re: RSync with File Compression

[Kevin Day]

Drew-

There is a build of GZip
 (under Debian I think) that has an rsync
 friendly option. I have posted a patch
 for zlib to this newsgroup with code that
 makes zlib rsync friendly (along with some
 extra optimizations over the GZip implementation).

Take a look in the list
 archives and you'll find the patch.

Cheers!

- K








Original Message




 Hello,Rsync is great, thanks to all
 who work on it. Does anyone have any
 goodstrategies for keeping the backups
 on the remote side compressed on disk?I'm
 under the impression that gzipping the files
 would not work as theywould not be available
 to rsync in the uncompressed state for subsequentbackups.
 A compressed filesystem would be prefect,
 but the onlyreferences I could find was
 for a non-production quality kernel mod forext2
 (I'm running ext3). Has anyone else
 tackled this issue?Thanks,Drew--
 To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsyncBefore
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Re: RSync with File Compression

[Wayne Davison]

On Wed, Jun 01, 2005 at 01:20:45PM -0700, Kevin Day wrote:
 There is a build of GZip (under Debian I think) that has an rsync
 friendly option.

This is useful if the files are compressed at the source.  If you want
only the destination side to be compressed, you'll need something beyond
a stock rsync.  One option that I'm aware of is the BackupPC program
which is referenced on the resources page of rsync's website.

 I have posted a patch for zlib to this newsgroup with code that makes
 zlib rsync friendly (along with some extra optimizations over the GZip
 implementation).

The patch is in the patches dir of the rsync distribution under the
name gzip-rsyncable-checksum.diff.

..wayne..
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