On Fri, Jul 11, 2008 at 10:10:16AM -0400, Jeff Woods wrote: > --bwlimit=17 --partial --append
You only want to use --append if you can guarantee that the files will not have any changes in the existing data on the receiving side. A modern rsync does not compute a full-file checksum for --append unless you use a second --append, since that slows down the appending. If you're using -c (--checksum), you probably don't want to do that, since that's super slow. Just use -t (--times) and let the normal size+mtime check look over things for you. If you find that you really need checksumming, you might want to look at the db.diff in the patches dir that lets you cache checksums in a DB (i.e. SQLite or MySQL) and associate them with unchanged files (since it matches a file's size, mtime, ctime, and inode, it is safe). If the source of the I/O is rsync's scanning of the directories (not the checksumming of the files), you may want to look into the slow-down.diff file in the patches dir, as that provides a way to get rsync to do its directory scanning more slowly. > negating the need to re-read the entire file for a post-transfer > checksum There is no such thing in rsync, since it computes the checksum as the file is written. ..wayne.. -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
