification time newer than one day ago (so is > modified since yesterday backup). This can greatly reduce the WAN > traffic. > > Is this doable with current rsync?
No. A request for enhancement has been entered for a --newer option that would do this: https://bugzilla.samba.org/show_bug.cgi?id=2423 . At present, I can think of two things you might try: 1. Use `find' to list the files that need to be checked and pass the list to rsync using --files-from, as described in the request for enhancement. 2. Use Unison ( http://www.cis.upenn.edu/~bcpierce/unison/ ) instead of rsync. If I understand correctly, since Unison stores the state at the last synchronization on both sides, the local Unison knows which files have changed since then and mentions only those files to the other side. (Someone please correct me if I am wrong about this.) Matt -- To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
