Add lock around storage pool creation; closes #278

lib/vagrant-libvirt/action/handle_storage_pool.rb

@@ -6,12 +6,15 @@ module VagrantPlugins
       class HandleStoragePool
         include VagrantPlugins::ProviderLibvirt::Util::ErbTemplate
 
+        @@lock = Mutex.new
+
         def initialize(app, env)
           @logger = Log4r::Logger.new("vagrant_libvirt::action::handle_storage_pool")
           @app = app
         end
 
         def call(env)
+          @@lock.synchronize do
             # Get config options.
             config = env[:machine].provider_config
 
@@ -38,6 +41,7 @@ module VagrantPlugins
                 :error_message => e.message
             end
             raise Errors::NoStoragePool if !libvirt_pool
+          end
 
           @app.call(env)
         end