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cloudstack/server/src/com/cloud/vm/VirtualMachineManagerImpl.java

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/**
* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
*
* This software is licensed under the GNU General Public License v3 or later.
*
* It is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package com.cloud.vm;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.agent.AgentManager;
import com.cloud.agent.AgentManager.OnError;
import com.cloud.agent.Listener;
import com.cloud.agent.api.AgentControlAnswer;
import com.cloud.agent.api.AgentControlCommand;
import com.cloud.agent.api.Answer;
import com.cloud.agent.api.CheckVirtualMachineAnswer;
import com.cloud.agent.api.CheckVirtualMachineCommand;
import com.cloud.agent.api.ClusterSyncAnswer;
import com.cloud.agent.api.ClusterSyncCommand;
import com.cloud.agent.api.Command;
import com.cloud.agent.api.MigrateAnswer;
import com.cloud.agent.api.MigrateCommand;
import com.cloud.agent.api.PingRoutingCommand;
import com.cloud.agent.api.PrepareForMigrationAnswer;
import com.cloud.agent.api.PrepareForMigrationCommand;
import com.cloud.agent.api.RebootAnswer;
import com.cloud.agent.api.RebootCommand;
import com.cloud.agent.api.StartAnswer;
import com.cloud.agent.api.StartCommand;
import com.cloud.agent.api.StartupCommand;
import com.cloud.agent.api.StartupRoutingCommand;
import com.cloud.agent.api.StartupRoutingCommand.VmState;
import com.cloud.agent.api.StopAnswer;
import com.cloud.agent.api.StopCommand;
import com.cloud.agent.api.to.VirtualMachineTO;
import com.cloud.agent.manager.Commands;
import com.cloud.agent.manager.allocator.HostAllocator;
import com.cloud.alert.AlertManager;
import com.cloud.capacity.CapacityManager;
import com.cloud.cluster.ClusterManager;
import com.cloud.cluster.StackMaid;
import com.cloud.configuration.Config;
import com.cloud.configuration.ConfigurationManager;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.consoleproxy.ConsoleProxyManager;
import com.cloud.dc.DataCenter;
import com.cloud.dc.DataCenterVO;
import com.cloud.dc.HostPodVO;
import com.cloud.dc.dao.DataCenterDao;
import com.cloud.dc.dao.HostPodDao;
import com.cloud.deploy.DataCenterDeployment;
import com.cloud.deploy.DeployDestination;
import com.cloud.deploy.DeploymentPlan;
import com.cloud.deploy.DeploymentPlanner;
import com.cloud.deploy.DeploymentPlanner.ExcludeList;
import com.cloud.domain.dao.DomainDao;
import com.cloud.exception.AgentUnavailableException;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.ConnectionException;
import com.cloud.exception.InsufficientAddressCapacityException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.InsufficientServerCapacityException;
import com.cloud.exception.InsufficientVirtualNetworkCapcityException;
import com.cloud.exception.ManagementServerException;
import com.cloud.exception.OperationTimedoutException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.exception.VirtualMachineMigrationException;
import com.cloud.ha.HighAvailabilityManager;
import com.cloud.ha.HighAvailabilityManager.WorkType;
import com.cloud.host.Host;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.host.dao.HostDao;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.hypervisor.HypervisorGuru;
import com.cloud.hypervisor.HypervisorGuruManager;
import com.cloud.network.Network;
import com.cloud.network.NetworkManager;
import com.cloud.network.NetworkVO;
import com.cloud.offering.ServiceOffering;
import com.cloud.org.Cluster;
import com.cloud.resource.ResourceManager;
import com.cloud.service.ServiceOfferingVO;
import com.cloud.service.dao.ServiceOfferingDao;
import com.cloud.storage.DiskOfferingVO;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.StorageManager;
import com.cloud.storage.StoragePool;
import com.cloud.storage.StoragePoolVO;
import com.cloud.storage.VMTemplateVO;
import com.cloud.storage.Volume;
import com.cloud.storage.Volume.Type;
import com.cloud.storage.VolumeVO;
import com.cloud.storage.dao.GuestOSCategoryDao;
import com.cloud.storage.dao.GuestOSDao;
import com.cloud.storage.dao.StoragePoolDao;
import com.cloud.storage.dao.VMTemplateDao;
import com.cloud.storage.dao.VolumeDao;
import com.cloud.user.Account;
import com.cloud.user.AccountManager;
import com.cloud.user.User;
import com.cloud.user.dao.AccountDao;
import com.cloud.user.dao.UserDao;
import com.cloud.uservm.UserVm;
import com.cloud.utils.DateUtil;
import com.cloud.utils.Journal;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.Pair;
import com.cloud.utils.Ternary;
import com.cloud.utils.component.Adapters;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.utils.component.Inject;
import com.cloud.utils.concurrency.NamedThreadFactory;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.GlobalLock;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.exception.ExecutionException;
import com.cloud.utils.fsm.NoTransitionException;
import com.cloud.utils.fsm.StateMachine2;
import com.cloud.vm.ItWorkVO.Step;
import com.cloud.vm.VirtualMachine.Event;
import com.cloud.vm.VirtualMachine.State;
import com.cloud.vm.dao.ConsoleProxyDao;
import com.cloud.vm.dao.DomainRouterDao;
import com.cloud.vm.dao.NicDao;
import com.cloud.vm.dao.SecondaryStorageVmDao;
import com.cloud.vm.dao.UserVmDao;
import com.cloud.vm.dao.VMInstanceDao;
@Local(value = VirtualMachineManager.class)
public class VirtualMachineManagerImpl implements VirtualMachineManager, Listener {
private static final Logger s_logger = Logger.getLogger(VirtualMachineManagerImpl.class);
String _name;
@Inject
protected StorageManager _storageMgr;
@Inject
protected NetworkManager _networkMgr;
@Inject
protected AgentManager _agentMgr;
@Inject
protected VMInstanceDao _vmDao;
@Inject
protected ServiceOfferingDao _offeringDao;
@Inject
protected VMTemplateDao _templateDao;
@Inject
protected UserDao _userDao;
@Inject
protected AccountDao _accountDao;
@Inject
protected DomainDao _domainDao;
@Inject
protected ClusterManager _clusterMgr;
@Inject
protected ItWorkDao _workDao;
@Inject
protected UserVmDao _userVmDao;
@Inject
protected DomainRouterDao _routerDao;
@Inject
protected ConsoleProxyDao _consoleDao;
@Inject
protected SecondaryStorageVmDao _secondaryDao;
@Inject
protected NicDao _nicsDao;
@Inject
protected AccountManager _accountMgr;
@Inject
protected HostDao _hostDao;
@Inject
protected AlertManager _alertMgr;
@Inject
protected GuestOSCategoryDao _guestOsCategoryDao;
@Inject
protected GuestOSDao _guestOsDao;
@Inject
protected VolumeDao _volsDao;
@Inject
protected ConsoleProxyManager _consoleProxyMgr;
@Inject
protected ConfigurationManager _configMgr;
@Inject
protected CapacityManager _capacityMgr;
@Inject
protected HighAvailabilityManager _haMgr;
@Inject
protected HostPodDao _podDao;
@Inject
protected DataCenterDao _dcDao;
@Inject
protected StoragePoolDao _storagePoolDao;
@Inject
protected HypervisorGuruManager _hvGuruMgr;
@Inject(adapter = DeploymentPlanner.class)
protected Adapters<DeploymentPlanner> _planners;
@Inject(adapter = HostAllocator.class)
protected Adapters<HostAllocator> _hostAllocators;
@Inject
protected ResourceManager _resourceMgr;
Map<VirtualMachine.Type, VirtualMachineGuru<? extends VMInstanceVO>> _vmGurus = new HashMap<VirtualMachine.Type, VirtualMachineGuru<? extends VMInstanceVO>>();
protected StateMachine2<State, VirtualMachine.Event, VirtualMachine> _stateMachine;
ScheduledExecutorService _executor = null;
protected int _operationTimeout;
protected int _retry;
protected long _nodeId;
protected long _cleanupWait;
protected long _cleanupInterval;
protected long _cancelWait;
protected long _opWaitInterval;
protected int _lockStateRetry;
protected boolean _forceStop;
@Override
public <T extends VMInstanceVO> void registerGuru(VirtualMachine.Type type, VirtualMachineGuru<T> guru) {
synchronized (_vmGurus) {
