I have the following 2 source folders:
- A is the base folder, its size is 1GB.
- B is the change folder, its size is 100K. B has the same folder structure with A, but files only exist when it needs to be different with A.
What I want is "A + B = C". I clone A folder to C folder with rsync first. And then I use rsync again to overwrite the files in C folder from B folder.
The problem is that it still takes too much time even if the C folder exists. Any solution to fasten this process?