My apologies if this has been asked before - I searched the archives but couldn't find it, probably because I'm not sure what terms to use.
I'm trying to rsync database backups from point A to point B, where point B has rsync running as a service. Every day I make a new backup on point A (mike_db_20041110.bak), and since there's no matching file on point B, the entire file is sent over. But since these are backups of the same database, the difference between mike_db_20041110.bak and the prior backup, (mike_db_20041109.bak), should be fairly minor. Is there any way to tell it that I want to rsync mike_db_20041110.bak, using mike_db_20041109.bak as a source, so that when I'm done I still have both files? I could build a script to rename them to the same filename, but I'd rather let rsync do the work if possible. Thanks for the help. I've been using Rsync for our backups for a year now, and absolutely love it. Now that the backups are getting bigger, it's time to get more aggressive. Michael p.s. one other question - I know that Rsync compresses the file, but does it look at the whole file first, then send? The speeds I'm getting sending these bak files doesn't look like it's being compressed - the end file grows by about 10mb a minute, which is far less than we should get with our T1. And if it looks at the whole file first, I should be seeing 10-to-1 compression. Thanks. -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
