Merge branch '4.19' into 4.20

api/src/main/java/org/apache/cloudstack/api/response/NetworkResponse.java

@@ -28,12 +28,11 @@ import org.apache.cloudstack.api.BaseResponseWithAssociatedNetwork;
 import org.apache.cloudstack.api.EntityReference;
 
 import com.cloud.network.Network;
-import com.cloud.projects.ProjectAccount;
 import com.cloud.serializer.Param;
 import com.google.gson.annotations.SerializedName;
 
 @SuppressWarnings("unused")
-@EntityReference(value = {Network.class, ProjectAccount.class})
+@EntityReference(value = {Network.class})
 public class NetworkResponse extends BaseResponseWithAssociatedNetwork implements ControlledEntityResponse, SetResourceIconResponse {
 
     @SerializedName(ApiConstants.ID)

engine/storage/volume/src/main/java/org/apache/cloudstack/storage/datastore/lifecycle/BasePrimaryDataStoreLifeCycleImpl.java

@@ -22,14 +22,16 @@ import java.util.List;
 
 import javax.inject.Inject;
 
-import com.cloud.dc.dao.DataCenterDao;
 import org.apache.cloudstack.engine.subsystem.api.storage.ClusterScope;
 import org.apache.cloudstack.engine.subsystem.api.storage.DataStore;
+import org.apache.cloudstack.storage.datastore.db.PrimaryDataStoreDao;
+import org.apache.cloudstack.storage.datastore.db.StoragePoolVO;
 import org.apache.cloudstack.storage.volume.datastore.PrimaryDataStoreHelper;
 
 import com.cloud.agent.AgentManager;
 import com.cloud.agent.api.Answer;
 import com.cloud.agent.api.DeleteStoragePoolCommand;
+import com.cloud.dc.dao.DataCenterDao;
 import com.cloud.host.HostVO;
 import com.cloud.host.dao.HostDao;
 import com.cloud.hypervisor.Hypervisor.HypervisorType;
@@ -37,8 +39,12 @@ import com.cloud.resource.ResourceManager;
 import com.cloud.storage.StorageManager;
 import com.cloud.storage.StoragePool;
 import com.cloud.storage.StoragePoolHostVO;
+import com.cloud.storage.VMTemplateStoragePoolVO;
+import com.cloud.storage.VMTemplateStorageResourceAssoc;
 import com.cloud.storage.dao.StoragePoolHostDao;
+import com.cloud.template.TemplateManager;
 import com.cloud.utils.Pair;
+
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -59,6 +65,10 @@ public class BasePrimaryDataStoreLifeCycleImpl {
     protected DataCenterDao zoneDao;
     @Inject
     protected StoragePoolHostDao storagePoolHostDao;
+    @Inject
+    private PrimaryDataStoreDao primaryDataStoreDao;
+    @Inject
+    private TemplateManager templateMgr;
 
     private List<HostVO> getPoolHostsList(ClusterScope clusterScope, HypervisorType hypervisorType) {
         List<HostVO> hosts;
@@ -81,7 +91,7 @@ public class BasePrimaryDataStoreLifeCycleImpl {
                 try {
                     storageMgr.connectHostToSharedPool(host, store.getId());
                 } catch (Exception e) {
-                    logger.warn("Unable to establish a connection between " + host + " and " + store, e);
+                    logger.warn("Unable to establish a connection between {} and {}", host, store, e);
                 }
             }
         }
@@ -99,7 +109,7 @@ public class BasePrimaryDataStoreLifeCycleImpl {
 
                 if (answer != null) {
                     if (!answer.getResult()) {
-                        logger.debug("Failed to delete storage pool: " + answer.getResult());
+                        logger.debug("Failed to delete storage pool: {}", answer.getResult());
                     } else if (HypervisorType.KVM != hypervisorType) {
                         break;
                     }
@@ -108,4 +118,42 @@ public class BasePrimaryDataStoreLifeCycleImpl {
         }
         dataStoreHelper.switchToCluster(store, clusterScope);
     }
+
+    private void evictTemplates(StoragePoolVO storagePoolVO) {
+        List<VMTemplateStoragePoolVO> unusedTemplatesInPool = templateMgr.getUnusedTemplatesInPool(storagePoolVO);
+        for (VMTemplateStoragePoolVO templatePoolVO : unusedTemplatesInPool) {
+            if (templatePoolVO.getDownloadState() == VMTemplateStorageResourceAssoc.Status.DOWNLOADED) {
+                templateMgr.evictTemplateFromStoragePool(templatePoolVO);
+            }
+        }
+    }
+
+    private void deleteAgentStoragePools(StoragePool storagePool) {
+        List<StoragePoolHostVO> poolHostVOs = storagePoolHostDao.listByPoolId(storagePool.getId());
+        for (StoragePoolHostVO poolHostVO : poolHostVOs) {
+            DeleteStoragePoolCommand deleteStoragePoolCommand = new DeleteStoragePoolCommand(storagePool);
+            final Answer answer = agentMgr.easySend(poolHostVO.getHostId(), deleteStoragePoolCommand);
+            if (answer != null && answer.getResult()) {
+                logger.info("Successfully deleted storage pool: {} from host: {}", storagePool.getId(), poolHostVO.getHostId());
+            } else {
+                if (answer != null) {
+                    logger.error("Failed to delete storage pool: {} from host: {} , result: {}", storagePool.getId(), poolHostVO.getHostId(), answer.getResult());
+                } else {
+                    logger.error("Failed to delete storage pool: {} from host: {}", storagePool.getId(), poolHostVO.getHostId());
+                }
+            }
+        }
+    }
+
+    protected boolean cleanupDatastore(DataStore store) {
+        StoragePool storagePool = (StoragePool)store;
+        StoragePoolVO storagePoolVO = primaryDataStoreDao.findById(storagePool.getId());
+        if (storagePoolVO == null) {
+            return false;
+        }
+
+        evictTemplates(storagePoolVO);
+        deleteAgentStoragePools(storagePool);
+        return true;
+    }
 }

plugins/storage/volume/linstor/CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to Linstor CloudStack plugin will be documented in this file
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2025-03-13]
+
+### Fixed
+
+- Implemented missing delete datastore, to correctly cleanup on datastore removal
+
 ## [2025-02-21]
 
 ### Fixed

plugins/storage/volume/linstor/src/main/java/org/apache/cloudstack/storage/datastore/lifecycle/LinstorPrimaryDataStoreLifeCycleImpl.java

@@ -286,8 +286,11 @@ public class LinstorPrimaryDataStoreLifeCycleImpl extends BasePrimaryDataStoreLi
 