_vmGurus.put(type, guru);
}
}
@Override
@DB
public <T extends VMInstanceVO> T allocate(T vm, VMTemplateVO template, ServiceOfferingVO serviceOffering, Pair<? extends DiskOfferingVO, Long> rootDiskOffering,
List<Pair<DiskOfferingVO, Long>> dataDiskOfferings, List<Pair<NetworkVO, NicProfile>> networks, Map<VirtualMachineProfile.Param, Object> params, DeploymentPlan plan,
HypervisorType hyperType, Account owner) throws InsufficientCapacityException {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocating entries for VM: " + vm);
}
VirtualMachineProfileImpl<T> vmProfile = new VirtualMachineProfileImpl<T>(vm, template, serviceOffering, owner, params);
vm.setDataCenterId(plan.getDataCenterId());
if (plan.getPodId() != null) {
vm.setPodId(plan.getPodId());
}
assert (plan.getClusterId() == null && plan.getPoolId() == null) : "We currently don't support cluster and pool preset yet";
@SuppressWarnings("unchecked")
VirtualMachineGuru<T> guru = (VirtualMachineGuru<T>) _vmGurus.get(vm.getType());
Transaction txn = Transaction.currentTxn();
txn.start();
vm = guru.persist(vm);
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocating nics for " + vm);
}
try {
_networkMgr.allocate(vmProfile, networks);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Concurrent operation while trying to allocate resources for the VM", e);
}
if (dataDiskOfferings == null) {
dataDiskOfferings = new ArrayList<Pair<DiskOfferingVO, Long>>(0);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocaing disks for " + vm);
}
if (template.getFormat() == ImageFormat.ISO) {
_storageMgr.allocateRawVolume(Type.ROOT, "ROOT-" + vm.getId(), rootDiskOffering.first(), rootDiskOffering.second(), vm, owner);
} else if (template.getFormat() == ImageFormat.BAREMETAL) {
// Do nothing
} else {
_storageMgr.allocateTemplatedVolume(Type.ROOT, "ROOT-" + vm.getId(), rootDiskOffering.first(), template, vm, owner);
}
for (Pair<DiskOfferingVO, Long> offering : dataDiskOfferings) {
_storageMgr.allocateRawVolume(Type.DATADISK, "DATA-" + vm.getId(), offering.first(), offering.second(), vm, owner);
}
txn.commit();
if (s_logger.isDebugEnabled()) {
s_logger.debug("Allocation completed for VM: " + vm);
}
return vm;
}
@Override
public <T extends VMInstanceVO> T allocate(T vm, VMTemplateVO template, ServiceOfferingVO serviceOffering, Long rootSize, Pair<DiskOfferingVO, Long> dataDiskOffering,
List<Pair<NetworkVO, NicProfile>> networks, DeploymentPlan plan, HypervisorType hyperType, Account owner) throws InsufficientCapacityException {
List<Pair<DiskOfferingVO, Long>> diskOfferings = new ArrayList<Pair<DiskOfferingVO, Long>>(1);
if (dataDiskOffering != null) {
diskOfferings.add(dataDiskOffering);
}
return allocate(vm, template, serviceOffering, new Pair<DiskOfferingVO, Long>(serviceOffering, rootSize), diskOfferings, networks, null, plan, hyperType, owner);
}
@Override
public <T extends VMInstanceVO> T allocate(T vm, VMTemplateVO template, ServiceOfferingVO serviceOffering, List<Pair<NetworkVO, NicProfile>> networks, DeploymentPlan plan,
HypervisorType hyperType, Account owner) throws InsufficientCapacityException {
return allocate(vm, template, serviceOffering, new Pair<DiskOfferingVO, Long>(serviceOffering, null), null, networks, null, plan, hyperType, owner);
}
@SuppressWarnings("unchecked")
private <T extends VMInstanceVO> VirtualMachineGuru<T> getVmGuru(T vm) {
return (VirtualMachineGuru<T>) _vmGurus.get(vm.getType());
}
@SuppressWarnings("unchecked")
private <T extends VMInstanceVO> VirtualMachineGuru<T> getBareMetalVmGuru(T vm) {
return (VirtualMachineGuru<T>) _vmGurus.get(VirtualMachine.Type.UserBareMetal);
}
@Override
public <T extends VMInstanceVO> boolean expunge(T vm, User caller, Account account) throws ResourceUnavailableException {
try {
if (advanceExpunge(vm, caller, account)) {
// Mark vms as removed
remove(vm, caller, account);
return true;
} else {
s_logger.info("Did not expunge " + vm);
return false;
}
} catch (OperationTimedoutException e) {
throw new CloudRuntimeException("Operation timed out", e);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Concurrent operation ", e);
}
}
@Override
public <T extends VMInstanceVO> boolean advanceExpunge(T vm, User caller, Account account) throws ResourceUnavailableException, OperationTimedoutException, ConcurrentOperationException {
if (vm == null || vm.getRemoved() != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find vm or vm is destroyed: " + vm);
}
return true;
}
if (!this.advanceStop(vm, false, caller, account)) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to stop the VM so we can't expunge it.");
}
}
try {
if (!stateTransitTo(vm, VirtualMachine.Event.ExpungeOperation, vm.getHostId())) {
s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm);
return false;
}
} catch (NoTransitionException e) {
s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm);
return false;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Destroying vm " + vm);
}
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
_networkMgr.cleanupNics(profile);
// Clean up volumes based on the vm's instance id
_storageMgr.cleanupVolumes(vm.getId());
VirtualMachineGuru<T> guru = getVmGuru(vm);
guru.finalizeExpunge(vm);
if (s_logger.isDebugEnabled()) {
s_logger.debug("Expunged " + vm);
}
return true;
}
@Override
public boolean start() {
_executor.scheduleAtFixedRate(new CleanupTask(), _cleanupInterval, _cleanupInterval, TimeUnit.SECONDS);
cancelWorkItems(_nodeId);
return true;
}
@Override
public boolean stop() {
return true;
}
@Override
public boolean configure(String name, Map<String, Object> xmlParams) throws ConfigurationException {
_name = name;
ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
Map<String, String> params = configDao.getConfiguration(xmlParams);
_retry = NumbersUtil.parseInt(params.get(Config.StartRetry.key()), 10);
ReservationContextImpl.setComponents(_userDao, _domainDao, _accountDao);
VirtualMachineProfileImpl.setComponents(_offeringDao, _templateDao, _accountDao);
_cancelWait = NumbersUtil.parseLong(params.get(Config.VmOpCancelInterval.key()), 3600);
_cleanupWait = NumbersUtil.parseLong(params.get(Config.VmOpCleanupWait.key()), 3600);
_cleanupInterval = NumbersUtil.parseLong(params.get(Config.VmOpCleanupInterval.key()), 86400) * 1000;
_opWaitInterval = NumbersUtil.parseLong(params.get(Config.VmOpWaitInterval.key()), 120) * 1000;
_lockStateRetry = NumbersUtil.parseInt(params.get(Config.VmOpLockStateRetry.key()), 5);
_operationTimeout = NumbersUtil.parseInt(params.get(Config.Wait.key()), 1800) * 2;
_forceStop = Boolean.parseBoolean(params.get(Config.VmDestroyForcestop.key()));
_executor = Executors.newScheduledThreadPool(1, new NamedThreadFactory("Vm-Operations-Cleanup"));
_nodeId = _clusterMgr.getManagementNodeId();
_agentMgr.registerForHostEvents(this, true, true, true);
return true;
}
@Override
public String getName() {
return _name;
}
protected VirtualMachineManagerImpl() {
setStateMachine();
}
@Override
public <T extends VMInstanceVO> T start(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ResourceUnavailableException {
return start(vm, params, caller, account, null);
}
@Override
public <T extends VMInstanceVO> T start(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account, DeploymentPlan planToDeploy) throws InsufficientCapacityException,
ResourceUnavailableException {
try {
return advanceStart(vm, params, caller, account, planToDeploy);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to start a VM due to concurrent operation", e);
}
}
protected boolean checkWorkItems(VMInstanceVO vm, State state) throws ConcurrentOperationException {
while (true) {
ItWorkVO vo = _workDao.findByOutstandingWork(vm.getId(), state);
if (vo == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find work for VM: " + vm + " and state: " + state);
}
return true;
}
