I must be missing something on this whole compression, pooling, and checksum matter.
I found 2 files in my cpool that have the same checksum (one is _0) but 'cmp' to different values. However, when I zcat them, they have the same value. I thought that (lossless) compression was a 1-1 mapping? But here we seem to have two files that are identical (and thus have the same checksum) but compress to 2 *different* results? This would seem to be going against the grain of pooling where two identical files share the same pool entry. What am I missing? Does backuppc add some extra header information during compression? (I didn't see anything obvious in FileZIO.pm). Note all files were backed up with rsync/rsyncd. Is there anywhere (other than the code) where this is more fully documented? ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ 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/