     @Override
     public boolean deleteDataStore(DataStore store) {
+        if (cleanupDatastore(store)) {
             return dataStoreHelper.deletePrimaryDataStore(store);
         }
+        return false;
+    }
 
     /* (non-Javadoc)
      * @see org.apache.cloudstack.engine.subsystem.api.storage.DataStoreLifeCycle#migrateToObjectStore(org.apache.cloudstack.engine.subsystem.api.storage.DataStore)

plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/lifecycle/ScaleIOPrimaryDataStoreLifeCycle.java

@@ -18,7 +18,6 @@
  */
 package org.apache.cloudstack.storage.datastore.lifecycle;
 
-import java.io.UnsupportedEncodingException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URLDecoder;
@@ -30,6 +29,7 @@ import java.util.UUID;
 
 import javax.inject.Inject;
 
+import com.cloud.utils.StringUtils;
 import org.apache.cloudstack.engine.subsystem.api.storage.ClusterScope;
 import org.apache.cloudstack.engine.subsystem.api.storage.DataStore;
 import org.apache.cloudstack.engine.subsystem.api.storage.HostScope;
@@ -48,8 +48,6 @@ import org.apache.cloudstack.storage.volume.datastore.PrimaryDataStoreHelper;
 import org.apache.commons.collections.CollectionUtils;
 
 import com.cloud.agent.AgentManager;
-import com.cloud.agent.api.Answer;
-import com.cloud.agent.api.DeleteStoragePoolCommand;
 import com.cloud.agent.api.StoragePoolInfo;
 import com.cloud.capacity.CapacityManager;
 import com.cloud.dc.ClusterVO;
@@ -63,9 +61,6 @@ import com.cloud.storage.Storage;
 import com.cloud.storage.StorageManager;
 import com.cloud.storage.StoragePool;
 import com.cloud.storage.StoragePoolAutomation;
-import com.cloud.storage.StoragePoolHostVO;
-import com.cloud.storage.VMTemplateStoragePoolVO;
-import com.cloud.storage.VMTemplateStorageResourceAssoc;
 import com.cloud.storage.dao.StoragePoolHostDao;
 import com.cloud.template.TemplateManager;
 import com.cloud.utils.UriUtils;
@@ -111,7 +106,7 @@ public class ScaleIOPrimaryDataStoreLifeCycle extends BasePrimaryDataStoreLifeCy
             List<org.apache.cloudstack.storage.datastore.api.StoragePool> storagePools = client.listStoragePools();
             for (org.apache.cloudstack.storage.datastore.api.StoragePool pool : storagePools) {
                 if (pool.getName().equals(storagePoolName)) {
-                    logger.info("Found PowerFlex storage pool: " + storagePoolName);
+                    logger.info("Found PowerFlex storage pool: {}", storagePoolName);
                     final org.apache.cloudstack.storage.datastore.api.StoragePoolStatistics poolStatistics = client.getStoragePoolStatistics(pool.getId());
                     pool.setStatistics(poolStatistics);
 
@@ -164,7 +159,7 @@ public class ScaleIOPrimaryDataStoreLifeCycle extends BasePrimaryDataStoreLifeCy
             throw new CloudRuntimeException("Cluster Id must also be specified when the Pod Id is specified for Cluster-wide primary storage.");
         }
 
-        URI uri = null;
+        URI uri;
         try {
             uri = new URI(UriUtils.encodeURIComponent(url));
             if (uri.getScheme() == null || !uri.getScheme().equalsIgnoreCase("powerflex")) {
@@ -174,12 +169,8 @@ public class ScaleIOPrimaryDataStoreLifeCycle extends BasePrimaryDataStoreLifeCy
             throw new InvalidParameterValueException(url + " is not a valid uri");
         }
 
-        String storagePoolName = null;
+        String storagePoolName;
-        try {
+        storagePoolName = URLDecoder.decode(uri.getPath(), StringUtils.getPreferredCharset());
-            storagePoolName = URLDecoder.decode(uri.getPath(), "UTF-8");
-        } catch (UnsupportedEncodingException e) {
-            logger.error("[ignored] we are on a platform not supporting \"UTF-8\"!?!", e);
-        }
         if (storagePoolName == null) { // if decoding fails, use getPath() anyway
             storagePoolName = uri.getPath();
         }
@@ -187,7 +178,7 @@ public class ScaleIOPrimaryDataStoreLifeCycle extends BasePrimaryDataStoreLifeCy
 
         final String storageHost = uri.getHost();
         final int port = uri.getPort();
-        String gatewayApiURL = null;
+        String gatewayApiURL;
         if (port == -1) {
             gatewayApiURL = String.format("https://%s/api", storageHost);
         } else {
@@ -321,38 +312,12 @@ public class ScaleIOPrimaryDataStoreLifeCycle extends BasePrimaryDataStoreLifeCy
 
     @Override
     public boolean deleteDataStore(DataStore dataStore) {
-        StoragePool storagePool = (StoragePool)dataStore;
+        if (cleanupDatastore(dataStore)) {
-        StoragePoolVO storagePoolVO = primaryDataStoreDao.findById(storagePool.getId());
-        if (storagePoolVO == null) {
-            return false;
-        }
-
-        List<VMTemplateStoragePoolVO> unusedTemplatesInPool = templateMgr.getUnusedTemplatesInPool(storagePoolVO);
-        for (VMTemplateStoragePoolVO templatePoolVO : unusedTemplatesInPool) {
-            if (templatePoolVO.getDownloadState() == VMTemplateStorageResourceAssoc.Status.DOWNLOADED) {
-                templateMgr.evictTemplateFromStoragePool(templatePoolVO);
-            }
-        }
-
-        List<StoragePoolHostVO> poolHostVOs = storagePoolHostDao.listByPoolId(dataStore.getId());
-        for (StoragePoolHostVO poolHostVO : poolHostVOs) {
-            DeleteStoragePoolCommand deleteStoragePoolCommand = new DeleteStoragePoolCommand(storagePool);
-            final Answer answer = agentMgr.easySend(poolHostVO.getHostId(), deleteStoragePoolCommand);
-            if (answer != null && answer.getResult()) {
-                logger.info("Successfully deleted storage pool: {} from host: {}", storagePool, poolHostVO.getHostId());
-            } else {
-                if (answer != null) {
-                    logger.error("Failed to delete storage pool: {} from host: {} , result: {}", storagePool, poolHostVO.getHostId(), answer.getResult());
-                } else {
-                    logger.error("Failed to delete storage pool: {} from host: {}", storagePool, poolHostVO.getHostId());
-                }
-            }
-        }
-
             ScaleIOGatewayClientConnectionPool.getInstance().removeClient(dataStore);
-
             return dataStoreHelper.deletePrimaryDataStore(dataStore);
         }
+        return false;
+    }
 
