How I resolved issues with my vagrant/Virtualbox not syncing folders from my host filesystem into my guest filesystem.
After updating my Virtualbox installation I was experiencing issues with vagrant not syncing my shared folders from my Mac OS X host to the guest filesystem (Ubuntu). This document logs some of the steps that I used to fix that problem.
After booting my vagrant VM, none of the folders I had specified in the directory were syncing.
Boot the VM using the VirtualBox application. This loads into the CLI mode
Install VirtualBox guest additions via the CLI - sudo apt-get install dkms virtualbox-guest-utils
Power off the VM
Edit my Vagrantfile and update the following directive:
Before:
config.vm.synced_folder "~/chirpify", "/var/www"
After:
config.vm.synced_folder "~/chirpify", "/var/www", :mount_options => ["dmode=777","fmode=777"]