Host Windows - Guest ubuntu - rsync folder -- pathname issues

[Aditya Dhulipala]

Hi,

My project is on a Windows machine on L;\projectname

I'd like to sync this with my Ubuntu Virtualbox vm through vagrant using rsync

my vagrantfile has this line 

config.vm.synced_folder ".", "/vagrant", type: "rsync", rsync__exclude: [".git/", "db/test.sqlite3"]

but this causes the following error:

...

rsync: change_dir "/l/sharedrive" failed: No such file or directory (2)

....

How do I tell rsync of vagrant that the source folder is L:\sharedrive, not /l/sharedrive?

I'm using the rsync that comes with cygwin... Is there anyway I can tell any of the player above that the path names should be translated between windows and posix styles?

Thanks!