     @Override
     public boolean migrateToObjectStore(DataStore store) {

scripts/storage/secondary/setup-sysvm-tmplt

@@ -99,7 +99,7 @@ if [[ -f $destdir/template.properties ]]; then
   failed 2 "Data already exists at destination $destdir"
 fi
 
-destfiles=$(find $destdir -name \*.$ext)
+destfiles=$(sudo find $destdir -name \*.$ext)
 if [[ "$destfiles" != "" ]]; then
   failed 2 "Data already exists at destination $destdir"
 fi
@@ -108,12 +108,12 @@ tmpfolder=/tmp/cloud/templates/
 mkdir -p $tmpfolder
 tmplfile=$tmpfolder/$localfile
 
-sudo touch $tmplfile
+touch $tmplfile
 if [[ $? -ne 0 ]]; then
   failed 2 "Failed to create temporary file in directory $tmpfolder -- is it read-only or full?\n"
 fi
 
-destcap=$(df -P $destdir | awk '{print $4}' | tail -1 )
+destcap=$(sudo df -P $destdir | awk '{print $4}' | tail -1 )
 [ $destcap -lt $DISKSPACE ] && echo "Insufficient free disk space for target folder $destdir: avail=${destcap}k req=${DISKSPACE}k" && failed 4
 
 localcap=$(df -P $tmpfolder | awk '{print $4}' | tail -1 )
@@ -146,9 +146,9 @@ fi
 
 
 tmpltfile=$destdir/$localfile
-tmpltsize=$(ls -l $tmpltfile | awk -F" " '{print $5}')
+tmpltsize=$(sudo ls -l $tmpltfile | awk -F" " '{print $5}')
 if [[ "$ext" == "qcow2" ]]; then
-  vrtmpltsize=$($qemuimgcmd info $tmpltfile | grep -i 'virtual size' | sed -ne 's/.*(\([0-9]*\).*/\1/p' | xargs)
+  vrtmpltsize=$(sudo $qemuimgcmd info $tmpltfile | grep -i 'virtual size' | sed -ne 's/.*(\([0-9]*\).*/\1/p' | xargs)
 else
   vrtmpltsize=$tmpltsize
 fi

server/conf/cloudstack-sudoers.in

@@ -18,7 +18,7 @@
 # The CloudStack management server needs sudo permissions
 # without a password.
 
-Cmnd_Alias CLOUDSTACK = /bin/mkdir, /bin/mount, /bin/umount, /bin/cp, /bin/chmod, /usr/bin/keytool, /bin/keytool, /bin/touch
+Cmnd_Alias CLOUDSTACK = /bin/mkdir, /bin/mount, /bin/umount, /bin/cp, /bin/chmod, /usr/bin/keytool, /bin/keytool, /bin/touch, /bin/find, /bin/df, /bin/ls, /bin/qemu-img
 
 Defaults:@MSUSER@ !requiretty
 

server/src/main/java/com/cloud/network/router/NetworkHelperImpl.java

@@ -446,7 +446,9 @@ public class NetworkHelperImpl implements NetworkHelper {
         final int retryIndex = 5;
         final ExcludeList[] avoids = new ExcludeList[5];
         avoids[0] = new ExcludeList();
+        if (routerToBeAvoid.getPodIdToDeployIn() != null) {
             avoids[0].addPod(routerToBeAvoid.getPodIdToDeployIn());
+        }
         avoids[1] = new ExcludeList();
         avoids[1].addCluster(_hostDao.findById(routerToBeAvoid.getHostId()).getClusterId());
         avoids[2] = new ExcludeList();

server/src/main/java/com/cloud/resource/ResourceManagerImpl.java

@@ -60,9 +60,10 @@ import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
 import org.apache.cloudstack.storage.datastore.db.PrimaryDataStoreDao;
 import org.apache.cloudstack.storage.datastore.db.StoragePoolVO;
 import org.apache.cloudstack.utils.identity.ManagementServerNode;
+
 import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.lang.ObjectUtils;
-import org.apache.commons.lang3.StringUtils;
+
 import org.springframework.stereotype.Component;
 
 import com.cloud.agent.AgentManager;
@@ -92,7 +93,6 @@ import com.cloud.capacity.CapacityVO;
 import com.cloud.capacity.dao.CapacityDao;
 import com.cloud.cluster.ClusterManager;
 import com.cloud.configuration.Config;
-import com.cloud.configuration.ConfigurationManager;
 import com.cloud.cpu.CPU;
 import com.cloud.dc.ClusterDetailsDao;
 import com.cloud.dc.ClusterDetailsVO;
@@ -125,7 +125,6 @@ import com.cloud.exception.DiscoveryException;
 import com.cloud.exception.InsufficientServerCapacityException;
 import com.cloud.exception.InvalidParameterValueException;
 import com.cloud.exception.PermissionDeniedException;
-import com.cloud.exception.ResourceInUseException;
 import com.cloud.exception.ResourceUnavailableException;
 import com.cloud.exception.StorageConflictException;
 import com.cloud.exception.StorageUnavailableException;
@@ -170,7 +169,6 @@ import com.cloud.storage.StorageService;
 import com.cloud.storage.VMTemplateVO;
 import com.cloud.storage.Volume;
 import com.cloud.storage.VolumeVO;
-import com.cloud.storage.dao.DiskOfferingDao;
 import com.cloud.storage.dao.GuestOSCategoryDao;
 import com.cloud.storage.dao.StoragePoolHostDao;
 import com.cloud.storage.dao.VMTemplateDao;
@@ -203,6 +201,7 @@ import com.cloud.utils.net.NetUtils;
 import com.cloud.utils.ssh.SSHCmdHelper;
 import com.cloud.utils.ssh.SshException;
 import com.cloud.vm.UserVmManager;
+import com.cloud.utils.StringUtils;
 import com.cloud.vm.VMInstanceVO;
 import com.cloud.vm.VirtualMachine;
 import com.cloud.vm.VirtualMachine.State;
@@ -236,8 +235,6 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @Inject
     private CapacityDao _capacityDao;
     @Inject
-    private DiskOfferingDao diskOfferingDao;
-    @Inject
     private ServiceOfferingDao serviceOfferingDao;
     @Inject
     private HostDao _hostDao;
@@ -296,8 +293,6 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @Inject
     private VMTemplateDao _templateDao;
     @Inject
-    private ConfigurationManager _configMgr;
-    @Inject
     private ClusterVSMMapDao _clusterVSMMapDao;
     @Inject
     private UserVmDetailsDao userVmDetailsDao;
@@ -312,9 +307,9 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
     private final long _nodeId = ManagementServerNode.getManagementServerId();
 
