lib/rbvmomi/vim/VirtualMachine.rb in rbvmomi-1.5.1 vs lib/rbvmomi/vim/VirtualMachine.rb in rbvmomi-1.6.0

@@ -8,6 +8,52 @@
   # Retrieve all virtual disk devices.
   # @return [Array] Array of virtual disk devices.
   def disks
     self.config.hardware.device.grep(RbVmomi::VIM::VirtualDisk)
   end
+  
+  # Get the IP of the guest, but only if it is not stale 
+  # @return [String] Current IP reported (as per VMware Tools) or nil
+  def guest_ip 
+    g = self.guest
+    if g.ipAddress && (g.toolsStatus == "toolsOk" || g.toolsStatus == "toolsOld")
+      g.ipAddress
+    else
+      nil
+    end
+  end  
+
+  # Add a layer of delta disks (redo logs) in front of every disk on the VM.
+  # This is similar to taking a snapshot and makes the VM a valid target for
+  # creating a linked clone.
+  #
+  # Background: The API for linked clones is quite strange. We can't create 
+  # a linked straight from any VM. The disks of the VM for which we can create a
+  # linked clone need to be read-only and thus VC demands that the VM we
+  # are cloning from uses delta-disks. Only then it will allow us to
+  # share the base disk.
+  def add_delta_disk_layer_on_all_disks
+    devices,  = self.collect 'config.hardware.device'
+    disks = devices.grep(RbVmomi::VIM::VirtualDisk)
+    # XXX: Should create a single reconfig spec instead of one per disk
+    disks.each do |disk|
+      spec = {
+        :deviceChange => [
+          {
+            :operation => :remove,
+            :device => disk
+          },
+          {
+            :operation => :add,
+            :fileOperation => :create,
+            :device => disk.dup.tap { |x|
+              x.backing = x.backing.dup
+              x.backing.fileName = "[#{disk.backing.datastore.name}]"
+              x.backing.parent = disk.backing
+            },
+          }
+        ]
+      }
+      self.ReconfigVM_Task(:spec => spec).wait_for_completion
+    end
+  end 
 end