if (vo.getStep() == Step.Done) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Work for " + vm + " is " + vo.getStep());
}
return true;
}
if (vo.getSecondsTaskIsInactive() > _cancelWait) {
s_logger.warn("The task item for vm " + vm + " has been inactive for " + vo.getSecondsTaskIsInactive());
return false;
}
try {
Thread.sleep(_opWaitInterval);
} catch (InterruptedException e) {
s_logger.info("Waiting for " + vm + " but is interrupted");
throw new ConcurrentOperationException("Waiting for " + vm + " but is interrupted");
}
s_logger.debug("Waiting some more to make sure there's no activity on " + vm);
}
}
@DB
protected <T extends VMInstanceVO> Ternary<T, ReservationContext, ItWorkVO> changeToStartState(VirtualMachineGuru<T> vmGuru, T vm, User caller, Account account)
throws ConcurrentOperationException {
long vmId = vm.getId();
ItWorkVO work = new ItWorkVO(UUID.randomUUID().toString(), _nodeId, State.Starting, vm.getType(), vm.getId());
int retry = _lockStateRetry;
while (retry-- != 0) {
Transaction txn = Transaction.currentTxn();
Ternary<T, ReservationContext, ItWorkVO> result = null;
txn.start();
try {
Journal journal = new Journal.LogJournal("Creating " + vm, s_logger);
work = _workDao.persist(work);
ReservationContextImpl context = new ReservationContextImpl(work.getId(), journal, caller, account);
if (stateTransitTo(vm, Event.StartRequested, null, work.getId())) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Successfully transitioned to start state for " + vm + " reservation id = " + work.getId());
}
result = new Ternary<T, ReservationContext, ItWorkVO>(vmGuru.findById(vmId), context, work);
txn.commit();
return result;
}
} catch (NoTransitionException e) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to transition into Starting state due to " + e.getMessage());
}
} finally {
if (result == null) {
txn.rollback();
}
}
VMInstanceVO instance = _vmDao.findById(vmId);
if (instance == null) {
throw new ConcurrentOperationException("Unable to acquire lock on " + vm);
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Determining why we're unable to update the state to Starting for " + instance + ". Retry=" + retry);
}
State state = instance.getState();
if (state == State.Running) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM is already started: " + vm);
}
return null;
}
if (state.isTransitional()) {
if (!checkWorkItems(vm, state)) {
throw new ConcurrentOperationException("There are concurrent operations on " + vm);
} else {
continue;
}
}
if (state != State.Stopped) {
s_logger.debug("VM " + vm + " is not in a state to be started: " + state);
return null;
}
}
throw new ConcurrentOperationException("Unable to change the state of " + vm);
}
protected <T extends VMInstanceVO> boolean changeState(T vm, Event event, Long hostId, ItWorkVO work, Step step) throws NoTransitionException {
// FIXME: We should do this better.
Step previousStep = work.getStep();
_workDao.updateStep(work, step);
boolean result = false;
try {
result = stateTransitTo(vm, event, hostId);
return result;
} finally {
if (!result) {
_workDao.updateStep(work, previousStep);
}
}
}
@Override
public <T extends VMInstanceVO> T advanceStart(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException,
ConcurrentOperationException, ResourceUnavailableException {
return advanceStart(vm, params, caller, account, null);
}
@Override
public <T extends VMInstanceVO> T advanceStart(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account, DeploymentPlan planToDeploy)
throws InsufficientCapacityException, ConcurrentOperationException, ResourceUnavailableException {
long vmId = vm.getId();
VirtualMachineGuru<T> vmGuru;
if (vm.getHypervisorType() == HypervisorType.BareMetal) {
vmGuru = getBareMetalVmGuru(vm);
} else {
vmGuru = getVmGuru(vm);
}
vm = vmGuru.findById(vm.getId());
Ternary<T, ReservationContext, ItWorkVO> start = changeToStartState(vmGuru, vm, caller, account);
if (start == null) {
return vmGuru.findById(vmId);
}
vm = start.first();
ReservationContext ctx = start.second();
ItWorkVO work = start.third();
T startedVm = null;
ServiceOfferingVO offering = _offeringDao.findById(vm.getServiceOfferingId());
VMTemplateVO template = _templateDao.findById(vm.getTemplateId());
if (s_logger.isDebugEnabled()) {
s_logger.debug("Trying to deploy VM, vm has dcId: " + vm.getDataCenterIdToDeployIn() + " and podId: " + vm.getPodIdToDeployIn());
}
DataCenterDeployment plan = new DataCenterDeployment(vm.getDataCenterIdToDeployIn(), vm.getPodIdToDeployIn(), null, null, null, null);
if(planToDeploy != null && planToDeploy.getDataCenterId() != 0){
if (s_logger.isDebugEnabled()) {
s_logger.debug("advanceStart: DeploymentPlan is provided, using dcId:" + planToDeploy.getDataCenterId() + ", podId: " + planToDeploy.getPodId() + ", clusterId: "
+ planToDeploy.getClusterId() + ", hostId: " + planToDeploy.getHostId() + ", poolId: " + planToDeploy.getPoolId());
}
plan = (DataCenterDeployment) planToDeploy;
}
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(vm.getHypervisorType());
boolean canRetry = true;
try {
Journal journal = start.second().getJournal();
ExcludeList avoids = null;
if (planToDeploy != null) {
avoids = planToDeploy.getAvoids();
}
if (avoids == null) {
avoids = new ExcludeList();
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Deploy avoids pods: " + avoids.getPodsToAvoid() + ", clusters: " + avoids.getClustersToAvoid() + ", hosts: " + avoids.getHostsToAvoid());
}
// edit plan if this vm's ROOT volume is in READY state already
List<VolumeVO> vols = _volsDao.findReadyRootVolumesByInstance(vm.getId());
boolean planChangedByVolume = false;
boolean rootVolumeisRecreatable = false;
DataCenterDeployment originalPlan = plan;
for (VolumeVO vol : vols) {
// make sure if the templateId is unchanged. If it is changed,
// let planner
// reassign pool for the volume even if it ready.
Long volTemplateId = vol.getTemplateId();
if (volTemplateId != null && volTemplateId.longValue() != template.getId()) {
if (s_logger.isDebugEnabled()) {
s_logger.debug(vol + " of " + vm + " is READY, but template ids don't match, let the planner reassign a new pool");
}
continue;
}
StoragePoolVO pool = _storagePoolDao.findById(vol.getPoolId());
if (!pool.isInMaintenance()) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Root volume is ready, need to place VM in volume's cluster");
}
long rootVolDcId = pool.getDataCenterId();
Long rootVolPodId = pool.getPodId();
Long rootVolClusterId = pool.getClusterId();
if (planToDeploy != null && planToDeploy.getDataCenterId() != 0) {
Long clusterIdSpecified = planToDeploy.getClusterId();
if (clusterIdSpecified != null && rootVolClusterId != null) {
if (rootVolClusterId.longValue() != clusterIdSpecified.longValue()) {
// cannot satisfy the plan passed in to the
// planner
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cannot satisfy the deployment plan passed in since the ready Root volume is in different cluster. volume's cluster: " + rootVolClusterId
+ ", cluster specified: " + clusterIdSpecified);
}
throw new ResourceUnavailableException("Root volume is ready in different cluster, Deployment plan provided cannot be satisfied, unable to create a deployment for "
+ vm, Cluster.class, clusterIdSpecified);
}
}
plan = new DataCenterDeployment(planToDeploy.getDataCenterId(), planToDeploy.getPodId(), planToDeploy.getClusterId(), planToDeploy.getHostId(), vol.getPoolId(), null);
}else{
plan = new DataCenterDeployment(rootVolDcId, rootVolPodId, rootVolClusterId, null, vol.getPoolId(), null);
if (s_logger.isDebugEnabled()) {
s_logger.debug(vol + " is READY, changing deployment plan to use this pool's dcId: " + rootVolDcId + " , podId: " + rootVolPodId + " , and clusterId: " + rootVolClusterId);
}
planChangedByVolume = true;
if (vol.isRecreatable()) {
rootVolumeisRecreatable = true;
}
}
}
}
int retry = _retry;
while (retry-- != 0) { // It's != so that it can match -1.
