Examples with MigrateCommand com.cloud.agent.api.MigrateCommand used on opensource projects

Example 1 with MigrateCommand

use of com.cloud.agent.api.MigrateCommand in project CloudStack-archive by CloudStack-extras.

the class SimulatorManagerImpl method simulate.

@DB
@Override
public Answer simulate(Command cmd, String hostGuid) {
    Transaction txn = Transaction.currentTxn();
    txn.transitToUserManagedConnection(_concierge.conn());
    try {
        MockHost host = _mockHost.findByGuid(hostGuid);
        String cmdName = cmd.toString();
        int index = cmdName.lastIndexOf(".");
        if (index != -1) {
            cmdName = cmdName.substring(index + 1);
        }
        MockConfigurationVO config = _mockConfigDao.findByNameBottomUP(host.getDataCenterId(), host.getPodId(), host.getClusterId(), host.getId(), cmdName);
        SimulatorInfo info = new SimulatorInfo();
        info.setHostUuid(hostGuid);
        if (config != null) {
            Map<String, String> configParameters = config.getParameters();
            for (Map.Entry<String, String> entry : configParameters.entrySet()) {
                if (entry.getKey().equalsIgnoreCase("enabled")) {
                    info.setEnabled(Boolean.parseBoolean(entry.getValue()));
                } else if (entry.getKey().equalsIgnoreCase("timeout")) {
                    try {
                        info.setTimeout(Integer.valueOf(entry.getValue()));
                    } catch (NumberFormatException e) {
                        s_logger.debug("invalid timeout parameter: " + e.toString());
                    }
                } else if (entry.getKey().equalsIgnoreCase("wait")) {
                    try {
                        int wait = Integer.valueOf(entry.getValue());
                        Thread.sleep(wait * 1000);
                    } catch (NumberFormatException e) {
                        s_logger.debug("invalid timeout parameter: " + e.toString());
                    } catch (InterruptedException e) {
                        s_logger.debug("thread is interrupted: " + e.toString());
                    }
                }
            }
        }
        if (cmd instanceof GetHostStatsCommand) {
            return _mockAgentMgr.getHostStatistic((GetHostStatsCommand) cmd);
        } else if (cmd instanceof CheckHealthCommand) {
            return _mockAgentMgr.checkHealth((CheckHealthCommand) cmd);
        } else if (cmd instanceof PingTestCommand) {
            return _mockAgentMgr.pingTest((PingTestCommand) cmd);
        } else if (cmd instanceof MigrateCommand) {
            return _mockVmMgr.Migrate((MigrateCommand) cmd, info);
        } else if (cmd instanceof StartCommand) {
            return _mockVmMgr.startVM((StartCommand) cmd, info);
        } else if (cmd instanceof CheckSshCommand) {
            return _mockVmMgr.checkSshCommand((CheckSshCommand) cmd);
        } else if (cmd instanceof SetStaticNatRulesCommand) {
            return _mockVmMgr.SetStaticNatRules((SetStaticNatRulesCommand) cmd);
        } else if (cmd instanceof SetPortForwardingRulesCommand) {
            return _mockVmMgr.SetPortForwardingRules((SetPortForwardingRulesCommand) cmd);
        } else if (cmd instanceof NetworkUsageCommand) {
            return _mockVmMgr.getNetworkUsage((NetworkUsageCommand) cmd);
        } else if (cmd instanceof IpAssocCommand) {
            return _mockVmMgr.IpAssoc((IpAssocCommand) cmd);
        } else if (cmd instanceof LoadBalancerConfigCommand) {
            return _mockVmMgr.LoadBalancerConfig((LoadBalancerConfigCommand) cmd);
        } else if (cmd instanceof DhcpEntryCommand) {
            return _mockVmMgr.AddDhcpEntry((DhcpEntryCommand) cmd);
        } else if (cmd instanceof VmDataCommand) {
            return _mockVmMgr.setVmData((VmDataCommand) cmd);
        } else if (cmd instanceof CleanupNetworkRulesCmd) {
            return _mockVmMgr.CleanupNetworkRules((CleanupNetworkRulesCmd) cmd, info);
        } else if (cmd instanceof CheckNetworkCommand) {
            return _mockAgentMgr.checkNetworkCommand((CheckNetworkCommand) cmd);
        } else if (cmd instanceof StopCommand) {
            return _mockVmMgr.stopVM((StopCommand) cmd);
        } else if (cmd instanceof RebootCommand) {
            return _mockVmMgr.rebootVM((RebootCommand) cmd);
        } else if (cmd instanceof GetVncPortCommand) {
            return _mockVmMgr.getVncPort((GetVncPortCommand) cmd);
        } else if (cmd instanceof CheckConsoleProxyLoadCommand) {
            return _mockVmMgr.CheckConsoleProxyLoad((CheckConsoleProxyLoadCommand) cmd);
