7-Zip is an awesome tool, but sometimes it works in a strange way. Consider the following directory
foo <DIR> bar <DIR> baz <DIR> empty <DIR> -- this directory is empty by intention
Now when executing the following commands:
>D: >cd D:\dir >7z a -r -bb3 -mx9 -mmt -ms empty.7z empty 7-Zip  16.04 : Copyright (c) 1999-2016 Igor Pavlov : 2016-10-04 Scanning the drive: 0M Scan foo\bar\baz
For some reason 7-Zip scans directories that are not relevant to the compression process. This is relevant to 7-Zip  16.04, but it worked like that in much older versions. Not sure if it's also reproducible on Linux.
How do I disable the scan and make 7-Zip analyze the specified directory recursively only?
Igor Pavlov, the creator of 7-Zip, has kindly clarified to me how
7z works for such a scenario.