>1. How to properly do cross-platform, high-performance two-way synced folders between host and guest. Most providers only support one-way syncing. Virtualbox h

>1. How to properly do cross-platform, high-performance two-way synced folders between host and guest. Most providers only support one-way syncing. Virtualbox has shared folders, but their performance is pretty lousy and they have issues with relative symlinks. In fact, I still don't fully know what the correct setup is for a dev environment where the files are edited on the host and the guest immediately picks up on them... I set up a TCP server, one light process watches file changes and the other side reacts to it. (Rails). It was one of my silent victories that the entire company used, but I had to do because I was the guinnea pig on the vagrant migration.