I have this script that is supposed to pack all my stuff into a single tarball once a week. It seems to work pretty good and get the job done. At least that was what I thought when I set it up.
tar cvpzf $HOST_DIR/backup.tar.gz / --exclude="/sys/*" --exclude="/mnt/*" --exclude="/proc/*" --exclude="/lost+found" --exclude="/media/*" --exclude="/root/toril/*" --exclude-caches
Now I noticed that according to the tarballs size it cannot be my whole file system anymore. Rather a delta to the last compression. And indeed, when I take a look inside them they do not contain the complete file system anymore.
-rw------- 1 root root 1962344 May 10 05:09 backup.tar.gz
-rw------- 1 root root 493408458 May 7 11:49 backup_old.tar.gz
However, I could not find a switch deactivating this kind of behavior. Can anyone tell me what I might be missing?