VirtualMachineProfileImpl<T> vmProfile = new VirtualMachineProfileImpl<T>(vm, template, offering, account, params);
DeployDestination dest = null;
for (DeploymentPlanner planner : _planners) {
if (planner.canHandle(vmProfile, plan, avoids)) {
dest = planner.plan(vmProfile, plan, avoids);
} else {
continue;
}
if (dest != null) {
avoids.addHost(dest.getHost().getId());
journal.record("Deployment found ", vmProfile, dest);
break;
}
}
if (dest == null) {
if (planChangedByVolume) {
if (rootVolumeisRecreatable) {
plan = originalPlan;
planChangedByVolume = false;
continue;
}
}
throw new InsufficientServerCapacityException("Unable to create a deployment for " + vmProfile, DataCenter.class, plan.getDataCenterId());
}
long destHostId = dest.getHost().getId();
vm.setPodId(dest.getPod().getId());
try {
if (!changeState(vm, Event.OperationRetry, destHostId, work, Step.Prepare)) {
throw new ConcurrentOperationException("Unable to update the state of the Virtual Machine");
}
} catch (NoTransitionException e1) {
throw new ConcurrentOperationException(e1.getMessage());
}
try {
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM is being started in podId: " + vm.getPodIdToDeployIn());
}
_networkMgr.prepare(vmProfile, dest, ctx);
if (vm.getHypervisorType() != HypervisorType.BareMetal) {
_storageMgr.prepare(vmProfile, dest);
}
vmGuru.finalizeVirtualMachineProfile(vmProfile, dest, ctx);
VirtualMachineTO vmTO = hvGuru.implement(vmProfile);
Commands cmds = new Commands(OnError.Stop);
cmds.addCommand(new StartCommand(vmTO));
vmGuru.finalizeDeployment(cmds, vmProfile, dest, ctx);
work = _workDao.findById(work.getId());
if (work == null || work.getStep() != Step.Prepare) {
throw new ConcurrentOperationException("Work steps have been changed: " + work);
}
_workDao.updateStep(work, Step.Starting);
_agentMgr.send(destHostId, cmds);
_workDao.updateStep(work, Step.Started);
StartAnswer startAnswer = cmds.getAnswer(StartAnswer.class);
if (startAnswer != null && startAnswer.getResult()) {
String host_guid = startAnswer.getHost_guid();
if( host_guid != null ) {
HostVO finalHost = _resourceMgr.findHostByGuid(host_guid);
if ( finalHost == null ) {
throw new CloudRuntimeException("Host Guid " + host_guid + " doesn't exist in DB, something wrong here");
}
destHostId = finalHost.getId();
}
if (vmGuru.finalizeStart(vmProfile, destHostId, cmds, ctx)) {
if (!changeState(vm, Event.OperationSucceeded, destHostId, work, Step.Done)) {
throw new ConcurrentOperationException("Unable to transition to a new state.");
}
startedVm = vm;
if (s_logger.isDebugEnabled()) {
s_logger.debug("Start completed for VM " + vm);
}
return startedVm;
} else {
if (s_logger.isDebugEnabled()) {
s_logger.info("The guru did not like the answers so stopping " + vm);
}
StopCommand cmd = new StopCommand(vm.getInstanceName());
StopAnswer answer = (StopAnswer) _agentMgr.easySend(destHostId, cmd);
if (answer == null || !answer.getResult()) {
s_logger.warn("Unable to stop " + vm + " due to " + (answer != null ? answer.getDetails() : "no answers"));
canRetry = false;
_haMgr.scheduleStop(vm, destHostId, WorkType.ForceStop);
throw new ExecutionException("Unable to stop " + vm + " so we are unable to retry the start operation");
}
}
}
s_logger.info("Unable to start VM on " + dest.getHost() + " due to " + (startAnswer == null ? " no start answer" : startAnswer.getDetails()));
} catch (OperationTimedoutException e) {
s_logger.debug("Unable to send the start command to host " + dest.getHost());
if (e.isActive()) {
_haMgr.scheduleStop(vm, destHostId, WorkType.CheckStop);
}
canRetry = false;
throw new AgentUnavailableException("Unable to start " + vm.getHostName(), destHostId, e);
} catch (ResourceUnavailableException e) {
s_logger.info("Unable to contact resource.", e);
if (!avoids.add(e)) {
if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
throw e;
} else {
s_logger.warn("unexpected ResourceUnavailableException : " + e.getScope().getName(), e);
throw e;
}
}
} catch (InsufficientCapacityException e) {
s_logger.info("Insufficient capacity ", e);
if (!avoids.add(e)) {
if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
throw e;
} else {
s_logger.warn("unexpected InsufficientCapacityException : " + e.getScope().getName(), e);
}
}
} catch (Exception e) {
s_logger.error("Failed to start instance " + vm, e);
throw new AgentUnavailableException("Unable to start instance", destHostId, e);
} finally {
if (startedVm == null && canRetry) {
_workDao.updateStep(work, Step.Release);
cleanup(vmGuru, vmProfile, work, Event.OperationFailed, false, caller, account);
}
}
}
} finally {
if (startedVm == null) {
if (canRetry) {
try {
changeState(vm, Event.OperationFailed, null, work, Step.Done);
} catch (NoTransitionException e) {
throw new ConcurrentOperationException(e.getMessage());
}
}
}
}
return startedVm;
}
@Override
public <T extends VMInstanceVO> boolean stop(T vm, User user, Account account) throws ResourceUnavailableException {
try {
return advanceStop(vm, false, user, account);
} catch (OperationTimedoutException e) {
throw new AgentUnavailableException("Unable to stop vm because the operation to stop timed out", vm.getHostId(), e);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to stop vm because of a concurrent operation", e);
}
}
protected <T extends VMInstanceVO> boolean sendStop(VirtualMachineGuru<T> guru, VirtualMachineProfile<T> profile, boolean force) {
VMInstanceVO vm = profile.getVirtualMachine();
StopCommand stop = new StopCommand(vm, vm.getInstanceName(), null);
try {
Answer answer = _agentMgr.send(vm.getHostId(), stop);
if (!answer.getResult()) {
s_logger.debug("Unable to stop VM due to " + answer.getDetails());
return false;
}
guru.finalizeStop(profile, (StopAnswer) answer);
} catch (AgentUnavailableException e) {
if (!force) {
return false;
}
} catch (OperationTimedoutException e) {
if (!force) {
return false;
}
}
return true;
}
protected <T extends VMInstanceVO> boolean cleanup(VirtualMachineGuru<T> guru, VirtualMachineProfile<T> profile, ItWorkVO work, Event event, boolean force, User user, Account account) {
T vm = profile.getVirtualMachine();
State state = vm.getState();
s_logger.debug("Cleaning up resources for the vm " + vm + " in " + state + " state");
if (state == State.Starting) {
Step step = work.getStep();
if (step == Step.Starting && !force) {
s_logger.warn("Unable to cleanup vm " + vm + "; work state is incorrect: " + step);
return false;
}
if (step == Step.Started || step == Step.Starting) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
s_logger.warn("Failed to stop vm " + vm + " in " + State.Starting + " state as a part of cleanup process");
return false;
}
}
}
if (step != Step.Release && step != Step.Prepare && step != Step.Started && step != Step.Starting) {
s_logger.debug("Cleanup is not needed for vm " + vm + "; work state is incorrect: " + step);
return true;
}
} else if (state == State.Stopping) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
s_logger.warn("Failed to stop vm " + vm + " in " + State.Stopping + " state as a part of cleanup process");
return false;
}
}
} else if (state == State.Migrating) {
if (vm.getHostId() != null) {
if (!sendStop(guru, profile, force)) {
s_logger.warn("Failed to stop vm " + vm + " in " + State.Migrating + " state as a part of cleanup process");
return false;
}
}
if (vm.getLastHostId() != null) {
if (!sendStop(guru, profile, force)) {
s_logger.warn("Failed to stop vm " + vm + " in " + State.Migrating + " state as a part of cleanup process");
return false;
}
}
} else if (state == State.Running) {
if (!sendStop(guru, profile, force)) {
s_logger.warn("Failed to stop vm " + vm + " in " + State.Running + " state as a part of cleanup process");
return false;
}
}
_networkMgr.release(profile, force);
_storageMgr.release(profile);
s_logger.debug("Successfully cleanued up resources for the vm " + vm + " in " + state + " state");
