Fix 'on_*=rename-restart' domain configuration option.

When setting e.g. 'on_crash=rename-restart' option in domain config
and crashing guest OS running in the domain, the new domain is
restarted with same name as renamed domain.

jfehlig4: # xm li
Name                                        ID   Mem VCPUs State Time(s)
Domain-0                                     0   1233   4  r----- 937.9
Domain-e64b12a0-0493-44d7-afde-55c776513426 21   384    1  ---c-  14.3
Domain-e64b12a0-0493-44d7-afde-55c776513426 22   384    1  r-----  7.3

This patch copies the domain info prior to setting new name and uuid
in the crashed domain info and uses the copied domain info to
construct the restarted domain.

Signed-off-by: Jim Fehlig <jfehlig@novell.com>

tools/python/xen/xend/XendDomainInfo.py

@@ -1393,9 +1393,10 @@ class XendDomainInfo:
 
         self._writeVm('xend/previous_restart_time', str(now))
 
+        new_dom_info = self.info
         try:
             if rename:
-                self._preserveForRestart()
+                new_dom_info = self._preserveForRestart()
             else:
                 self._unwatchVm()
                 self.destroyDomain()
@@ -1409,7 +1410,7 @@ class XendDomainInfo:
             new_dom = None
             try:
                 new_dom = XendDomain.instance().domain_create_from_dict(
-                    self.info)
+                    new_dom_info)
                 new_dom.waitForDevices()
                 new_dom.unpause()
                 rst_cnt = self._readVm('xend/restart_count')
@@ -1440,11 +1441,15 @@ class XendDomainInfo:
                  new_name, new_uuid)
         self._unwatchVm()
         self._releaseDevices()
+        new_dom_info = self.info.copy()
+        new_dom_info['name_label'] = self.info['name_label']
+        new_dom_info['uuid'] = self.info['uuid']
         self.info['name_label'] = new_name
         self.info['uuid'] = new_uuid
         self.vmpath = XS_VMROOT + new_uuid
         self._storeVmDetails()
         self._preserve()
+        return new_dom_info
 
 
     def _preserve(self):