Creating new project shows "Failed to create repository via gitlab-shell"

I recently changed the default git repo data directory to point to a CIFS share mounted on the server hosting gitlab. After making this change, reconfiguring and restarting via gitlab-ctl I am no longer able to create projects with the aforementioned error. I have checked the gitlab-shell logs:

I, [2016-02-23T22:32:54.770607 #2953]  INFO -- : Moving existing hooks directory and symlinking global hooks directory for /ice/gitlab_repos/repositories/amschoen/android-sandbox.git.
I, [2016-02-23T22:36:48.760426 #3566]  INFO -- : Adding project amschoen/android-sandbox.git at </ice/gitlab_repos/repositories/amschoen/android-sandbox.git>.
I, [2016-02-23T22:36:48.791573 #3566]  INFO -- : Moving existing hooks directory and symlinking global hooks directory for /ice/gitlab_repos/repositories/amschoen/android-sandbox.git.
I, [2016-02-23T22:42:50.757694 #4452]  INFO -- : Adding project amschoen/android.git at </ice/gitlab_repos/repositories/amschoen/android.git>.
I, [2016-02-23T22:42:50.789443 #4452]  INFO -- : Moving existing hooks directory and symlinking global hooks directory for /ice/gitlab_repos/repositories/amschoen/android.git.

No errors here.... checked the gitlab-rails production.log and got this:

Started POST "/projects" for 76.97.7.217 at 2016-02-23 22:42:50 -0500
Processing by ProjectsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "project"=>{"namespace_id"=>"4", "path"=>"android", "import_url"=>"", "description"=>"test", "visibility_level"=>"0"}}
Unable to save project: Failed to create repository
Completed 200 OK in 678ms (Views: 88.0ms | ActiveRecord: 8.6ms)

What's weird is the directories were created on the NAS share under repositories/, so I'm not sure what else to look for here. It can't be a permissions issue.

Gitlab version: 8.5.0 a513e09d, running on Ubuntu 14.04