return true;
}
@Override
public <T extends VMInstanceVO> boolean advanceStop(T vm, boolean forced, User user, Account account) throws AgentUnavailableException, OperationTimedoutException, ConcurrentOperationException {
State state = vm.getState();
if (state == State.Stopped) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM is already stopped: " + vm);
}
return true;
}
if (state == State.Destroyed || state == State.Expunging || state == State.Error) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Stopped called on " + vm + " but the state is " + state);
}
return true;
}
// grab outstanding work item if any
ItWorkVO work = _workDao.findByOutstandingWork(vm.getId(), vm.getState());
if (work != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Found an outstanding work item for this vm " + vm + " with state:" + vm.getState() + ", work id:" + work.getId());
}
}
Long hostId = vm.getHostId();
if (hostId == null) {
if (!forced) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("HostId is null but this is not a forced stop, cannot stop vm " + vm + " with state:" + vm.getState());
}
return false;
}
try {
stateTransitTo(vm, Event.AgentReportStopped, null, null);
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
}
// mark outstanding work item if any as done
if (work != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Updating work item to Done, id:" + work.getId());
}
work.setStep(Step.Done);
_workDao.update(work.getId(), work);
}
return true;
}
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
try {
if (!stateTransitTo(vm, Event.StopRequested, vm.getHostId())) {
throw new ConcurrentOperationException("VM is being operated on.");
}
} catch (NoTransitionException e1) {
if (!forced) {
throw new CloudRuntimeException("We cannot stop " + vm + " when it is in state " + vm.getState());
}
boolean doCleanup = false;
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to transition the state but we're moving on because it's forced stop");
}
if (state == State.Starting || state == State.Migrating) {
if (work != null) {
doCleanup = true;
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to cleanup VM: " + vm + " ,since outstanding work item is not found");
}
throw new CloudRuntimeException("Work item not found, We cannot stop " + vm + " when it is in state " + vm.getState());
}
} else if (state == State.Stopping) {
doCleanup = true;
}
if (doCleanup) {
if (cleanup(vmGuru, new VirtualMachineProfileImpl<T>(vm), work, Event.StopRequested, forced, user, account)) {
try {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Updating work item to Done, id:" + work.getId());
}
return changeState(vm, Event.AgentReportStopped, null, work, Step.Done);
} catch (NoTransitionException e) {
s_logger.warn("Unable to cleanup " + vm);
return false;
}
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Failed to cleanup VM: " + vm);
}
throw new CloudRuntimeException("Failed to cleanup " + vm + " , current state " + vm.getState());
}
}
}
if (vm.getState() != State.Stopping) {
throw new CloudRuntimeException("We cannot proceed with stop VM " + vm + " since it is not in 'Stopping' state, current state: " + vm.getState());
}
String routerPrivateIp = null;
if (vm.getType() == VirtualMachine.Type.DomainRouter) {
routerPrivateIp = vm.getPrivateIpAddress();
}
StopCommand stop = new StopCommand(vm, vm.getInstanceName(), null, routerPrivateIp);
boolean stopped = false;
StopAnswer answer = null;
try {
answer = (StopAnswer) _agentMgr.send(vm.getHostId(), stop);
stopped = answer.getResult();
if (!stopped) {
throw new CloudRuntimeException("Unable to stop the virtual machine due to " + answer.getDetails());
}
vmGuru.finalizeStop(profile, answer);
} catch (AgentUnavailableException e) {
} catch (OperationTimedoutException e) {
} finally {
if (!stopped) {
if (!forced) {
s_logger.warn("Unable to stop vm " + vm);
try {
stateTransitTo(vm, Event.OperationFailed, vm.getHostId());
} catch (NoTransitionException e) {
s_logger.warn("Unable to transition the state " + vm);
}
return false;
} else {
s_logger.warn("Unable to actually stop " + vm + " but continue with release because it's a force stop");
vmGuru.finalizeStop(profile, answer);
}
}
}
if (s_logger.isDebugEnabled()) {
s_logger.debug(vm + " is stopped on the host. Proceeding to release resource held.");
}
try {
_networkMgr.release(profile, forced);
s_logger.debug("Successfully released network resources for the vm " + vm);
} catch (Exception e) {
s_logger.warn("Unable to release some network resources.", e);
}
try {
if (vm.getHypervisorType() != HypervisorType.BareMetal) {
_storageMgr.release(profile);
s_logger.debug("Successfully released storage resources for the vm " + vm);
}
} catch (Exception e) {
s_logger.warn("Unable to release storage resources.", e);
}
try {
if (work != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Updating the outstanding work item to Done, id:" + work.getId());
}
work.setStep(Step.Done);
_workDao.update(work.getId(), work);
}
return stateTransitTo(vm, Event.OperationSucceeded, null, null);
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
return false;
}
}
private void setStateMachine() {
_stateMachine = VirtualMachine.State.getStateMachine();
}
protected boolean stateTransitTo(VMInstanceVO vm, VirtualMachine.Event e, Long hostId, String reservationId) throws NoTransitionException {
vm.setReservationId(reservationId);
return _stateMachine.transitTo(vm, e, new Pair<Long, Long>(vm.getHostId(), hostId), _vmDao);
}
@Override
public boolean stateTransitTo(VMInstanceVO vm, VirtualMachine.Event e, Long hostId) throws NoTransitionException {
State oldState = vm.getState();
if (oldState == State.Starting) {
if (e == Event.OperationSucceeded) {
vm.setLastHostId(hostId);
}
} else if (oldState == State.Stopping) {
if (e == Event.OperationSucceeded) {
vm.setLastHostId(vm.getHostId());
}
}
return _stateMachine.transitTo(vm, e, new Pair<Long, Long>(vm.getHostId(), hostId), _vmDao);
}
@Override
public <T extends VMInstanceVO> boolean remove(T vm, User user, Account caller) {
// expunge the corresponding nics
VirtualMachineProfile<T> profile = new VirtualMachineProfileImpl<T>(vm);
_networkMgr.expungeNics(profile);
s_logger.trace("Nics of the vm " + vm + " are expunged successfully");
return _vmDao.remove(vm.getId());
}
@Override
public <T extends VMInstanceVO> boolean destroy(T vm, User user, Account caller) throws AgentUnavailableException, OperationTimedoutException, ConcurrentOperationException {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Destroying vm " + vm);
}
if (vm == null || vm.getState() == State.Destroyed || vm.getState() == State.Expunging || vm.getRemoved() != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find vm or vm is destroyed: " + vm);
}
return true;
}
if (!advanceStop(vm, _forceStop, user, caller)) {
s_logger.debug("Unable to stop " + vm);
return false;
}
try {
if (!stateTransitTo(vm, VirtualMachine.Event.DestroyRequested, vm.getHostId())) {
s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm);
return false;
}
} catch (NoTransitionException e) {
s_logger.debug(e.getMessage());
return false;
}
return true;
}
protected boolean checkVmOnHost(VirtualMachine vm, long hostId) throws AgentUnavailableException, OperationTimedoutException {
CheckVirtualMachineAnswer answer = (CheckVirtualMachineAnswer) _agentMgr.send(hostId, new CheckVirtualMachineCommand(vm.getInstanceName()));
if (!answer.getResult() || answer.getState() == State.Stopped) {
return false;
}
return true;
}
@Override
public <T extends VMInstanceVO> T storageMigration(T vm, StoragePool destPool) {
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
long vmId = vm.getId();
vm = vmGuru.findById(vmId);
try {
stateTransitTo(vm, VirtualMachine.Event.StorageMigrationRequested, null);
