> -----Original Message----- > From: Les Mikesell [mailto:[EMAIL PROTECTED] > Sent: Wednesday, October 17, 2007 9:02 PM > To: List Receiver > Cc: [email protected] > Subject: Re: [BackupPC-users] Rsync fulls complete, but incrementals > don't > > List Receiver wrote: > > I've got a BackupPC 3.0 system in place that is backing up a couple > dozen hosts. Most of the hosts are Windows boxes running Rsyncd, and > they backup just fine. One of my hosts, however, can't seem to > complete an incremental run for the life of it. A full run completes, > but takes a long time to do so (almost a full 24 hours). Basically > every incremental run times out or is interrupted by the hosts Internet > connection (it's backed up over a WAN link to the BackupPC server). > > > > This system *used* to do incremental backups just fine, but one day, > it quit. I've upgraded the rsyncd code to the latest available on SF, > I've restarted the service a few times, I've watched the system with > Task Manager while the backup is running and not noticed anything using > high resources. Rsyncd acts as though it's disk-bound, by which I mean > that it occupies very little CPU time or memory while it pulls the list > of changed files together. Kernel time on the system during the > generation process is almost non-existant, though. Once the backup run > actually generates a transfer PID, the usage drops even lower. It's > like there's a 200ms timeout between each command that rsyncd receives > and fulfills. > > > > Has anyone seen anything like this before? Any idea how I should go > about troubleshooting it? > > > > This sounds like something unique to your wan link. Is it possible that > it times out and drops idle connections? Rsync transfers the entire > directory listing first, then the server walks through the whole list > and on incrementals it only transfers anything when differences are > found in the directory contents. If you have a large set of files with > few changes you might have long periods of idle time and some network > devices like nat routers may drop idle connections after timeout period > - usually these are long, but perhaps something is misconfigured. > > -- > Les Mikesell > [EMAIL PROTECTED]
This is definitely possible. This particular host does have a lot of small files that are being backed up. I thought rsync transfers didn't really do much differently whether the run in BackupPC was full or incremental. I thought in both cases you're basically still only transferring the changes. Am I way off base here? ------------------------------------------------------------------------- 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 [email protected] https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
