Catch network lookup errors if a domain is dying. (Hiroyuki Kaguchi)

src/virtManager/connection.py

@@ -584,6 +584,7 @@ class vmmConnection(gobject.GObject):
             logging.warn("Unable to list inactive networks")
 
         for name in newActiveNetNames:
+            try:
                 net = self.vmm.networkLookupByName(name)
                 uuid = self.uuidstr(net.UUID())
                 if not oldNets.has_key(uuid):
@@ -596,7 +597,11 @@ class vmmConnection(gobject.GObject):
                         self.nets[uuid].set_active(True)
                         startNets[uuid] = self.nets[uuid]
                     del oldNets[uuid]
+            except libvirt.libvirtError:
+                logging.warn("Couldn't fetch active network name '" + name + "'")
+
         for name in newInactiveNetNames:
+            try:
                 net = self.vmm.networkLookupByName(name)
                 uuid = self.uuidstr(net.UUID())
                 if not oldNets.has_key(uuid):
@@ -608,6 +613,8 @@ class vmmConnection(gobject.GObject):
                         self.nets[uuid].set_active(False)
                         stopNets[uuid] = self.nets[uuid]
                     del oldNets[uuid]
+            except libvirt.libvirtError:
+                logging.warn("Couldn't fetch inactive network name '" + name + "'")
 
         oldActiveIDs = {}
         oldInactiveNames = {}
@@ -626,7 +633,12 @@ class vmmConnection(gobject.GObject):
         # Now we can clear the list of actives from the last time through
         self.activeUUIDs = []
 
+        newActiveIDs = []
+        try:
             newActiveIDs = self.vmm.listDomainsID()
+        except:
+            logging.warn("Unable to list active domains")
+
         newInactiveNames = []
         try:
             newInactiveNames = self.vmm.listDefinedDomains()
@@ -656,6 +668,7 @@ class vmmConnection(gobject.GObject):
                     # May be a new VM, we have no choice but
                     # to create the wrapper so we can see
                     # if its a previously inactive domain.
+                    try:
                         vm = self.vmm.lookupByID(id)
                         uuid = self.uuidstr(vm.UUID())
                         maybeNewUUIDs[uuid] = vm
@@ -663,6 +676,8 @@ class vmmConnection(gobject.GObject):
                         startedUUIDs.append(uuid)
                         #print "Maybe new active " + str(maybeNewUUIDs[uuid].get_name()) + " " + uuid
                         self.activeUUIDs.append(uuid)
+                    except libvirt.libvirtError:
+                        logging.debug("Couldn't fetch domain id " + str(id) + "; it probably went away")
 
         # Filter out inactive domains which haven't changed
         if newInactiveNames != None:
@@ -741,7 +756,10 @@ class vmmConnection(gobject.GObject):
 
         # Finally, we sample each domain
         now = time()
+        try:
             self.hostinfo = self.vmm.getInfo()
+        except:
+            logging.warn("Unable to get host information")
 
         updateVMs = self.vms
         if noStatsUpdate: