Les Mikesell wrote: > Rob Owens wrote: >> Holger Parplies wrote: >>> - The higher the level of the incremental backup, the greater the >>> speedup, >>> but the less certain you are of not having missed some changes. >> In the case of rsync, is a greater speedup achieved due to 1) less >> calculations to make about what to transfer, or 2) less actual transfer >> of files? > > In backuppc's case the big differences are that an incremental run > skips files where the timestamp and length match in the directories > where a full compares block checksums over all files, and a full run > also rebuilds the pc directory completely. > >> I'm still a little fuzzy about how rsync interacts with the pool, and >> I'm trying to minimize my file transfers on hosts that I back up over >> the internet. For instance, suppose my full backup consists only of >> fileA.txt and my first incremental backup consists of fileA.txt and >> fileB.txt. If no more files are added on the host, does my next level 1 >> backup (using rsync) re-transfer fileB.txt because rsync is referencing >> the last full backup, even though fileB.txt already exists in the pool? > > The 3.0 version has an option to control that. What option is that? I think I need to spend some time getting to know that option... Are you referring to the $Conf{IncrLevels} option? I was looking into that, but again I'm up against my lack of understanding of how rsync interacts with the pool when determining which files to transfer.
-Rob ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/