-    private final HashMap<String, ResourceStateAdapter> _resourceStateAdapters = new HashMap<String, ResourceStateAdapter>();
+    private final HashMap<String, ResourceStateAdapter> _resourceStateAdapters = new HashMap<>();
 
-    private final HashMap<Integer, List<ResourceListener>> _lifeCycleListeners = new HashMap<Integer, List<ResourceListener>>();
+    private final HashMap<Integer, List<ResourceListener>> _lifeCycleListeners = new HashMap<>();
     private HypervisorType _defaultSystemVMHypervisor;
 
     private static final int ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_COOPERATION = 30; // seconds
@@ -324,11 +319,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     private SearchBuilder<HostGpuGroupsVO> _gpuAvailability;
 
     private void insertListener(final Integer event, final ResourceListener listener) {
-        List<ResourceListener> lst = _lifeCycleListeners.get(event);
+        List<ResourceListener> lst = _lifeCycleListeners.computeIfAbsent(event, k -> new ArrayList<>());
-        if (lst == null) {
-            lst = new ArrayList<ResourceListener>();
-            _lifeCycleListeners.put(event, lst);
-        }
 
         if (lst.contains(listener)) {
             throw new CloudRuntimeException("Duplicate resource lisener:" + listener.getClass().getSimpleName());
@@ -370,9 +361,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @Override
     public void unregisterResourceEvent(final ResourceListener listener) {
         synchronized (_lifeCycleListeners) {
-            final Iterator it = _lifeCycleListeners.entrySet().iterator();
+            for (Map.Entry<Integer, List<ResourceListener>> items : _lifeCycleListeners.entrySet()) {
-            while (it.hasNext()) {
-                final Map.Entry<Integer, List<ResourceListener>> items = (Map.Entry<Integer, List<ResourceListener>>)it.next();
                 final List<ResourceListener> lst = items.getValue();
                 lst.remove(listener);
             }
@@ -381,7 +370,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
     protected void processResourceEvent(final Integer event, final Object... params) {
         final List<ResourceListener> lst = _lifeCycleListeners.get(event);
-        if (lst == null || lst.size() == 0) {
+        if (lst == null || lst.isEmpty()) {
             return;
         }
 
@@ -422,7 +411,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
     @DB
     @Override
-    public List<? extends Cluster> discoverCluster(final AddClusterCmd cmd) throws IllegalArgumentException, DiscoveryException, ResourceInUseException {
+    public List<? extends Cluster> discoverCluster(final AddClusterCmd cmd) throws IllegalArgumentException, DiscoveryException {
         final long dcId = cmd.getZoneId();
         final long podId = cmd.getPodId();
         final String clusterName = cmd.getClusterName();
@@ -432,10 +421,10 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         CPU.CPUArch arch = cmd.getArch();
 
         if (url != null) {
-            url = URLDecoder.decode(url);
+            url = URLDecoder.decode(url, com.cloud.utils.StringUtils.getPreferredCharset());
         }
 
-        URI uri = null;
+        URI uri;
 
         // Check if the zone exists in the system
         final DataCenterVO zone = _dcDao.findById(dcId);
@@ -519,7 +508,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             discoverer.putParam(allParams);
         }
 
-        final List<ClusterVO> result = new ArrayList<ClusterVO>();
+        final List<ClusterVO> result = new ArrayList<>();
 
         ClusterVO cluster = new ClusterVO(dcId, podId, clusterName);
         cluster.setHypervisorType(hypervisorType.toString());
@@ -540,7 +529,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         result.add(cluster);
 
         if (clusterType == Cluster.ClusterType.CloudManaged) {
-            final Map<String, String> details = new HashMap<String, String>();
+            final Map<String, String> details = new HashMap<>();
             // should do this nicer perhaps ?
             if (hypervisorType == HypervisorType.Ovm3) {
                 final Map<String, String> allParams = cmd.getFullUrlParams();
@@ -578,8 +567,8 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                 throw new InvalidParameterValueException(url + " is not a valid uri");
             }
 
-            final List<HostVO> hosts = new ArrayList<HostVO>();
+            final List<HostVO> hosts = new ArrayList<>();
-            Map<? extends ServerResource, Map<String, String>> resources = null;
+            Map<? extends ServerResource, Map<String, String>> resources;
             resources = discoverer.find(dcId, podId, cluster.getId(), uri, username, password, null);
 
             if (resources != null) {
@@ -670,7 +659,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     private List<HostVO> discoverHostsFull(final Long dcId, final Long podId, Long clusterId, final String clusterName, String url, String username, String password,
             final String hypervisorType, final List<String> hostTags, final Map<String, String> params, final boolean deferAgentCreation) throws IllegalArgumentException, DiscoveryException,
             InvalidParameterValueException {
-        URI uri = null;
+        URI uri;
 
         // Check if the zone exists in the system
         final DataCenterVO zone = _dcDao.findById(dcId);
@@ -810,7 +799,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             throw new InvalidParameterValueException(url + " is not a valid uri");
         }
 
-        final List<HostVO> hosts = new ArrayList<HostVO>();
+        final List<HostVO> hosts = new ArrayList<>();
         logger.info("Trying to add a new host at {} in data center {}", url, zone);
         boolean isHypervisorTypeSupported = false;
         for (final Discoverer discoverer : _discoverers) {
@@ -872,7 +861,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                         return null;
                     }
 
-                    HostVO host = null;
+                    HostVO host;
                     if (deferAgentCreation) {
                         host = (HostVO)createHostAndAgentDeferred(resource, entry.getValue(), true, hostTags, false);
                     } else {
@@ -1099,7 +1088,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                     // don't allow to remove the cluster if it has non-removed storage
                     // pools
                     final List<StoragePoolVO> storagePools = _storagePoolDao.listPoolsByCluster(cmd.getId());
-                    if (storagePools.size() > 0) {
+                    if (!storagePools.isEmpty()) {
                         logger.debug("{} still has storage pools, can't remove", cluster);
                         throw new CloudRuntimeException(String.format("Cluster: %s cannot be removed. Cluster still has storage pools", cluster));
                     }
@@ -1166,7 +1155,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             }
         }
 
-        Cluster.ClusterType newClusterType = null;
+        Cluster.ClusterType newClusterType;
         if (clusterType != null && !clusterType.isEmpty()) {
             try {
                 newClusterType = Cluster.ClusterType.valueOf(clusterType);
@@ -1182,7 +1171,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             }
         }
 
