Add resume state on host boot function to vmware Hyper.

Fix bug #1183426

Change-Id: Ia4a0cce285aac01c59286f4899cbac0a021039c4

2 files changed, 29 insertions, 0 deletions

diff --git a/nova/virt/vmwareapi/driver.py b/nova/virt/vmwareapi/driver.py
index 8389b2c3d..ef06d447a 100755
--- a/nova/virt/vmwareapi/driver.py
+++ b/nova/virt/vmwareapi/driver.py
@@ -229,6 +229,28 @@ class VMwareESXDriver(driver.ComputeDriver):
         """Power on the specified instance."""
         self._vmops._power_on(instance)
 
+    def resume_state_on_host_boot(self, context, instance, network_info,
+                                  block_device_info=None):
+        """resume guest state when a host is booted."""
+        # Check if the instance is running already and avoid doing
+        # anything if it is.
+        instances = self.list_instances()
+        if instance['uuid'] not in instances:
+            LOG.warn(_('Instance cannot be found in host, or in an unknown'
+                'state.'), instance=instance)
+        else:
+            state = vm_util.get_vm_state_from_name(self._session,
+                instance['uuid'])
+            ignored_states = ['poweredon', 'suspended']
+
+            if state.lower() in ignored_states:
+                return
+        # Instance is not up and could be in an unknown state.
+        # Be as absolute as possible about getting it back into
+        # a known and running state.
+        self.reboot(context, instance, network_info, 'hard',
+            block_device_info)
+
     def poll_rebooting_instances(self, timeout, instances):
         """Poll for rebooting instances."""
         self._vmops.poll_rebooting_instances(timeout, instances)
diff --git a/nova/virt/vmwareapi/vm_util.py b/nova/virt/vmwareapi/vm_util.py
index d8e063cad..94da5c677 100644
--- a/nova/virt/vmwareapi/vm_util.py
+++ b/nova/virt/vmwareapi/vm_util.py
@@ -632,6 +632,13 @@ def get_host_name_from_host_ref(host_ref):
         return p.val
 
 
+def get_vm_state_from_name(session, vm_name):
+    vm_ref = get_vm_ref_from_name(session, vm_name)
+    vm_state = session._call_method(vim_util, "get_dynamic_property",
+                vm_ref, "VirtualMachine", "runtime.powerState")
+    return vm_state
+
+
 def get_cluster_ref_from_name(session, cluster_name):
     """Get reference to the cluster with the name specified."""
     cls = session._call_method(vim_util, "get_objects",