Rich writes: > I don't think BackupPC will update the pool with the smaller file even > though it knows the source was identical, and some tests I just did > backing up /tmp seem to agree. Once compressed and copied into the > pool, the file is not updated with future higher compressed copies. > Does anyone know something otherwise?
You're right. Each file in the pool is only compressed once, at the current compression level. Matching pool files is done by comparing uncompressed file contents, not compressed files. It's done this way because compression is typically a lot more expensive than uncompressing. Changing the compression level will only apply to new additions to the pool. To benchmark compression ratios you could remove all the files in the pool between runs, but of course you should only do that on a test setup, not a production installation. Craig ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