-        Grouping.AllocationState newAllocationState = null;
+        Grouping.AllocationState newAllocationState;
         if (allocationState != null && !allocationState.isEmpty()) {
             try {
                 newAllocationState = Grouping.AllocationState.valueOf(allocationState);
@@ -1244,12 +1233,13 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                         }
                     }
                     final int retry = 40;
-                    boolean lsuccess = true;
+                    boolean lsuccess;
                     for (int i = 0; i < retry; i++) {
                         lsuccess = true;
                         try {
-                            Thread.sleep(5 * 1000);
+                            Thread.currentThread().wait(5 * 1000);
-                        } catch (final Exception e) {
+                        } catch (final InterruptedException e) {
+                            logger.debug("thread unexpectedly interrupted during wait, while updating cluster");
                         }
                         hosts = listAllUpAndEnabledHosts(Host.Type.Routing, cluster.getId(), cluster.getPodId(), cluster.getDataCenterId());
                         for (final HostVO host : hosts) {
@@ -1258,12 +1248,12 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                                 break;
                             }
                         }
-                        if (lsuccess == true) {
+                        if (lsuccess) {
                             success = true;
                             break;
                         }
                     }
-                    if (success == false) {
+                    if (!success) {
                         throw new CloudRuntimeException("PrepareUnmanaged Failed due to some hosts are still in UP status after 5 Minutes, please try later ");
                     }
                 } finally {
@@ -1384,7 +1374,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         /* TODO: move below to listener */
         if (host.getType() == Host.Type.Routing) {
-            if (vms.size() == 0) {
+            if (vms.isEmpty()) {
                 return true;
             }
 
@@ -1412,7 +1402,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                         String logMessage = String.format(
                                 "Unsupported host.maintenance.local.storage.strategy: %s. Please set a strategy according to the global settings description: "
                                         + "'Error', 'Migration', or 'ForceStop'.",
-                                HOST_MAINTENANCE_LOCAL_STRATEGY.value().toString());
+                                HOST_MAINTENANCE_LOCAL_STRATEGY.value());
                         logger.error(logMessage);
                         throw new CloudRuntimeException("There are active VMs using the host's local storage pool. Please stop all VMs on this host that use local storage.");
                     }
@@ -1469,14 +1459,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         ServiceOfferingVO offeringVO = serviceOfferingDao.findById(vm.getServiceOfferingId());
         final VirtualMachineProfile profile = new VirtualMachineProfileImpl(vm, null, offeringVO, null, null);
         plan.setMigrationPlan(true);
-        DeployDestination dest = null;
+        DeployDestination dest = getDeployDestination(vm, profile, plan, host);
-        DeploymentPlanner.ExcludeList avoids = new DeploymentPlanner.ExcludeList();
-        avoids.addHost(host.getId());
-        try {
-            dest = deploymentManager.planDeployment(profile, plan, avoids, null);
-        } catch (InsufficientServerCapacityException e) {
-            throw new CloudRuntimeException(String.format("Maintenance failed, could not find deployment destination for VM: %s.", vm), e);
-        }
         Host destHost = dest.getHost();
 
         try {
@@ -1487,6 +1470,22 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         }
     }
 
+    private DeployDestination getDeployDestination(VMInstanceVO vm, VirtualMachineProfile profile, DataCenterDeployment plan, HostVO hostToAvoid) {
+        DeployDestination dest;
+        DeploymentPlanner.ExcludeList avoids = new DeploymentPlanner.ExcludeList();
+        avoids.addHost(hostToAvoid.getId());
+        try {
+            dest = deploymentManager.planDeployment(profile, plan, avoids, null);
+        } catch (InsufficientServerCapacityException e) {
+            throw new CloudRuntimeException(String.format("Maintenance failed, could not find deployment destination for VM [id=%s, name=%s].", vm.getId(), vm.getInstanceName()),
+                    e);
+        }
+        if (dest == null) {
+            throw new CloudRuntimeException(String.format("Maintenance failed, could not find deployment destination for VM [id=%s, name=%s], using plan: %s.", vm.getId(), vm.getInstanceName(), plan));
+        }
+        return dest;
+    }
+
     @Override
     public boolean maintain(final long hostId) throws AgentUnavailableException {
         final Boolean result = propagateResourceEvent(hostId, ResourceState.Event.AdminAskMaintenance);
@@ -1535,15 +1534,15 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         List<VMInstanceVO> migratingInVMs = _vmDao.findByHostInStates(hostId, State.Migrating);
 
-        if (migratingInVMs.size() > 0) {
+        if (!migratingInVMs.isEmpty()) {
             throw new CloudRuntimeException("Host contains incoming VMs migrating. Please wait for them to complete before putting to maintenance.");
         }
 
-        if (_vmDao.findByHostInStates(hostId, State.Starting, State.Stopping).size() > 0) {
+        if (!_vmDao.findByHostInStates(hostId, State.Starting, State.Stopping).isEmpty()) {
             throw new CloudRuntimeException("Host contains VMs in starting/stopping state. Please wait for them to complete before putting to maintenance.");
         }
 
-        if (_vmDao.findByHostInStates(hostId, State.Error, State.Unknown).size() > 0) {
+        if (!_vmDao.findByHostInStates(hostId, State.Error, State.Unknown).isEmpty()) {
             throw new CloudRuntimeException("Host contains VMs in error/unknown/shutdown state. Please fix errors to proceed.");
         }
 
@@ -1564,25 +1563,22 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         if(StringUtils.isBlank(HOST_MAINTENANCE_LOCAL_STRATEGY.value())) {
             return false;
         }
-        return HOST_MAINTENANCE_LOCAL_STRATEGY.value().toLowerCase().equals(WorkType.Migration.toString().toLowerCase());
+        return HOST_MAINTENANCE_LOCAL_STRATEGY.value().equalsIgnoreCase(WorkType.Migration.toString());
     }
 
     protected boolean isMaintenanceLocalStrategyForceStop() {
         if(StringUtils.isBlank(HOST_MAINTENANCE_LOCAL_STRATEGY.value())) {
             return false;
         }
-        return HOST_MAINTENANCE_LOCAL_STRATEGY.value().toLowerCase().equals(WorkType.ForceStop.toString().toLowerCase());
+        return HOST_MAINTENANCE_LOCAL_STRATEGY.value().equalsIgnoreCase(WorkType.ForceStop.toString());
     }
 