        } else if (cmd instanceof WatchConsoleProxyLoadCommand) {
            return _mockVmMgr.WatchConsoleProxyLoad((WatchConsoleProxyLoadCommand) cmd);
        } else if (cmd instanceof SecurityGroupRulesCmd) {
            return _mockVmMgr.AddSecurityGroupRules((SecurityGroupRulesCmd) cmd, info);
        } else if (cmd instanceof SavePasswordCommand) {
            return _mockVmMgr.SavePassword((SavePasswordCommand) cmd);
        } else if (cmd instanceof PrimaryStorageDownloadCommand) {
            return _mockStorageMgr.primaryStorageDownload((PrimaryStorageDownloadCommand) cmd);
        } else if (cmd instanceof CreateCommand) {
            return _mockStorageMgr.createVolume((CreateCommand) cmd);
        } else if (cmd instanceof AttachVolumeCommand) {
            return _mockStorageMgr.AttachVolume((AttachVolumeCommand) cmd);
        } else if (cmd instanceof AttachIsoCommand) {
            return _mockStorageMgr.AttachIso((AttachIsoCommand) cmd);
        } else if (cmd instanceof DeleteStoragePoolCommand) {
            return _mockStorageMgr.DeleteStoragePool((DeleteStoragePoolCommand) cmd);
        } else if (cmd instanceof ModifyStoragePoolCommand) {
            return _mockStorageMgr.ModifyStoragePool((ModifyStoragePoolCommand) cmd);
        } else if (cmd instanceof CreateStoragePoolCommand) {
            return _mockStorageMgr.CreateStoragePool((CreateStoragePoolCommand) cmd);
        } else if (cmd instanceof SecStorageSetupCommand) {
            return _mockStorageMgr.SecStorageSetup((SecStorageSetupCommand) cmd);
        } else if (cmd instanceof ListTemplateCommand) {
            return _mockStorageMgr.ListTemplates((ListTemplateCommand) cmd);
        } else if (cmd instanceof DestroyCommand) {
            return _mockStorageMgr.Destroy((DestroyCommand) cmd);
        } else if (cmd instanceof DownloadProgressCommand) {
            return _mockStorageMgr.DownloadProcess((DownloadProgressCommand) cmd);
        } else if (cmd instanceof DownloadCommand) {
            return _mockStorageMgr.Download((DownloadCommand) cmd);
        } else if (cmd instanceof GetStorageStatsCommand) {
            return _mockStorageMgr.GetStorageStats((GetStorageStatsCommand) cmd);
        } else if (cmd instanceof ManageSnapshotCommand) {
            return _mockStorageMgr.ManageSnapshot((ManageSnapshotCommand) cmd);
        } else if (cmd instanceof BackupSnapshotCommand) {
            return _mockStorageMgr.BackupSnapshot((BackupSnapshotCommand) cmd, info);
        } else if (cmd instanceof DeleteSnapshotBackupCommand) {
            return _mockStorageMgr.DeleteSnapshotBackup((DeleteSnapshotBackupCommand) cmd);
        } else if (cmd instanceof CreateVolumeFromSnapshotCommand) {
            return _mockStorageMgr.CreateVolumeFromSnapshot((CreateVolumeFromSnapshotCommand) cmd);
        } else if (cmd instanceof DeleteTemplateCommand) {
            return _mockStorageMgr.DeleteTemplate((DeleteTemplateCommand) cmd);
        } else if (cmd instanceof SecStorageVMSetupCommand) {
            return _mockStorageMgr.SecStorageVMSetup((SecStorageVMSetupCommand) cmd);
        } else if (cmd instanceof CreatePrivateTemplateFromSnapshotCommand) {
            return _mockStorageMgr.CreatePrivateTemplateFromSnapshot((CreatePrivateTemplateFromSnapshotCommand) cmd);
        } else if (cmd instanceof ComputeChecksumCommand) {
            return _mockStorageMgr.ComputeChecksum((ComputeChecksumCommand) cmd);
        } else if (cmd instanceof CreatePrivateTemplateFromVolumeCommand) {
            return _mockStorageMgr.CreatePrivateTemplateFromVolume((CreatePrivateTemplateFromVolumeCommand) cmd);
        } else if (cmd instanceof MaintainCommand) {
            return _mockAgentMgr.MaintainCommand((MaintainCommand) cmd);
        } else if (cmd instanceof GetVmStatsCommand) {
            return _mockVmMgr.getVmStats((GetVmStatsCommand) cmd);
        } else if (cmd instanceof GetDomRVersionCmd) {
            return _mockVmMgr.getDomRVersion((GetDomRVersionCmd) cmd);
        } else if (cmd instanceof ClusterSyncCommand) {
            return new Answer(cmd);
        } else if (cmd instanceof CopyVolumeCommand) {
            return _mockStorageMgr.CopyVolume((CopyVolumeCommand) cmd);
        } else {
            return Answer.createUnsupportedCommandAnswer(cmd);
        }
    } catch (Exception e) {
        s_logger.debug("Failed execute cmd: " + e.toString());
        txn.rollback();
        return new Answer(cmd, false, e.toString());
    } finally {
        txn.transitToAutoManagedConnection(Transaction.CLOUD_DB);
    }
}

