title: Vagrant error : Failed to mount folders in Linux guest
body: <p>I have some issues with Vagrant shared folders, my base system is Ubuntu 13.10 desktop.</p>
  
  <p>I do not understand why I have this error is something that is not right configured ? Is a NFS issue or Virtualbox Guest Additions ? I have tried with different many boxes but the same issue.</p>
  
  <pre><code>Failed to mount folders in Linux guest. This is usually because
      the "vboxsf" file system is not available. Please verify that
      the guest additions are properly installed in the guest and
      can work properly. The command attempted was:
  
      mount -t vboxsf -o uid=`id -u vagrant`,gid=`getent group vagrant | cut -d: -f3` /vagrant /vagrant
      mount -t vboxsf -o uid=`id -u vagrant`,gid=`id -g vagrant` /vagrant /vagrant
  </code></pre>
  
  <p>Here is the complete process after <code>vagrant up</code> :</p>
  
  <pre><code>$ vagrant up
  Bringing machine 'default' up with 'virtualbox' provider...
  ==&gt; default: Importing base box 'u131032'...
  ==&gt; default: Matching MAC address for NAT networking...
  ==&gt; default: Setting the name of the VM: vagrant_default_1396020504136_46442
  ==&gt; default: Clearing any previously set forwarded ports...
  ==&gt; default: Clearing any previously set network interfaces...
  ==&gt; default: Preparing network interfaces based on configuration...
      default: Adapter 1: nat
      default: Adapter 2: hostonly
  ==&gt; default: Forwarding ports...
      default: 22 =&gt; 2222 (adapter 1)
  ==&gt; default: Running 'pre-boot' VM customizations...
  ==&gt; default: Booting VM...
  ==&gt; default: Waiting for machine to boot. This may take a few minutes...
      default: SSH address: 127.0.0.1:2222
      default: SSH username: vagrant
      default: SSH auth method: private key
      default: Error: Connection timeout. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
      default: Error: Remote connection disconnect. Retrying...
  ==&gt; default: Machine booted and ready!
  GuestAdditions versions on your host (4.3.10) and guest (4.2.16) do not match.
   * Stopping VirtualBox Additions
     ...done.
  Reading package lists...
  Building dependency tree...
  Reading state information...
  The following packages were automatically installed and are no longer required:
    dkms libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libfontenc1
    libgl1-mesa-dri libglapi-mesa libice6 libllvm3.3 libpciaccess0 libpixman-1-0
    libsm6 libtxc-dxtn-s2tc0 libxaw7 libxcomposite1 libxdamage1 libxfixes3
    libxfont1 libxkbfile1 libxmu6 libxpm4 libxrandr2 libxrender1 libxt6
    x11-common x11-xkb-utils xfonts-base xfonts-encodings xfonts-utils
    xserver-common xserver-xorg-core
  Use 'apt-get autoremove' to remove them.
  The following packages will be REMOVED:
    virtualbox-guest-dkms* virtualbox-guest-utils* virtualbox-guest-x11*
  0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
  After this operation, 11.1 MB disk space will be freed.
  (Reading database ... 65615 files and directories currently installed.)
  Removing virtualbox-guest-dkms ...
  
  -------- Uninstall Beginning --------
  Module:  virtualbox-guest
  Version: 4.2.16
  Kernel:  3.11.0-18-generic (i686)
  -------------------------------------
  
  Status: Before uninstall, this module version was ACTIVE on this kernel.
  
  vboxguest.ko:
   - Uninstallation
     - Deleting from: /lib/modules/3.11.0-18-generic/updates/dkms/
   - Original module
     - No original module was found for this module on this kernel.
     - Use the dkms install command to reinstall any previous module version.
  
  
  vboxsf.ko:
   - Uninstallation
     - Deleting from: /lib/modules/3.11.0-18-generic/updates/dkms/
   - Original module
     - No original module was found for this module on this kernel.
     - Use the dkms install command to reinstall any previous module version.
  
  
  vboxvideo.ko:
   - Uninstallation
     - Deleting from: /lib/modules/3.11.0-18-generic/updates/dkms/
   - Original module
     - No original module was found for this module on this kernel.
     - Use the dkms install command to reinstall any previous module version.
  
  depmod....
  
  DKMS: uninstall completed.
  