     /**
      * Returns true if the host.maintenance.local.storage.strategy is the Default: "Error", blank, empty, or null.
      */
     protected boolean isMaintenanceLocalStrategyDefault() {
-        if (StringUtils.isBlank(HOST_MAINTENANCE_LOCAL_STRATEGY.value().toString())
+        return StringUtils.isBlank(HOST_MAINTENANCE_LOCAL_STRATEGY.value())
-                || HOST_MAINTENANCE_LOCAL_STRATEGY.value().toLowerCase().equals(State.Error.toString().toLowerCase())) {
+                || HOST_MAINTENANCE_LOCAL_STRATEGY.value().equalsIgnoreCase(State.Error.toString());
-            return true;
-        }
-        return false;
     }
 
     /**
@@ -1733,7 +1729,6 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
      * Return true if host goes into Maintenance mode. There are various possibilities for VMs' states
      * on a host. We need to track the various VM states on each run and accordingly transit to the
      * appropriate state.
-     *
      * We change states as follows -
      * 1. If there are no VMs in running, migrating, starting, stopping, error, unknown states we can move
      *    to maintenance state. Note that there cannot be incoming migrations as the API Call prepare for
@@ -1907,7 +1902,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                 guestOSDetail.setValue(String.valueOf(guestOSCategory.getId()));
                 _hostDetailsDao.update(guestOSDetail.getId(), guestOSDetail);
             } else {
-                final Map<String, String> detail = new HashMap<String, String>();
+                final Map<String, String> detail = new HashMap<>();
                 detail.put("guest.os.category.id", String.valueOf(guestOSCategory.getId()));
                 _hostDetailsDao.persist(hostId, detail);
             }
@@ -2057,9 +2052,9 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
     @Override
     public List<HypervisorType> getSupportedHypervisorTypes(final long zoneId, final boolean forVirtualRouter, final Long podId) {
-        final List<HypervisorType> hypervisorTypes = new ArrayList<HypervisorType>();
+        final List<HypervisorType> hypervisorTypes = new ArrayList<>();
 
-        List<ClusterVO> clustersForZone = new ArrayList<ClusterVO>();
+        List<ClusterVO> clustersForZone;
         if (podId != null) {
             clustersForZone = _clusterDao.listByPodId(podId);
         } else {
@@ -2068,7 +2063,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         for (final ClusterVO cluster : clustersForZone) {
             final HypervisorType hType = cluster.getHypervisorType();
-            if (!forVirtualRouter || forVirtualRouter && hType != HypervisorType.BareMetal && hType != HypervisorType.Ovm) {
+            if (!forVirtualRouter || (hType != HypervisorType.BareMetal && hType != HypervisorType.Ovm)) {
                 hypervisorTypes.add(hType);
             }
         }
@@ -2104,7 +2099,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         if (isValid) {
             final List<ClusterVO> clusters = _clusterDao.listByDcHyType(zoneId, defaultHyper.toString());
-            if (clusters.size() <= 0) {
+            if (clusters.isEmpty()) {
                 isValid = false;
             }
         }
@@ -2121,7 +2116,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         HypervisorType defaultHype = getDefaultHypervisor(zoneId);
         if (defaultHype == HypervisorType.None) {
             final List<HypervisorType> supportedHypes = getSupportedHypervisorTypes(zoneId, false, null);
-            if (supportedHypes.size() > 0) {
+            if (!supportedHypes.isEmpty()) {
                 Collections.shuffle(supportedHypes);
                 defaultHype = supportedHypes.get(0);
             }
@@ -2245,10 +2240,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         final String cidrNetmask = NetUtils.getCidrSubNet("255.255.255.255", cidrSize);
         final long cidrNetmaskNumeric = NetUtils.ip2Long(cidrNetmask);
         final long serverNetmaskNumeric = NetUtils.ip2Long(serverPrivateNetmask);
-        if (serverNetmaskNumeric > cidrNetmaskNumeric) {
+        return serverNetmaskNumeric <= cidrNetmaskNumeric;
-            return false;
-        }
-        return true;
     }
 
     private HostVO getNewHost(StartupCommand[] startupCommands) {
@@ -2262,11 +2254,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         host = findHostByGuid(startupCommand.getGuidWithoutResource());
 
-        if (host != null) {
+        return host; // even when host == null!
-            return host;
-        }
-
-        return null;
     }
 
     protected HostVO createHostVO(final StartupCommand[] cmds, final ServerResource resource, final Map<String, String> details, List<String> hostTags,
@@ -2297,11 +2285,11 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             }
         }
 
-        long dcId = -1;
+        long dcId;
         DataCenterVO dc = _dcDao.findByName(dataCenter);
         if (dc == null) {
             try {
-                dcId = Long.parseLong(dataCenter);
+                dcId = Long.parseLong(dataCenter != null ? dataCenter : "-1");
                 dc = _dcDao.findById(dcId);
             } catch (final NumberFormatException e) {
                 logger.debug("Cannot parse " + dataCenter + " into Long.");
@@ -2315,7 +2303,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         HostPodVO p = _podDao.findByName(pod, dcId);
         if (p == null) {
             try {
-                final long podId = Long.parseLong(pod);
+                final long podId = Long.parseLong(pod != null ? pod : "-1");
                 p = _podDao.findById(podId);
             } catch (final NumberFormatException e) {
                 logger.debug("Cannot parse " + pod + " into Long.");
@@ -2334,9 +2322,9 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                 clusterId = Long.valueOf(cluster);
             } catch (final NumberFormatException e) {
                 if (podId != null) {
-                    ClusterVO c = _clusterDao.findBy(cluster, podId.longValue());
+                    ClusterVO c = _clusterDao.findBy(cluster, podId);
                     if (c == null) {
-                        c = new ClusterVO(dcId, podId.longValue(), cluster);
+                        c = new ClusterVO(dcId, podId, cluster);
                         c = _clusterDao.persist(c);
                     }
                     clusterId = c.getId();
@@ -2439,7 +2427,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         for (Long hostId : hostIds) {
             DetailVO hostDetailVO = _hostDetailsDao.findDetail(hostId, name);
 
-            if (hostDetailVO == null || Boolean.parseBoolean(hostDetailVO.getValue()) == false) {
+            if (hostDetailVO == null || !Boolean.parseBoolean(hostDetailVO.getValue())) {
                 clusterSupportsResigning = false;
 
                 break;
@@ -2527,7 +2515,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             }
 
             if (logger.isDebugEnabled()) {
-                new Request(-1l, -1l, cmds, true, false).logD("Startup request from directly connected host: ", true);
+                new Request(-1L, -1L, cmds, true, false).logD("Startup request from directly connected host: ", true);
             }
 
             if (old) {
@@ -2597,7 +2585,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             }
 
             if (logger.isDebugEnabled()) {
-                new Request(-1l, -1l, cmds, true, false).logD("Startup request from directly connected host: ", true);
+                new Request(-1L, -1L, cmds, true, false).logD("Startup request from directly connected host: ", true);
             }
 
             if (old) {
@@ -2682,8 +2670,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
     @Override
     public Host createHostAndAgent(final Long hostId, final ServerResource resource, final Map<String, String> details, final boolean old, final List<String> hostTags, final boolean forRebalance) {
-        final Host host = createHostAndAgent(resource, details, old, hostTags, forRebalance);
+        return createHostAndAgent(resource, details, old, hostTags, forRebalance);
-        return host;
     }
 