} catch (NoTransitionException e) {
s_logger.debug("Unable to migrate vm: " + e.toString());
throw new CloudRuntimeException("Unable to migrate vm: " + e.toString());
}
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
boolean migrationResult = false;
try {
migrationResult = _storageMgr.StorageMigration(profile, destPool);
if (migrationResult) {
//if the vm is migrated to different pod in basic mode, need to reallocate ip
if (vm.getPodIdToDeployIn() != destPool.getPodId()) {
DataCenterDeployment plan = new DataCenterDeployment(vm.getDataCenterIdToDeployIn(), destPool.getPodId(), null, null, null, null);
VirtualMachineProfileImpl<T> vmProfile = new VirtualMachineProfileImpl<T>(vm, null, null, null, null);
_networkMgr.reallocate(vmProfile, plan);
}
//when start the vm next time, don;'t look at last_host_id, only choose the host based on volume/storage pool
vm.setLastHostId(null);
vm.setPodId(destPool.getPodId());
} else {
s_logger.debug("Storage migration failed");
}
} catch (ConcurrentOperationException e) {
s_logger.debug("Failed to migration: " + e.toString());
throw new CloudRuntimeException("Failed to migration: " + e.toString());
} catch (InsufficientVirtualNetworkCapcityException e) {
s_logger.debug("Failed to migration: " + e.toString());
throw new CloudRuntimeException("Failed to migration: " + e.toString());
} catch (InsufficientAddressCapacityException e) {
s_logger.debug("Failed to migration: " + e.toString());
throw new CloudRuntimeException("Failed to migration: " + e.toString());
} catch (InsufficientCapacityException e) {
s_logger.debug("Failed to migration: " + e.toString());
throw new CloudRuntimeException("Failed to migration: " + e.toString());
} finally {
try {
stateTransitTo(vm, VirtualMachine.Event.AgentReportStopped, null);
} catch (NoTransitionException e) {
s_logger.debug("Failed to change vm state: " + e.toString());
throw new CloudRuntimeException("Failed to change vm state: " + e.toString());
}
}
return vm;
}
@Override
public <T extends VMInstanceVO> T migrate(T vm, long srcHostId, DeployDestination dest) throws ResourceUnavailableException, ConcurrentOperationException, ManagementServerException,
VirtualMachineMigrationException {
s_logger.info("Migrating " + vm + " to " + dest);
long dstHostId = dest.getHost().getId();
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: " + dest.getHost().getId());
throw new CloudRuntimeException("Source and destination host are not in same cluster, unable to migrate to host: " + dest.getHost().getId());
}
VirtualMachineGuru<T> vmGuru = getVmGuru(vm);
long vmId = vm.getId();
vm = vmGuru.findById(vmId);
if (vm == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find the vm " + vm);
}
throw new ManagementServerException("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 VirtualMachineMigrationException("VM is not Running, unable to migrate the vm currently " + vm + " , current state: " + vm.getState().toString());
}
short alertType = AlertManager.ALERT_TYPE_USERVM_MIGRATE;
if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_DOMAIN_ROUTER_MIGRATE;
} else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_CONSOLE_PROXY_MIGRATE;
}
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
_networkMgr.prepareNicForMigration(profile, dest);
_storageMgr.prepareForMigration(profile, dest);
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(vm.getHypervisorType());
VirtualMachineTO to = hvGuru.implement(profile);
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);
PrepareForMigrationAnswer pfma = null;
try {
pfma = (PrepareForMigrationAnswer) _agentMgr.send(dstHostId, pfmc);
if (!pfma.getResult()) {
String msg = "Unable to prepare for migration due to " + pfma.getDetails();
pfma = null;
throw new AgentUnavailableException(msg, dstHostId);
}
} catch (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 (NoTransitionException e1) {
s_logger.info("Migration cancelled because " + e1.getMessage());
throw new ConcurrentOperationException("Migration cancelled because " + e1.getMessage());
}
boolean migrated = false;
try {
boolean isWindows = _guestOsCategoryDao.findById(_guestOsDao.findById(vm.getGuestOSId()).getCategoryId()).getName().equalsIgnoreCase("Windows");
MigrateCommand mc = new MigrateCommand(vm.getInstanceName(), dest.getHost().getPrivateIpAddress(), isWindows);
mc.setHostGuid(dest.getHost().getGuid());
try {
MigrateAnswer ma = (MigrateAnswer) _agentMgr.send(vm.getLastHostId(), mc);
if (!ma.getResult()) {
s_logger.error("Unable to migrate due to " + ma.getDetails());
return null;
}
} catch (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 (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 (AgentUnavailableException e) {
s_logger.error("AgentUnavailableException while cleanup on source host: " + srcHostId);
}
cleanup(vmGuru, new VirtualMachineProfileImpl<T>(vm), work, Event.AgentReportStopped, true, _accountMgr.getSystemUser(), _accountMgr.getSystemAccount());
return null;
}
} catch (OperationTimedoutException e) {
}
migrated = true;
return vm;
} 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 (AgentUnavailableException ae) {
s_logger.info("Looks like the destination Host is unavailable for cleanup");
}
try {
stateTransitTo(vm, Event.OperationFailed, srcHostId);
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
}
}
work.setStep(Step.Done);
_workDao.update(work.getId(), work);
}
}
protected void cancelWorkItems(long nodeId) {
GlobalLock scanLock = GlobalLock.getInternLock("vmmgr.cancel.workitem");
try {
if (scanLock.lock(3)) {
try {
List<ItWorkVO> works = _workDao.listWorkInProgressFor(nodeId);
for (ItWorkVO work : works) {
s_logger.info("Handling unfinished work item: " + work);
try {
VMInstanceVO vm = _vmDao.findById(work.getInstanceId());
if (vm != null) {
if (work.getType() == State.Starting) {
_haMgr.scheduleRestart(vm, true);
work.setManagementServerId(_nodeId);
_workDao.update(work.getId(), work);
} else if (work.getType() == State.Stopping) {
_haMgr.scheduleStop(vm, vm.getHostId(), WorkType.CheckStop);
work.setManagementServerId(_nodeId);
_workDao.update(work.getId(), work);
} else if (work.getType() == State.Migrating) {
_haMgr.scheduleMigration(vm);
work.setStep(Step.Done);
_workDao.update(work.getId(), work);
}
}
} catch (Exception e) {
s_logger.error("Error while handling " + work, e);
}
}
} finally {
scanLock.unlock();
}
}
} finally {
scanLock.releaseRef();
}
}
@Override
public boolean migrateAway(VirtualMachine.Type vmType, long vmId, long srcHostId) throws InsufficientServerCapacityException, VirtualMachineMigrationException {
VirtualMachineGuru<? extends VMInstanceVO> vmGuru = _vmGurus.get(vmType);
VMInstanceVO vm = vmGuru.findById(vmId);
if (vm == null) {
s_logger.debug("Unable to find a VM for " + vmId);
return true;
}
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
Long hostId = vm.getHostId();
if (hostId == null) {
s_logger.debug("Unable to migrate because the VM doesn't have a host id: " + vm);
return true;
}
Host host = _hostDao.findById(hostId);
DataCenterDeployment plan = new DataCenterDeployment(host.getDataCenterId(), host.getPodId(), host.getClusterId(), null, null, null);
ExcludeList excludes = new ExcludeList();
excludes.addHost(hostId);
DeployDestination dest = null;
while (true) {
for (DeploymentPlanner planner : _planners) {
if (planner.canHandle(profile, plan, excludes)) {
dest = planner.plan(profile, plan, excludes);
} else {
continue;
}
if (dest != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Planner " + planner + " found " + dest + " for migrating to.");
}
break;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Planner " + planner + " was unable to find anything.");
}
}
if (dest == null) {
throw new InsufficientServerCapacityException("Unable to find a server to migrate to.", host.getClusterId());
}
excludes.addHost(dest.getHost().getId());
