Improved logging and such around SSH

lib/vagrant/util/retryable.rb

@@ -1,3 +1,5 @@
+require "log4r"
+
 module Vagrant
   module Util
     module Retryable
@@ -8,12 +10,16 @@ module Vagrant
       # This code is adapted slightly from the following blog post:
       # http://blog.codefront.net/2008/01/14/retrying-code-blocks-in-ruby-on-exceptions-whatever/
       def retryable(opts=nil)
+        logger = nil
         opts   = { :tries => 1, :on => Exception }.merge(opts || {})
 
         begin
           return yield
-        rescue *opts[:on]
+        rescue *opts[:on] => e
           if (opts[:tries] -= 1) > 0
+            logger = Log4r::Logger.new("vagrant::util::retryable")
+            logger.info("Retryable exception raised: #{e.inspect}")
+
             sleep opts[:sleep].to_f if opts[:sleep]
             retry
           end

plugins/communicators/ssh/communicator.rb

@@ -163,8 +163,12 @@ module VagrantPlugins
             Timeout::Error
           ]
 
-          connection = retryable(:tries => @machine.config.ssh.max_tries, :on => exceptions) do
-            Timeout.timeout(@machine.config.ssh.timeout) do
+          retries = @machine.config.ssh.max_tries
+          timeout = @machine.config.ssh.timeout
+
+          @logger.info("Attempting SSH. Retries: #{retries}. Timeout: #{timeout}")
+          connection = retryable(:tries => retries, :on => exceptions) do
+            Timeout.timeout(timeout) do
               @logger.info("Attempting to connect to SSH: #{ssh_info[:host]}:#{ssh_info[:port]}")
               Net::SSH.start(ssh_info[:host], ssh_info[:username], opts)
             end