Example 2 with MigrateCommand

use of com.cloud.agent.api.MigrateCommand in project cloudstack by apache.

the class LibvirtComputingResourceTest method testMigrateCommand.

@Test
public void testMigrateCommand() {
    final Connect conn = Mockito.mock(Connect.class);
    final Connect dconn = Mockito.mock(Connect.class);
    final LibvirtUtilitiesHelper libvirtUtilitiesHelper = Mockito.mock(LibvirtUtilitiesHelper.class);
    final String vmName = "Test";
    final String destIp = "127.0.0.100";
    final boolean isWindows = false;
    final VirtualMachineTO vmTO = Mockito.mock(VirtualMachineTO.class);
    final boolean executeInSequence = false;
    final MigrateCommand command = new MigrateCommand(vmName, destIp, isWindows, vmTO, executeInSequence);
    when(libvirtComputingResource.getLibvirtUtilitiesHelper()).thenReturn(libvirtUtilitiesHelper);
    try {
        when(libvirtUtilitiesHelper.getConnectionByVmName(vmName)).thenReturn(conn);
        when(libvirtUtilitiesHelper.retrieveQemuConnection("qemu+tcp://" + command.getDestinationIp() + "/system")).thenReturn(dconn);
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    final InterfaceDef interfaceDef = Mockito.mock(InterfaceDef.class);
    final List<InterfaceDef> ifaces = new ArrayList<InterfaceDef>();
    ifaces.add(interfaceDef);
    when(libvirtComputingResource.getInterfaces(conn, vmName)).thenReturn(ifaces);
    final DiskDef diskDef = Mockito.mock(DiskDef.class);
    final List<DiskDef> disks = new ArrayList<DiskDef>();
    disks.add(diskDef);
    when(libvirtComputingResource.getDisks(conn, vmName)).thenReturn(disks);
    final Domain dm = Mockito.mock(Domain.class);
    try {
        when(conn.domainLookupByName(vmName)).thenReturn(dm);
        when(libvirtComputingResource.getPrivateIp()).thenReturn("127.0.0.1");
        when(dm.getXMLDesc(8)).thenReturn("<domain type='kvm' id='3'>" + "  <devices>" + "    <graphics type='vnc' port='5900' autoport='yes' listen='10.10.10.1'>" + "      <listen type='address' address='10.10.10.1'/>" + "    </graphics>" + "  </devices>" + "</domain>");
        when(dm.getXMLDesc(1)).thenReturn("<domain type='kvm' id='3'>" + "  <devices>" + "    <graphics type='vnc' port='5900' autoport='yes' listen='10.10.10.1'>" + "      <listen type='address' address='10.10.10.1'/>" + "    </graphics>" + "  </devices>" + "</domain>");
        when(dm.isPersistent()).thenReturn(1);
        doNothing().when(dm).undefine();
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    } catch (final Exception e) {
        fail(e.getMessage());
    }
    final LibvirtRequestWrapper wrapper = LibvirtRequestWrapper.getInstance();
    assertNotNull(wrapper);
    final Answer answer = wrapper.execute(command, libvirtComputingResource);
    assertTrue(answer.getResult());
    verify(libvirtComputingResource, times(1)).getLibvirtUtilitiesHelper();
    try {
        verify(libvirtUtilitiesHelper, times(1)).getConnectionByVmName(vmName);
        verify(libvirtUtilitiesHelper, times(1)).retrieveQemuConnection("qemu+tcp://" + command.getDestinationIp() + "/system");
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    verify(libvirtComputingResource, times(1)).getInterfaces(conn, vmName);
    verify(libvirtComputingResource, times(1)).getDisks(conn, vmName);
    try {
        verify(conn, times(1)).domainLookupByName(vmName);
    } catch (final LibvirtException e) {
        fail(e.getMessage());
    }
    try {
        verify(dm, times(1)).getXMLDesc(8);
    } catch (final Throwable t) {
        try {
            verify(dm, times(1)).getXMLDesc(1);
        } catch (final LibvirtException e) {
            fail(e.getMessage());
        }
    }
}