     @Override
@@ -2693,8 +2680,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             throw new InvalidParameterValueException("Can't find zone with id " + zoneId);
         }
 
-        final Map<String, String> details = hostDetails;
+        final String guid = hostDetails.get("guid");
-        final String guid = details.get("guid");
         final List<HostVO> currentHosts = listAllUpAndEnabledHostsInOneZoneByType(hostType, zoneId);
         for (final HostVO currentHost : currentHosts) {
             if (currentHost.getGuid().equals(guid)) {
@@ -2710,7 +2696,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         return createHostVO(cmds, null, null, null, ResourceStateAdapter.Event.CREATE_HOST_VO_FOR_CONNECTED);
     }
 
-    private void checkIPConflicts(final HostPodVO pod, final DataCenterVO dc, final String serverPrivateIP, final String serverPrivateNetmask, final String serverPublicIP, final String serverPublicNetmask) {
+    private void checkIPConflicts(final HostPodVO pod, final DataCenterVO dc, final String serverPrivateIP, final String serverPublicIP) {
         // If the server's private IP is the same as is public IP, this host has
         // a host-only private network. Don't check for conflicts with the
         // private IP address table.
@@ -2739,7 +2725,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             // If the server's public IP address is already in the database,
             // return false
             final List<IPAddressVO> existingPublicIPs = _publicIPAddressDao.listByDcIdIpAddress(dc.getId(), serverPublicIP);
-            if (existingPublicIPs.size() > 0) {
+            if (!existingPublicIPs.isEmpty()) {
                 throw new IllegalArgumentException("The public ip address of the server (" + serverPublicIP + ") is already in use in zone: " + dc.getName());
             }
         }
@@ -2776,7 +2762,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
 
         final HostPodVO pod = _podDao.findById(host.getPodId());
         final DataCenterVO dc = _dcDao.findById(host.getDataCenterId());
-        checkIPConflicts(pod, dc, ssCmd.getPrivateIpAddress(), ssCmd.getPublicIpAddress(), ssCmd.getPublicIpAddress(), ssCmd.getPublicNetmask());
+        checkIPConflicts(pod, dc, ssCmd.getPrivateIpAddress(), ssCmd.getPublicIpAddress());
         host.setType(com.cloud.host.Host.Type.Routing);
         host.setDetails(details);
         host.setCaps(ssCmd.getCapabilities());
@@ -2814,8 +2800,8 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
                         throw new UnableDeleteHostException("Failed to set primary storage into maintenance mode");
                     }
                 } catch (final Exception e) {
-                    logger.debug("Failed to set primary storage into maintenance mode, due to: " + e.toString());
+                    logger.debug("Failed to set primary storage into maintenance mode", e);
-                    throw new UnableDeleteHostException("Failed to set primary storage into maintenance mode, due to: " + e.toString());
+                    throw new UnableDeleteHostException("Failed to set primary storage into maintenance mode, due to: " + e);
                 }
             }
 
@@ -2959,7 +2945,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
             if (result.getReturnCode() != 0) {
                 throw new CloudRuntimeException(String.format("Could not restart agent on %s due to: %s", host, result.getStdErr()));
             }
-            logger.debug("cloudstack-agent restart result: " + result.toString());
+            logger.debug("cloudstack-agent restart result: {}", result);
         } catch (final SshException e) {
             throw new CloudRuntimeException("SSH to agent is enabled, but agent restart failed", e);
         }
@@ -2980,7 +2966,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     }
 
     @Override
-    public boolean executeUserRequest(final long hostId, final ResourceState.Event event) throws AgentUnavailableException {
+    public boolean executeUserRequest(final long hostId, final ResourceState.Event event) {
         if (event == ResourceState.Event.AdminAskMaintenance) {
             return doMaintain(hostId);
         } else if (event == ResourceState.Event.AdminCancelMaintenance) {
@@ -3306,7 +3292,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     public HostStats getHostStatistics(final Host host) {
         final Answer answer = _agentMgr.easySend(host.getId(), new GetHostStatsCommand(host.getGuid(), host.getName(), host.getId()));
 
-        if (answer != null && answer instanceof UnsupportedAnswer) {
+        if (answer instanceof UnsupportedAnswer) {
             return null;
         }
 
@@ -3342,20 +3328,16 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @Override
     public String getHostTags(final long hostId) {
         final List<String> hostTags = _hostTagsDao.getHostTags(hostId).parallelStream().map(HostTagVO::getTag).collect(Collectors.toList());
-        if (hostTags == null) {
+        return StringUtils.listToCsvTags(hostTags);
-            return null;
-        } else {
-            return com.cloud.utils.StringUtils.listToCsvTags(hostTags);
-        }
     }
 
     @Override
     public List<PodCluster> listByDataCenter(final long dcId) {
         final List<HostPodVO> pods = _podDao.listByDataCenterId(dcId);
-        final ArrayList<PodCluster> pcs = new ArrayList<PodCluster>();
+        final ArrayList<PodCluster> pcs = new ArrayList<>();
         for (final HostPodVO pod : pods) {
             final List<ClusterVO> clusters = _clusterDao.listByPodId(pod.getId());
-            if (clusters.size() == 0) {
+            if (clusters.isEmpty()) {
                 pcs.add(new PodCluster(pod, null));
             } else {
                 for (final ClusterVO cluster : clusters) {
@@ -3400,7 +3382,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     public boolean isHostGpuEnabled(final long hostId) {
         final SearchCriteria<HostGpuGroupsVO> sc = _gpuAvailability.create();
         sc.setParameters("hostId", hostId);
-        return _hostGpuGroupsDao.customSearch(sc, null).size() > 0 ? true : false;
+        return !_hostGpuGroupsDao.customSearch(sc, null).isEmpty();
     }
 
