Re: [BackupPC-users] rsync over ssh, non-efficient datatransfer
2008-05-26 16:49:32
Rejo Zenger wrote:
> EHLO,
>
> I have this small but annoying problem: it seems my backuppc setup with
> rsync over ssh is copying every file every time and only determines on
> the local server what has changed - instead of copying only the changed
> files. Needless to explain this isn't very optimal or efficient. :)
>
> I noticed this issue when I was adding 30 GB of static data to the
> remote server. In the first night I saw a lot of extra traffic. But,
> in the following nights I saw that same pattern again (a lot more
> bandwith being used). As these additional 30 GB are static content, I
> would expect all nights but the first to see limited amount of traffic.
>
> Both servers are running Debian 4.0 Etch. I am running BackupPC version
> 2.1.2-6, with the OpenSSH client version 4.3p2-9etch2 on the server that
> is doing the backup and OpenSSH server version 4.3p2-9etch2 and rsync
> version 2.6.9-2etch2 on the remote server. The data is stored on local
> ext3 partitions.
>
> Relevant snippets of the configuration files:
>
> | $Conf{RsyncArgs} = [
> | '--numeric-ids',
> | '--perms',
> | '--owner',
> | '--group',
> | '--devices',
> | '--links',
> | '--times',
> | '--block-size=2048',
> | '--recursive',
> | ];
>
> And:
>
> | $Conf{RsyncClientCmd} = '$sshPath -4 -q -l backuppc $host nice -n 19
> /usr/bin/sudo $rsyncPath $argList+';
>
> What is it that I am overseeing?
Do you have a complete full run? Incrementals should not transfer
anything that was in the previous full, and subsequent fulls should only
do block-checksum comparisons over the old files which takes some time
but not a lot of bandwidth.
--
Les Mikesell
les AT futuresourece DOT com
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
|
|
|