diff --git a/plugins/hypervisors/kvm/src/main/java/com/cloud/ha/KVMInvestigator.java b/plugins/hypervisors/kvm/src/main/java/com/cloud/ha/KVMInvestigator.java
index eb64f4bc439..ce9fbe6c232 100644
--- a/plugins/hypervisors/kvm/src/main/java/com/cloud/ha/KVMInvestigator.java
+++ b/plugins/hypervisors/kvm/src/main/java/com/cloud/ha/KVMInvestigator.java
@@ -38,6 +38,7 @@ import org.apache.cloudstack.storage.datastore.db.PrimaryDataStoreDao;
 import org.apache.cloudstack.storage.datastore.db.StoragePoolVO;
 
 import javax.inject.Inject;
+import java.util.Arrays;
 import java.util.List;
 
 public class KVMInvestigator extends AdapterBase implements Investigator {
@@ -81,7 +82,7 @@ public class KVMInvestigator extends AdapterBase implements Investigator {
             return haManager.getHostStatus(agent);
         }
 
-        List<StoragePoolVO> clusterPools = _storagePoolDao.listPoolsByCluster(agent.getClusterId());
+        List<StoragePoolVO> clusterPools = _storagePoolDao.findPoolsInClusters(Arrays.asList(agent.getClusterId()), null);
         boolean storageSupportHA = storageSupportHa(clusterPools);
         if (!storageSupportHA) {
             List<StoragePoolVO> zonePools = _storagePoolDao.findZoneWideStoragePoolsByHypervisor(agent.getDataCenterId(), agent.getHypervisorType());
@@ -89,7 +90,7 @@ public class KVMInvestigator extends AdapterBase implements Investigator {
         }
         if (!storageSupportHA) {
             logger.warn("Agent investigation was requested on host {}, but host does not support investigation because it has no NFS storage. Skipping investigation.", agent);
-            return Status.Disconnected;
+            return null;
         }
 
         Status hostStatus = null;
diff --git a/server/src/main/java/com/cloud/network/NetworkServiceImpl.java b/server/src/main/java/com/cloud/network/NetworkServiceImpl.java
index a5356375db7..faff178345a 100644
--- a/server/src/main/java/com/cloud/network/NetworkServiceImpl.java
+++ b/server/src/main/java/com/cloud/network/NetworkServiceImpl.java
@@ -1779,7 +1779,7 @@ public class NetworkServiceImpl extends ManagerBase implements NetworkService, C
         }
 
         Pair<Integer, Integer> interfaceMTUs = validateMtuConfig(publicMtu, privateMtu, zone.getId());
-        mtuCheckForVpcNetwork(vpcId, interfaceMTUs, publicMtu, privateMtu);
+        mtuCheckForVpcNetwork(vpcId, interfaceMTUs, publicMtu);
 
         Network associatedNetwork = null;
         if (associatedNetworkId != null) {
@@ -2067,7 +2067,7 @@ public class NetworkServiceImpl extends ManagerBase implements NetworkService, C
         return ntwkOff;
     }
 
-    protected void mtuCheckForVpcNetwork(Long vpcId, Pair<Integer, Integer> interfaceMTUs, Integer publicMtu, Integer privateMtu) {
+    protected void mtuCheckForVpcNetwork(Long vpcId, Pair<Integer, Integer> interfaceMTUs, Integer publicMtu) {
         if (vpcId != null && publicMtu != null) {
             VpcVO vpc = _vpcDao.findById(vpcId);
             if (vpc == null) {
@@ -2075,7 +2075,7 @@ public class NetworkServiceImpl extends ManagerBase implements NetworkService, C
             }
             logger.warn(String.format("VPC public MTU already set at VPC creation phase to: %s. Ignoring public MTU " +
                     "passed during VPC network tier creation ", vpc.getPublicMtu()));
-            interfaceMTUs.set(vpc.getPublicMtu(), privateMtu);
+            interfaceMTUs.set(vpc.getPublicMtu(), interfaceMTUs.second());
         }
     }
 
diff --git a/server/src/test/java/com/cloud/network/NetworkServiceImplTest.java b/server/src/test/java/com/cloud/network/NetworkServiceImplTest.java
index c14ec2e9335..27425e96155 100644
--- a/server/src/test/java/com/cloud/network/NetworkServiceImplTest.java
+++ b/server/src/test/java/com/cloud/network/NetworkServiceImplTest.java
@@ -555,7 +555,7 @@ public class NetworkServiceImplTest {
         Mockito.when(vpcVO.getPublicMtu()).thenReturn(vpcMtu);
 
         Pair<Integer, Integer> updatedMtus = service.validateMtuConfig(publicMtu, privateMtu, zoneId);
-        service.mtuCheckForVpcNetwork(vpcId, updatedMtus, publicMtu, privateMtu);
+        service.mtuCheckForVpcNetwork(vpcId, updatedMtus, publicMtu);
         Assert.assertEquals(vpcMtu, updatedMtus.first());
         Assert.assertEquals(privateMtu, updatedMtus.second());
     }