VMInstanceVO vmInstance = null;
try {
vmInstance = migrate(vm, srcHostId, dest);
} catch (ResourceUnavailableException e) {
s_logger.debug("Unable to migrate to unavailable " + dest);
} catch (ConcurrentOperationException e) {
s_logger.debug("Unable to migrate VM due to: " + e.getMessage());
} catch (ManagementServerException e) {
s_logger.debug("Unable to migrate VM: " + e.getMessage());
} catch (VirtualMachineMigrationException e) {
s_logger.debug("Got VirtualMachineMigrationException, Unable to migrate: " + e.getMessage());
if (vm.getState() == State.Starting) {
s_logger.debug("VM seems to be still Starting, we should retry migration later");
throw e;
} else {
s_logger.debug("Unable to migrate VM, VM is not in Running or even Starting state, current state: " + vm.getState().toString());
}
}
if (vmInstance != null) {
return true;
}
try {
boolean result = advanceStop(vm, true, _accountMgr.getSystemUser(), _accountMgr.getSystemAccount());
return result;
} catch (ResourceUnavailableException e) {
s_logger.debug("Unable to stop VM due to " + e.getMessage());
} catch (ConcurrentOperationException e) {
s_logger.debug("Unable to stop VM due to " + e.getMessage());
} catch (OperationTimedoutException e) {
s_logger.debug("Unable to stop VM due to " + e.getMessage());
}
return false;
}
}
protected class CleanupTask implements Runnable {
@Override
public void run() {
s_logger.trace("VM Operation Thread Running");
try {
_workDao.cleanup(_cleanupWait);
} catch (Exception e) {
s_logger.error("VM Operations failed due to ", e);
}
}
}
@Override
public boolean isVirtualMachineUpgradable(UserVm vm, ServiceOffering offering) {
Enumeration<HostAllocator> en = _hostAllocators.enumeration();
boolean isMachineUpgradable = true;
while (isMachineUpgradable && en.hasMoreElements()) {
final HostAllocator allocator = en.nextElement();
isMachineUpgradable = allocator.isVirtualMachineUpgradable(vm, offering);
}
return isMachineUpgradable;
}
@Override
public <T extends VMInstanceVO> T reboot(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException, ResourceUnavailableException {
try {
return advanceReboot(vm, params, caller, account);
} catch (ConcurrentOperationException e) {
throw new CloudRuntimeException("Unable to reboot a VM due to concurrent operation", e);
}
}
@Override
public <T extends VMInstanceVO> T advanceReboot(T vm, Map<VirtualMachineProfile.Param, Object> params, User caller, Account account) throws InsufficientCapacityException,
ConcurrentOperationException, ResourceUnavailableException {
T rebootedVm = null;
DataCenter dc = _configMgr.getZone(vm.getDataCenterIdToDeployIn());
Host host = _hostDao.findById(vm.getHostId());
Cluster cluster = null;
if (host != null) {
cluster = _configMgr.getCluster(host.getClusterId());
}
HostPodVO pod = _configMgr.getPod(host.getPodId());
DeployDestination dest = new DeployDestination(dc, pod, cluster, host);
try {
Commands cmds = new Commands(OnError.Stop);
cmds.addCommand(new RebootCommand(vm.getInstanceName()));
_agentMgr.send(host.getId(), cmds);
Answer rebootAnswer = cmds.getAnswer(RebootAnswer.class);
if (rebootAnswer != null && rebootAnswer.getResult()) {
rebootedVm = vm;
return rebootedVm;
}
s_logger.info("Unable to reboot VM " + vm + " on " + dest.getHost() + " due to " + (rebootAnswer == null ? " no reboot answer" : rebootAnswer.getDetails()));
} catch (OperationTimedoutException e) {
s_logger.warn("Unable to send the reboot command to host " + dest.getHost() + " for the vm " + vm + " due to operation timeout", e);
throw new CloudRuntimeException("Failed to reboot the vm on host " + dest.getHost());
}
return rebootedVm;
}
@Override
public VMInstanceVO findByIdAndType(VirtualMachine.Type type, long vmId) {
VirtualMachineGuru<? extends VMInstanceVO> guru = _vmGurus.get(type);
return guru.findById(vmId);
}
public Command cleanup(String vmName) {
return new StopCommand(vmName);
}
public Commands fullHostSync(final long hostId, StartupRoutingCommand startup) {
Commands commands = new Commands(OnError.Continue);
Map<Long, AgentVmInfo> infos = convertToInfos(startup);
final List<? extends VMInstanceVO> vms = _vmDao.listByHostId(hostId);
s_logger.debug("Found " + vms.size() + " VMs for host " + hostId);
for (VMInstanceVO vm : vms) {
AgentVmInfo info = infos.remove(vm.getId());
VMInstanceVO castedVm = null;
if (info == null) {
info = new AgentVmInfo(vm.getInstanceName(), getVmGuru(vm), vm, State.Stopped);
castedVm = info.guru.findById(vm.getId());
} else {
castedVm = info.vm;
}
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(castedVm.getHypervisorType());
Command command = compareState(hostId, castedVm, info, true, hvGuru.trackVmHostChange());
if (command != null) {
commands.addCommand(command);
}
}
for (final AgentVmInfo left : infos.values()) {
boolean found = false;
for (VirtualMachineGuru<? extends VMInstanceVO> vmGuru : _vmGurus.values()) {
VMInstanceVO vm = vmGuru.findByName(left.name);
if (vm != null) {
found = true;
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(vm.getHypervisorType());
if(hvGuru.trackVmHostChange()) {
Command command = compareState(hostId, vm, left, true, true);
if (command != null) {
commands.addCommand(command);
}
} else {
s_logger.warn("Stopping a VM, VM " + left.name + " migrate from Host " + vm.getHostId() + " to Host " + hostId );
commands.addCommand(cleanup(left.name));
}
break;
}
}
if ( ! found ) {
s_logger.warn("Stopping a VM that we have no record of: " + left.name);
commands.addCommand(cleanup(left.name));
}
}
return commands;
}
public Commands deltaHostSync(long hostId, Map<String, State> newStates) {
Map<Long, AgentVmInfo> states = convertDeltaToInfos(newStates);
Commands commands = new Commands(OnError.Continue);
for (Map.Entry<Long, AgentVmInfo> entry : states.entrySet()) {
AgentVmInfo info = entry.getValue();
VMInstanceVO vm = info.vm;
Command command = null;
if (vm != null) {
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(vm.getHypervisorType());
command = compareState(hostId, vm, info, false, hvGuru.trackVmHostChange());
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cleaning up a VM that is no longer found: " + info.name);
}
command = cleanup(info.name);
}
if (command != null) {
commands.addCommand(command);
}
}
return commands;
}
public Commands deltaSync(Map<String, Pair<String, State>> newStates) {
Map<Long, AgentVmInfo> states = convertToInfos(newStates);
Commands commands = new Commands(OnError.Continue);
for (Map.Entry<Long, AgentVmInfo> entry : states.entrySet()) {
AgentVmInfo info = entry.getValue();
VMInstanceVO vm = info.vm;
Command command = null;
if (vm != null) {
String hostGuid = info.getHostUuid();
Host host = _resourceMgr.findHostByGuid(hostGuid);
long hId = host.getId();
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(vm.getHypervisorType());
command = compareState(hId, vm, info, false, hvGuru.trackVmHostChange());
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cleaning up a VM that is no longer found: " + info.name);
}
command = cleanup(info.name);
}
if (command != null) {
commands.addCommand(command);
}
}
return commands;
}
public Commands fullSync(final long clusterId, Map<String, Pair<String, State>> newStates) {
Commands commands = new Commands(OnError.Continue);
Map<Long, AgentVmInfo> infos = convertToInfos(newStates);
long hId = 0;
final List<VMInstanceVO> vms = _vmDao.listByClusterId(clusterId);
for (VMInstanceVO vm : vms) {
AgentVmInfo info = infos.remove(vm.getId());
VMInstanceVO castedVm = null;
if (info == null) {
// the vm is not there on cluster, check the vm status in DB
if (vm.getState() == State.Starting && (DateUtil.currentGMTTime().getTime() - vm.getUpdateTime().getTime()) < 10*60*1000){
continue; // ignoring this VM as it is still settling
}
info = new AgentVmInfo(vm.getInstanceName(), getVmGuru(vm), vm, State.Stopped);