Example 3 with MigrateCommand

use of com.cloud.agent.api.MigrateCommand in project cloudstack by apache.

the class NotAValidCommand method testMigrateCommand.

@Test
public void testMigrateCommand() {
    final VirtualMachineTO machineTO = Mockito.mock(VirtualMachineTO.class);
    final MigrateCommand migrateCommand = new MigrateCommand("Test", "127.0.0.1", false, machineTO, false);
    final CitrixRequestWrapper wrapper = CitrixRequestWrapper.getInstance();
    assertNotNull(wrapper);
    final Answer answer = wrapper.execute(migrateCommand, citrixResourceBase);
    verify(citrixResourceBase, times(1)).getConnection();
    assertFalse(answer.getResult());
}

Example 4 with MigrateCommand

use of com.cloud.agent.api.MigrateCommand in project cloudstack by apache.

the class VirtualMachineManagerImpl method migrate.

protected void migrate(final VMInstanceVO vm, final long srcHostId, final DeployDestination dest) throws ResourceUnavailableException, ConcurrentOperationException {
    s_logger.info("Migrating " + vm + " to " + dest);
    final long dstHostId = dest.getHost().getId();
    final Host fromHost = _hostDao.findById(srcHostId);
    if (fromHost == null) {
        s_logger.info("Unable to find the host to migrate from: " + srcHostId);
        throw new CloudRuntimeException("Unable to find the host to migrate from: " + srcHostId);
    }
    if (fromHost.getClusterId().longValue() != dest.getCluster().getId()) {
        final List<VolumeVO> volumes = _volsDao.findCreatedByInstance(vm.getId());
        for (final VolumeVO volume : volumes) {
            if (!_storagePoolDao.findById(volume.getPoolId()).getScope().equals(ScopeType.ZONE)) {
                s_logger.info("Source and destination host are not in same cluster and all volumes are not on zone wide primary store, unable to migrate to host: " + dest.getHost().getId());
                throw new CloudRuntimeException("Source and destination host are not in same cluster and all volumes are not on zone wide primary store, unable to migrate to host: " + dest.getHost().getId());
            }
        }
    }
    final VirtualMachineGuru vmGuru = getVmGuru(vm);
    if (vm.getState() != State.Running) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("VM is not Running, unable to migrate the vm " + vm);
        }
        throw new CloudRuntimeException("VM is not Running, unable to migrate the vm currently " + vm + " , current state: " + vm.getState().toString());
    }
    AlertManager.AlertType alertType = AlertManager.AlertType.ALERT_TYPE_USERVM_MIGRATE;
    if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
        alertType = AlertManager.AlertType.ALERT_TYPE_DOMAIN_ROUTER_MIGRATE;
    } else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
        alertType = AlertManager.AlertType.ALERT_TYPE_CONSOLE_PROXY_MIGRATE;
    }
    final VirtualMachineProfile vmSrc = new VirtualMachineProfileImpl(vm);
    for (final NicProfile nic : _networkMgr.getNicProfiles(vm)) {
        vmSrc.addNic(nic);
    }
    final VirtualMachineProfile profile = new VirtualMachineProfileImpl(vm, null, _offeringDao.findById(vm.getId(), vm.getServiceOfferingId()), null, null);
    _networkMgr.prepareNicForMigration(profile, dest);
    volumeMgr.prepareForMigration(profile, dest);
    profile.setConfigDriveLabel(VmConfigDriveLabel.value());
    final VirtualMachineTO to = toVmTO(profile);
    final PrepareForMigrationCommand pfmc = new PrepareForMigrationCommand(to);
    ItWorkVO work = new ItWorkVO(UUID.randomUUID().toString(), _nodeId, State.Migrating, vm.getType(), vm.getId());
    work.setStep(Step.Prepare);
    work.setResourceType(ItWorkVO.ResourceType.Host);
    work.setResourceId(dstHostId);
    work = _workDao.persist(work);
    Answer pfma = null;
    try {
        pfma = _agentMgr.send(dstHostId, pfmc);
        if (pfma == null || !pfma.getResult()) {
            final String details = pfma != null ? pfma.getDetails() : "null answer returned";
            final String msg = "Unable to prepare for migration due to " + details;
            pfma = null;
            throw new AgentUnavailableException(msg, dstHostId);
        }
    } catch (final OperationTimedoutException e1) {
        throw new AgentUnavailableException("Operation timed out", dstHostId);
    } finally {
        if (pfma == null) {
