Add a new disk to a VMWare vagrant box

gistfile1.rb

        config.vm.provider :vmware_fusion do |vm|

            vdiskmanager = '/Applications/VMware\ Fusion.app/Contents/Library/vmware-vdiskmanager'

            dir = "#{ENV['HOME']}/vagrant-additional-disk"

            unless File.directory?( dir )
                Dir.mkdir dir
            end

            file_to_disk = "#{dir}/var-lib-mysql.vmdk"

            unless File.exists?( file_to_disk )
                `#{vdiskmanager} -c -s 20GB -a lsilogic -t 1 #{file_to_disk}`
            end

            vm.vmx['scsi0:1.filename'] = file_to_disk
            vm.vmx['scsi0:1.present']  = 'TRUE'
            vm.vmx['scsi0:1.redo']     = ''

        end
        
        
        config.vm.provision :shell, :inline =>
            "set -x && " +
            "mkdir -p /var/lib/mysql && " +
            "grep -q sdb1 /proc/partitions || ( " +
                "echo ',,83' | sfdisk -q -D /dev/sdb && " +
                "mkfs.ext4 /dev/sdb1 " +
            ") && " +
            "grep -q sdb1 /etc/fstab || echo '/dev/sdb1 /var/lib/mysql ext4 defaults 0 0' >> /etc/fstab && " +
            "grep -q /var/lib/mysql /proc/mounts || mount /var/lib/mysql"