Harald Dunkel wrote:
Hi folks,
Are there any tricks known to let rsync operate on huge tar files?
I've got a local tar file (e.g. 2GByte uncompressed) that is rebuilt each night (with just some tiny changes, of course), and I would like to update the remote copies of this file without extracting the tar files into temporary directories.
Any ideas?
Regards
Harri
What distro is this? If it's Debian, gzip has an option called "--rsyncable". This makes changes to the uncompressed file local in the compressed file.
If this is not a Debian system check maybe the rsyncable patch was integrated there too. If not, compile your own version of gzip. In order to apply it to the tar file, you will have to not use the "z" option while creating the tar, but instead pipe it to gzip. Instead of doing "tar czf file.tgz dirs..." you do "tar cf - dirs... | gzip --rsyncable > file.tgz"
Enjoy
Shachar
-- Shachar Shemesh Lingnu Open Source Consulting ltd. http://www.lingnu.com/
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