            _networkMgr.rollbackNicForMigration(vmSrc, profile);
            work.setStep(Step.Done);
            _workDao.update(work.getId(), work);
        }
    }
    vm.setLastHostId(srcHostId);
    try {
        if (vm == null || vm.getHostId() == null || vm.getHostId() != srcHostId || !changeState(vm, Event.MigrationRequested, dstHostId, work, Step.Migrating)) {
            _networkMgr.rollbackNicForMigration(vmSrc, profile);
            s_logger.info("Migration cancelled because state has changed: " + vm);
            throw new ConcurrentOperationException("Migration cancelled because state has changed: " + vm);
        }
    } catch (final NoTransitionException e1) {
        _networkMgr.rollbackNicForMigration(vmSrc, profile);
        s_logger.info("Migration cancelled because " + e1.getMessage());
        throw new ConcurrentOperationException("Migration cancelled because " + e1.getMessage());
    }
    boolean migrated = false;
    try {
        final boolean isWindows = _guestOsCategoryDao.findById(_guestOsDao.findById(vm.getGuestOSId()).getCategoryId()).getName().equalsIgnoreCase("Windows");
        final MigrateCommand mc = new MigrateCommand(vm.getInstanceName(), dest.getHost().getPrivateIpAddress(), isWindows, to, getExecuteInSequence(vm.getHypervisorType()));
        mc.setHostGuid(dest.getHost().getGuid());
        try {
            final Answer ma = _agentMgr.send(vm.getLastHostId(), mc);
            if (ma == null || !ma.getResult()) {
                final String details = ma != null ? ma.getDetails() : "null answer returned";
                throw new CloudRuntimeException(details);
            }
        } catch (final OperationTimedoutException e) {
            if (e.isActive()) {
                s_logger.warn("Active migration command so scheduling a restart for " + vm);
                _haMgr.scheduleRestart(vm, true);
            }
            throw new AgentUnavailableException("Operation timed out on migrating " + vm, dstHostId);
        }
        try {
            if (!changeState(vm, VirtualMachine.Event.OperationSucceeded, dstHostId, work, Step.Started)) {
                throw new ConcurrentOperationException("Unable to change the state for " + vm);
            }
        } catch (final NoTransitionException e1) {
            throw new ConcurrentOperationException("Unable to change state due to " + e1.getMessage());
        }
        try {
            if (!checkVmOnHost(vm, dstHostId)) {
                s_logger.error("Unable to complete migration for " + vm);
                try {
                    _agentMgr.send(srcHostId, new Commands(cleanup(vm)), null);
                } catch (final AgentUnavailableException e) {
                    s_logger.error("AgentUnavailableException while cleanup on source host: " + srcHostId);
                }
                cleanup(vmGuru, new VirtualMachineProfileImpl(vm), work, Event.AgentReportStopped, true);
                throw new CloudRuntimeException("Unable to complete migration for " + vm);
            }
        } catch (final OperationTimedoutException e) {
            s_logger.debug("Error while checking the vm " + vm + " on host " + dstHostId, e);
        }
        migrated = true;
    } finally {
        if (!migrated) {
            s_logger.info("Migration was unsuccessful.  Cleaning up: " + vm);
            _networkMgr.rollbackNicForMigration(vmSrc, profile);
            _alertMgr.sendAlert(alertType, fromHost.getDataCenterId(), fromHost.getPodId(), "Unable to migrate vm " + vm.getInstanceName() + " from host " + fromHost.getName() + " in zone " + dest.getDataCenter().getName() + " and pod " + dest.getPod().getName(), "Migrate Command failed.  Please check logs.");
            try {
                _agentMgr.send(dstHostId, new Commands(cleanup(vm)), null);
            } catch (final AgentUnavailableException ae) {
                s_logger.info("Looks like the destination Host is unavailable for cleanup");
            }
            try {
                stateTransitTo(vm, Event.OperationFailed, srcHostId);
            } catch (final NoTransitionException e) {
                s_logger.warn(e.getMessage());
            }
        } else {
            _networkMgr.commitNicForMigration(vmSrc, profile);
        }
        work.setStep(Step.Done);
        _workDao.update(work.getId(), work);
    }
}