     @Override
@@ -3465,7 +3447,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
         // Update GPU group capacity
         final TransactionLegacy txn = TransactionLegacy.currentTxn();
         txn.start();
-        _hostGpuGroupsDao.persist(hostId, new ArrayList<String>(groupDetails.keySet()));
+        _hostGpuGroupsDao.persist(hostId, new ArrayList<>(groupDetails.keySet()));
         _vgpuTypesDao.persist(hostId, groupDetails);
         txn.commit();
     }
@@ -3473,7 +3455,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @Override
     public HashMap<String, HashMap<String, VgpuTypesInfo>> getGPUStatistics(final HostVO host) {
         final Answer answer = _agentMgr.easySend(host.getId(), new GetGPUStatsCommand(host.getGuid(), host.getName()));
-        if (answer != null && answer instanceof UnsupportedAnswer) {
+        if (answer instanceof UnsupportedAnswer) {
             return null;
         }
         if (answer == null || !answer.getResult()) {
@@ -3514,7 +3496,7 @@ public class ResourceManagerImpl extends ManagerBase implements ResourceManager,
     @ActionEvent(eventType = EventTypes.EVENT_HOST_RESERVATION_RELEASE, eventDescription = "releasing host reservation", async = true)
     public boolean releaseHostReservation(final Long hostId) {
         try {
-            return Transaction.execute(new TransactionCallback<Boolean>() {
+            return Transaction.execute(new TransactionCallback<>() {
                 @Override
                 public Boolean doInTransaction(final TransactionStatus status) {
                     final PlannerHostReservationVO reservationEntry = _plannerHostReserveDao.findByHostId(hostId);

ui/src/config/section/compute.js

@@ -123,7 +123,7 @@ export default {
           dataView: true,
           groupAction: true,
           popup: true,
-          groupMap: (selection, values) => { return selection.map(x => { return { id: x, considerlasthost: values.considerlasthost } }) },
+          groupMap: (selection, values) => { return selection.map(x => { return { id: x, considerlasthost: values.considerlasthost === true } }) },
           args: (record, store) => {
             if (['Admin'].includes(store.userInfo.roletype)) {
               return ['considerlasthost']

ui/src/config/section/infra/hosts.js

@@ -115,9 +115,14 @@ export default {
       label: 'label.disable.host',
       message: 'message.confirm.disable.host',
       dataView: true,
-      show: (record) => { return record.resourcestate === 'Enabled' },
+      show: (record) => record.resourcestate === 'Enabled',
       popup: true,
-      component: shallowRef(defineAsyncComponent(() => import('@/views/infra/HostEnableDisable')))
+      component: shallowRef(defineAsyncComponent(() => import('@/views/infra/HostEnableDisable'))),
+      events: {
+        'refresh-data': () => {
+          store.dispatch('refreshCurrentPage')
+        }
+      }
     },
     {
       api: 'updateHost',
@@ -125,9 +130,14 @@ export default {
       label: 'label.enable.host',
       message: 'message.confirm.enable.host',
       dataView: true,
-      show: (record) => { return record.resourcestate === 'Disabled' },
+      show: (record) => record.resourcestate === 'Disabled',
       popup: true,
-      component: shallowRef(defineAsyncComponent(() => import('@/views/infra/HostEnableDisable')))
+      component: shallowRef(defineAsyncComponent(() => import('@/views/infra/HostEnableDisable'))),
+      events: {
+        'refresh-data': () => {
+          store.dispatch('refreshCurrentPage')
+        }
+      }
     },
     {
       api: 'prepareHostForMaintenance',

ui/src/views/compute/StartVirtualMachine.vue

@@ -243,7 +243,7 @@ export default {
           id: this.resource.id
         }
         for (const key in values) {
-          if (values[key]) {
+          if (values[key] || values[key] === false) {
             params[key] = values[key]
           }
         }

ui/src/views/infra/HostEnableDisable.vue

@@ -18,7 +18,7 @@
 <template>
   <div class="form-layout">
     <a-form
-      :ref="formRef"
+      ref="formRef"
       :model="form"
       :rules="rules"
       @finish="handleSubmit"
@@ -54,7 +54,7 @@
 </template>
 
 <script>
-import { ref, reactive, toRaw } from 'vue'
+import { reactive, toRaw } from 'vue'
 import { api } from '@/api'
 
 export default {
@@ -78,11 +78,8 @@ export default {
     this.resourcestate = this.resource.resourcestate
     this.allocationstate = this.resourcestate === 'Enabled' ? 'Disable' : 'Enable'
   },
-  beforeCreate () {
-  },
   methods: {
     initForm () {
-      this.formRef = ref()
       this.form = reactive({})
       this.rules = reactive({})
     },
@@ -97,11 +94,9 @@ export default {
       })
     },
     handleSubmit (e) {
-      e.preventDefault()
+      this.$refs.formRef.validate().then(() => {
-      this.formRef.value.validate().then(() => {
         const values = toRaw(this.form)
-
+        const data = {
-        var data = {
           allocationstate: this.allocationstate,
           id: this.resource.id
         }
@@ -110,22 +105,25 @@ export default {
         }
         api('updateHost', data).then(_ => {
           this.$emit('close-action')
+          this.$emit('refresh-data')
+        }).catch(err => {
+          this.$message.error(err.message || 'Failed to update host status')
         })
+      }).catch(() => {
+        this.$message.error('Validation failed. Please check the inputs.')
       })
     }
   }
 }
-
 </script>
 
 <style scoped>
 .reason {
-  padding-top: 20px
+  padding-top: 20px;
 }
 
 .form-layout {
   width: 30vw;
-
   @media (min-width: 500px) {
     width: 450px;
   }

ui/src/views/network/VpcTiersTab.vue

@@ -625,9 +625,9 @@ export default {
           if (this.publicLBExists && (idx === -1 || this.lbProviderMap.publicLb.vpc.indexOf(offering.service.map(svc => { return svc.provider[0].name })[idx]) === -1)) {
             filteredOfferings.push(offering)
           } else if (!this.publicLBExists && vpcLbServiceIndex > -1) {
-            const vpcLbServiceProvider = vpcLbServiceIndex === -1 ? undefined : this.resource.service[vpcLbServiceIndex].provider[0].name
+            const vpcLbServiceProviders = vpcLbServiceIndex === -1 ? undefined : this.resource.service[vpcLbServiceIndex].provider.map(provider => provider.name)
             const offeringLbServiceProvider = idx === -1 ? undefined : offering.service[idx].provider[0].name
-            if (vpcLbServiceProvider && (!offeringLbServiceProvider || (offeringLbServiceProvider && vpcLbServiceProvider === offeringLbServiceProvider))) {
+            if (vpcLbServiceProviders && (!offeringLbServiceProvider || (offeringLbServiceProvider && vpcLbServiceProviders.includes(offeringLbServiceProvider)))) {
               filteredOfferings.push(offering)
             }
           } else {