  ------------------------------
  Deleting module version: 4.2.16
  completely from the DKMS tree.
  ------------------------------
  Done.
  Removing virtualbox-guest-x11 ...
  Purging configuration files for virtualbox-guest-x11 ...
  Removing virtualbox-guest-utils ...
  Purging configuration files for virtualbox-guest-utils ...
  Processing triggers for ureadahead ...
  Processing triggers for man-db ...
  Reading package lists...
  Building dependency tree...
  Reading state information...
  dkms is already the newest version.
  dkms set to manually installed.
  linux-headers-3.11.0-18-generic is already the newest version.
  linux-headers-3.11.0-18-generic set to manually installed.
  The following packages were automatically installed and are no longer required:
    libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libfontenc1 libgl1-mesa-dri
    libglapi-mesa libice6 libllvm3.3 libpciaccess0 libpixman-1-0 libsm6
    libtxc-dxtn-s2tc0 libxaw7 libxcomposite1 libxdamage1 libxfixes3 libxfont1
    libxkbfile1 libxmu6 libxpm4 libxrandr2 libxrender1 libxt6 x11-common
    x11-xkb-utils xfonts-base xfonts-encodings xfonts-utils xserver-common
    xserver-xorg-core
  Use 'apt-get autoremove' to remove them.
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  Copy iso file /usr/share/virtualbox/VBoxGuestAdditions.iso into the box /tmp/VBoxGuestAdditions.iso
  mount: block device /tmp/VBoxGuestAdditions.iso is write-protected, mounting read-only
  Installing Virtualbox Guest Additions 4.3.10 - guest version is 4.2.16
  Verifying archive integrity... All good.
  Uncompressing VirtualBox 4.3.10 Guest Additions for Linux............
  VirtualBox Guest Additions installer
  Copying additional installer modules ...
  Installing additional modules ...
  Removing existing VirtualBox DKMS kernel modules ...done.
  Removing existing VirtualBox non-DKMS kernel modules ...done.
  Building the VirtualBox Guest Additions kernel modules ...done.
  Doing non-kernel setup of the Guest Additions ...done.
  Starting the VirtualBox Guest Additions ...done.
  Installing the Window System drivers
  Could not find the X.Org or XFree86 Window System, skipping.
  An error occurred during installation of VirtualBox Guest Additions 4.3.10. Some functionality may not work as intended.
  In most cases it is OK that the "Window System drivers" installation failed.
  ==&gt; default: Checking for guest additions in VM...
  ==&gt; default: Setting hostname...
  ==&gt; default: Configuring and enabling network interfaces...
  ==&gt; default: Exporting NFS shared folders...
  ==&gt; default: Preparing to edit /etc/exports. Administrator privileges will be required...
  nfsd running
  sudo: /usr/bin/exportfs: command not found
  ==&gt; default: Mounting NFS shared folders...
  ==&gt; default: Mounting shared folders...
      default: /vagrant =&gt; /home/me/Documents/Work/project/vagrant
  Failed to mount folders in Linux guest. This is usually because
  the "vboxsf" file system is not available. Please verify that
  the guest additions are properly installed in the guest and
  can work properly. The command attempted was:
  
  mount -t vboxsf -o uid=`id -u vagrant`,gid=`getent group vagrant | cut -d: -f3` /vagrant /vagrant
  mount -t vboxsf -o uid=`id -u vagrant`,gid=`id -g vagrant` /vagrant /vagrant
  </code></pre>
  
  <p>My Vagrantfile configuration is :</p>
  
  <pre><code># -*- mode: ruby -*-
  # vi: set ft=ruby :
  
  # Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
  VAGRANTFILE_API_VERSION = "2"
  
  personalization = File.expand_path("../Personalization", __FILE__)
  load personalization
  
  Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
    config.vm.box = $base_box
    config.vm.box_url = $base_box_url
  
    config.vm.hostname = $vhost + ".dev"
  
    config.hostsupdater.aliases = ["api." + $vhost + ".dev", "mysql." + $vhost + ".dev"]
    config.hostsupdater.remove_on_suspend = true
  
    # set auto_update to ture to check the correct 
    # additions version when booting the machine
    config.vbguest.auto_update = true
    config.vbguest.auto_reboot = true
  
    config.vm.network :private_network, ip: $ip
  
    config.vm.synced_folder "../", "/srv/www/vhosts/" + $vhost + ".dev", type: "nfs"
  
    config.vm.provider :virtualbox do |v|
      v.customize ["modifyvm", :id, "--memory", 2048]
      v.customize ["modifyvm", :id, "--cpus", "1"]
      v.customize ["modifyvm", :id, "--cpuexecutioncap", "100"]
      v.customize ["modifyvm", :id, "--ioapic", "off"]
      v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
    end
  
    config.vm.provision "shell" do |s|
      s.path = "vagrant-bootstrap.sh"
      s.args = $vhost + " " + $mysql_password + " " + $application_database
    end
  end
  </code></pre>
  
  <p>The Personalization file is :</p>
  
  <pre><code># Name of the vhost to create
  $vhost = "project"
  
  # Use the Ubunut 32bit or 64bit
  $base_box_url = "http://cloud-images.ubuntu.com/vagrant/saucy/current/saucy-server-cloudimg-i386-vagrant-disk1.box"
  
  # VM IP
  $ip = "192.168.7.7"
  
  # Base box name
  $base_box = "u131032"
  
  # MySQL
  $mysql_password = "admin"
  $application_database = "project"
  </code></pre>
  
  <p>The following plugins are enabled in Vagrant:</p>
  
  <pre><code>$ vagrant plugin list
  vagrant-hostsupdater (0.0.11)
  vagrant-login (1.0.1, system)
  vagrant-share (1.0.1, system)
  vagrant-vbguest (0.10.0)
  </code></pre>