Example 5 with MigrateCommand

use of com.cloud.agent.api.MigrateCommand in project cloudstack by apache.

the class VirtualMachineManagerImpl method orchestrateMigrateForScale.

private void orchestrateMigrateForScale(final String vmUuid, final long srcHostId, final DeployDestination dest, final Long oldSvcOfferingId) throws ResourceUnavailableException, ConcurrentOperationException {
    VMInstanceVO vm = _vmDao.findByUuid(vmUuid);
    s_logger.info("Migrating " + vm + " to " + dest);
    vm.getServiceOfferingId();
    final long dstHostId = dest.getHost().getId();
    final Host fromHost = _hostDao.findById(srcHostId);
    if (fromHost == null) {
        s_logger.info("Unable to find the host to migrate from: " + srcHostId);
        throw new CloudRuntimeException("Unable to find the host to migrate from: " + srcHostId);
    }
    if (fromHost.getClusterId().longValue() != dest.getCluster().getId()) {
        s_logger.info("Source and destination host are not in same cluster, unable to migrate to host: " + dstHostId);
        throw new CloudRuntimeException("Source and destination host are not in same cluster, unable to migrate to host: " + dest.getHost().getId());
    }
    final VirtualMachineGuru vmGuru = getVmGuru(vm);
    final long vmId = vm.getId();
    vm = _vmDao.findByUuid(vmUuid);
    if (vm == null) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Unable to find the vm " + vm);
        }
        throw new CloudRuntimeException("Unable to find a virtual machine with id " + vmId);
    }
    if (vm.getState() != State.Running) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("VM is not Running, unable to migrate the vm " + vm);
        }
        throw new CloudRuntimeException("VM is not Running, unable to migrate the vm currently " + vm + " , current state: " + vm.getState().toString());
    }
    AlertManager.AlertType alertType = AlertManager.AlertType.ALERT_TYPE_USERVM_MIGRATE;
    if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
        alertType = AlertManager.AlertType.ALERT_TYPE_DOMAIN_ROUTER_MIGRATE;
    } else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
        alertType = AlertManager.AlertType.ALERT_TYPE_CONSOLE_PROXY_MIGRATE;
    }
    final VirtualMachineProfile profile = new VirtualMachineProfileImpl(vm);
    _networkMgr.prepareNicForMigration(profile, dest);
    volumeMgr.prepareForMigration(profile, dest);
    final VirtualMachineTO to = toVmTO(profile);
    final PrepareForMigrationCommand pfmc = new PrepareForMigrationCommand(to);
    ItWorkVO work = new ItWorkVO(UUID.randomUUID().toString(), _nodeId, State.Migrating, vm.getType(), vm.getId());
    work.setStep(Step.Prepare);
    work.setResourceType(ItWorkVO.ResourceType.Host);
    work.setResourceId(dstHostId);
    work = _workDao.persist(work);
    Answer pfma = null;
    try {
        pfma = _agentMgr.send(dstHostId, pfmc);
        if (pfma == null || !pfma.getResult()) {
            final String details = pfma != null ? pfma.getDetails() : "null answer returned";
            final String msg = "Unable to prepare for migration due to " + details;
            pfma = null;
            throw new AgentUnavailableException(msg, dstHostId);
        }
    } catch (final OperationTimedoutException e1) {
        throw new AgentUnavailableException("Operation timed out", dstHostId);
    } finally {
        if (pfma == null) {
            work.setStep(Step.Done);
            _workDao.update(work.getId(), work);
        }
    }
    vm.setLastHostId(srcHostId);
    try {
        if (vm == null || vm.getHostId() == null || vm.getHostId() != srcHostId || !changeState(vm, Event.MigrationRequested, dstHostId, work, Step.Migrating)) {
            s_logger.info("Migration cancelled because state has changed: " + vm);
            throw new ConcurrentOperationException("Migration cancelled because state has changed: " + vm);
        }
