To be clear, BackupPC needs lower-level access to the rsync protocol in order to interface with the pool correctly. File::RsyncP was written specifically to support BackupPC, and to current knowledge is the only program that uses it.
In the near future, I plan on updating File::RsyncP so that BackupPC can cut down on memory usage. However, it is important to note that to get these advantages, both machines must have rsync v3.0 or higher. The transfer will still work otherwise, but the client and server will agree to use the lowest version between the client and server.
The incremental-recursion algorithm would be a huge win for a lot of our
backups, in particular for doing backups of larger mail servers that have
MailDir as the store. Is there any plan for migrating that in?
David.
-----
On Sat, 7 Jun 2008, Hendrik Friedel wrote:
> Hello,
>
> Has anyone tried out the enhancements of rsync 3.0 yet?
>
> "The 3.0.0 version number is such a large bump up from 2.6.9 due to the
> addition of an incremental recursion scan (which helps a lot with large
> transfers)"
>
> " - A new incremental-recursion algorithm is now used when rsync is
> talking
> to another 3.x version. This starts the transfer going more quickly
> (before all the files have been found), and requires much less memory.
> See the --recursive option in the manpage for some restrictions.
>
>
> - The default --delete algorithm is now --delete-during when talking to
> a
> 3.x rsync. This is a faster scan than using --delete-before (which is
> the default when talking to older rsync versions), and is compatible
> with
> the new incremental recursion mode."
>
> This might improve the performance in conjunction with BackupPC
>
> Has anyone used this windows-binary of rsync:
> http://www.itefix.no/phpws/index.php?module=pagemaster&PAGE_user_op=view_pag
> e&PAGE_id=6&MMN_position=23:23
>
> It is open source and is linked on the Rsync website.
>
> Greetings,
> Hendrik
>
>
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