Get cwRsync Working With Vagrant On Windows 10

Getting cwRsync to work with Vagrant on Windows 10 is a pain.

This tutorial is for people who have:

Reading comprehension 101:

cwRsync is a standalone version of rsync for Windows that doesn’t require Cygwin to be installed. I don’t have Cygwin installed because Git For Windows includes Git Bash and this is “good enough.” With a regular standalone cwRsync installation Cygwin will never be in the PATH and Vagrant will never add the required /cygdrive prefix.

Howto fix:

Add C:Program Files (x86)cwRsync (or wherever you installed) to your path. To avoid problems make sure this string is placed before C:Program FilesGitcmd and/or C:Program FilesGitmingw64bin;C:Program FilesGitusrbin

Add cwRsync to your path.
Add “C:Program Files (x86)cwRsync” to your path.

Add the following system variable: CYGWIN = nodosfilewarning

CYGWIN = nodosfilewarning
Add “CYGWIN = nodosfilewarning” as a system variable.

Edit (hack!)C:HashiCorpVagrantembeddedgemsgemsvagrant-1.7.4pluginssynced_foldersrsynchelper.rb

Change line ~43 from:

hostpath = Vagrant::Util::Platform.cygwin_path(hostpath)

To:

hostpath = "/cygdrive" + Vagrant::Util::Platform.cygwin_path(hostpath)
Edit rsynchelper.rb
Edit Vagrant’s rsynchelper.rb file

Restart your shells to apply changes. Fiddle with your Vagrantfile. Tada!

Troubleshooting:

Git for Windows is based on MinGw. cwRsync is based on Cygwin. You cannot run Vagrant & cwRsync from Git Bash because cwRsync includes it’s own incompatible SSH binary. If you try you will get the following error:

rsync error: error in rsync protocol data stream (code 12) at io.c(226) [Receive r=3.1.0]

Instead, when launching Vagrant use Microsoft PowerShell.

Sources:

[1] http://auxmem.com/2010/03/17/how-to-squelch-the-cygwin-dos-path-warning/
[2] https://github.com/mitchellh/vagrant/issues/3230
[3] https://github.com/mitchellh/vagrant/issues/4586

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