    } catch (final NoTransitionException e1) {
        s_logger.info("Migration cancelled because " + e1.getMessage());
        throw new ConcurrentOperationException("Migration cancelled because " + e1.getMessage());
    }
    boolean migrated = false;
    try {
        final boolean isWindows = _guestOsCategoryDao.findById(_guestOsDao.findById(vm.getGuestOSId()).getCategoryId()).getName().equalsIgnoreCase("Windows");
        final MigrateCommand mc = new MigrateCommand(vm.getInstanceName(), dest.getHost().getPrivateIpAddress(), isWindows, to, getExecuteInSequence(vm.getHypervisorType()));
        mc.setHostGuid(dest.getHost().getGuid());
        try {
            final Answer ma = _agentMgr.send(vm.getLastHostId(), mc);
            if (ma == null || !ma.getResult()) {
                final String details = ma != null ? ma.getDetails() : "null answer returned";
                final String msg = "Unable to migrate due to " + details;
                s_logger.error(msg);
                throw new CloudRuntimeException(msg);
            }
        } catch (final OperationTimedoutException e) {
            if (e.isActive()) {
                s_logger.warn("Active migration command so scheduling a restart for " + vm);
                _haMgr.scheduleRestart(vm, true);
            }
            throw new AgentUnavailableException("Operation timed out on migrating " + vm, dstHostId);
        }
        try {
            final long newServiceOfferingId = vm.getServiceOfferingId();
            // release capacity for the old service offering only
            vm.setServiceOfferingId(oldSvcOfferingId);
            if (!changeState(vm, VirtualMachine.Event.OperationSucceeded, dstHostId, work, Step.Started)) {
                throw new ConcurrentOperationException("Unable to change the state for " + vm);
            }
            vm.setServiceOfferingId(newServiceOfferingId);
        } catch (final NoTransitionException e1) {
            throw new ConcurrentOperationException("Unable to change state due to " + e1.getMessage());
        }
        try {
            if (!checkVmOnHost(vm, dstHostId)) {
                s_logger.error("Unable to complete migration for " + vm);
                try {
                    _agentMgr.send(srcHostId, new Commands(cleanup(vm.getInstanceName())), null);
                } catch (final AgentUnavailableException e) {
                    s_logger.error("AgentUnavailableException while cleanup on source host: " + srcHostId);
                }
                cleanup(vmGuru, new VirtualMachineProfileImpl(vm), work, Event.AgentReportStopped, true);
                throw new CloudRuntimeException("Unable to complete migration for " + vm);
            }
        } catch (final OperationTimedoutException e) {
            s_logger.debug("Error while checking the vm " + vm + " on host " + dstHostId, e);
        }
        migrated = true;
    } finally {
        if (!migrated) {
            s_logger.info("Migration was unsuccessful.  Cleaning up: " + vm);
            _alertMgr.sendAlert(alertType, fromHost.getDataCenterId(), fromHost.getPodId(), "Unable to migrate vm " + vm.getInstanceName() + " from host " + fromHost.getName() + " in zone " + dest.getDataCenter().getName() + " and pod " + dest.getPod().getName(), "Migrate Command failed.  Please check logs.");
            try {
                _agentMgr.send(dstHostId, new Commands(cleanup(vm.getInstanceName())), null);
            } catch (final AgentUnavailableException ae) {
                s_logger.info("Looks like the destination Host is unavailable for cleanup");
            }
            try {
                stateTransitTo(vm, Event.OperationFailed, srcHostId);
            } catch (final NoTransitionException e) {
                s_logger.warn(e.getMessage());
            }
        }
        work.setStep(Step.Done);
        _workDao.update(work.getId(), work);
    }
}