castedVm = info.guru.findById(vm.getId());
hId = vm.getHostId() == null ? vm.getLastHostId() : vm.getHostId();
} else {
castedVm = info.vm;
String hostGuid = info.getHostUuid();
Host host = _resourceMgr.findHostByGuid(hostGuid);
if (host == null) {
infos.put(vm.getId(), info);
continue;
}
hId = host.getId();
}
HypervisorGuru hvGuru = _hvGuruMgr.getGuru(castedVm.getHypervisorType());
Command command = compareState(hId, castedVm, info, true, hvGuru.trackVmHostChange());
if (command != null) {
commands.addCommand(command);
}
}
for (final AgentVmInfo left : infos.values()) {
s_logger.warn("Stopping a VM that we have no record of: " + left.name);
commands.addCommand(cleanup(left.name));
}
return commands;
}
protected Map<Long, AgentVmInfo> convertToInfos(final Map<String, Pair<String, State>> newStates) {
final HashMap<Long, AgentVmInfo> map = new HashMap<Long, AgentVmInfo>();
if (newStates == null) {
return map;
}
Collection<VirtualMachineGuru<? extends VMInstanceVO>> vmGurus = _vmGurus.values();
for (Map.Entry<String, Pair<String, State>> entry : newStates.entrySet()) {
for (VirtualMachineGuru<? extends VMInstanceVO> vmGuru : vmGurus) {
String name = entry.getKey();
VMInstanceVO vm = vmGuru.findByName(name);
if (vm != null) {
map.put(vm.getId(), new AgentVmInfo(entry.getKey(), vmGuru, vm, entry.getValue().second(), entry.getValue().first()));
break;
}
Long id = vmGuru.convertToId(name);
if (id != null) {
map.put(id, new AgentVmInfo(entry.getKey(), vmGuru, null, entry.getValue().second(), entry.getValue().first()));
break;
}
}
}
return map;
}
protected Map<Long, AgentVmInfo> convertToInfos(StartupRoutingCommand cmd) {
final Map<String, VmState> states = cmd.getVmStates();
final HashMap<Long, AgentVmInfo> map = new HashMap<Long, AgentVmInfo>();
if (states == null) {
return map;
}
Collection<VirtualMachineGuru<? extends VMInstanceVO>> vmGurus = _vmGurus.values();
for (Map.Entry<String, VmState> entry : states.entrySet()) {
for (VirtualMachineGuru<? extends VMInstanceVO> vmGuru : vmGurus) {
String name = entry.getKey();
VMInstanceVO vm = vmGuru.findByName(name);
if (vm != null) {
map.put(vm.getId(), new AgentVmInfo(entry.getKey(), vmGuru, vm, entry.getValue().getState(), entry.getValue().getHost() ));
break;
}
Long id = vmGuru.convertToId(name);
if (id != null) {
map.put(id, new AgentVmInfo(entry.getKey(), vmGuru, null,entry.getValue().getState(), entry.getValue().getHost() ));
break;
}
}
}
return map;
}
protected Map<Long, AgentVmInfo> convertDeltaToInfos(final Map<String, State> states) {
final HashMap<Long, AgentVmInfo> map = new HashMap<Long, AgentVmInfo>();
if (states == null) {
return map;
}
Collection<VirtualMachineGuru<? extends VMInstanceVO>> vmGurus = _vmGurus.values();
for (Map.Entry<String, State> entry : states.entrySet()) {
for (VirtualMachineGuru<? extends VMInstanceVO> vmGuru : vmGurus) {
String name = entry.getKey();
VMInstanceVO vm = vmGuru.findByName(name);
if (vm != null) {
map.put(vm.getId(), new AgentVmInfo(entry.getKey(), vmGuru, vm, entry.getValue()));
break;
}
Long id = vmGuru.convertToId(name);
if (id != null) {
map.put(id, new AgentVmInfo(entry.getKey(), vmGuru, null,entry.getValue()));
break;
}
}
}
return map;
}
/**
* compareState does as its name suggests and compares the states between
* management server and agent. It returns whether something should be
* cleaned up
*
*/
protected Command compareState(long hostId, VMInstanceVO vm, final AgentVmInfo info, final boolean fullSync, boolean trackExternalChange) {
State agentState = info.state;
final String agentName = info.name;
final State serverState = vm.getState();
final String serverName = vm.getInstanceName();
Command command = null;
if (s_logger.isDebugEnabled()) {
s_logger.debug("VM " + serverName + ": cs state = " + serverState + " and realState = " + agentState);
}
if (agentState == State.Error) {
agentState = State.Stopped;
short alertType = AlertManager.ALERT_TYPE_USERVM;
if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_DOMAIN_ROUTER;
} else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_CONSOLE_PROXY;
}
HostPodVO podVO = _podDao.findById(vm.getPodIdToDeployIn());
DataCenterVO dcVO = _dcDao.findById(vm.getDataCenterIdToDeployIn());
HostVO hostVO = _hostDao.findById(vm.getHostId());
String hostDesc = "name: " + hostVO.getName() + " (id:" + hostVO.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + podVO.getName();
_alertMgr.sendAlert(alertType, vm.getDataCenterIdToDeployIn(), vm.getPodIdToDeployIn(), "VM (name: " + vm.getInstanceName() + ", id: " + vm.getId() + ") stopped on host " + hostDesc
+ " due to storage failure", "Virtual Machine " + vm.getInstanceName() + " (id: " + vm.getId() + ") running on host [" + vm.getHostId() + "] stopped due to storage failure.");
}
if (trackExternalChange) {
if (serverState == State.Starting) {
if (vm.getHostId() != null && vm.getHostId() != hostId) {
s_logger.info("CloudStack is starting VM on host " + vm.getHostId() + ", but status report comes from a different host " + hostId + ", skip status sync for vm: "
+ vm.getInstanceName());
return null;
}
}
if (vm.getHostId() == null || hostId != vm.getHostId()) {
try {
stateTransitTo(vm, VirtualMachine.Event.AgentReportMigrated, hostId);
} catch (NoTransitionException e) {
}
}
}
// during VM migration time, don't sync state will agent status update
if (serverState == State.Migrating) {
s_logger.debug("Skipping vm in migrating state: " + vm);
return null;
}
if (trackExternalChange) {
if (serverState == State.Starting) {
if (vm.getHostId() != null && vm.getHostId() != hostId) {
s_logger.info("CloudStack is starting VM on host " + vm.getHostId() + ", but status report comes from a different host " + hostId + ", skip status sync for vm: "
+ vm.getInstanceName());
return null;
}
}
if (serverState == State.Running) {
try {
//
// we had a bug that sometimes VM may be at Running State
// but host_id is null, we will cover it here.
// means that when CloudStack DB lost of host information,
// we will heal it with the info reported from host
//
if (vm.getHostId() == null || hostId != vm.getHostId()) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("detected host change when VM " + vm + " is at running state, VM could be live-migrated externally from host " + vm.getHostId() + " to host " + hostId);
}
stateTransitTo(vm, VirtualMachine.Event.AgentReportMigrated, hostId);
}
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
}
}
}
if (agentState == serverState) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Both states are " + agentState + " for " + vm);
}
assert (agentState == State.Stopped || agentState == State.Running) : "If the states we send up is changed, this must be changed.";
if (agentState == State.Running) {
try {
stateTransitTo(vm, VirtualMachine.Event.AgentReportRunning, hostId);
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
}
// FIXME: What if someone comes in and sets it to stopping? Then
// what?
return null;
}
s_logger.debug("State matches but the agent said stopped so let's send a cleanup command anyways.");
return cleanup(agentName);
}
if (agentState == State.Shutdowned) {
if (serverState == State.Running || serverState == State.Starting || serverState == State.Stopping) {
try {
advanceStop(vm, true, _accountMgr.getSystemUser(), _accountMgr.getSystemAccount());
} catch (AgentUnavailableException e) {
assert (false) : "How do we hit this with forced on?";
return null;
} catch (OperationTimedoutException e) {
assert (false) : "How do we hit this with forced on?";
return null;
} catch (ConcurrentOperationException e) {
assert (false) : "How do we hit this with forced on?";
return null;
}
} else {
s_logger.debug("Sending cleanup to a shutdowned vm: " + agentName);
command = cleanup(agentName);
}
} else if (agentState == State.Stopped) {
// This state means the VM on the agent was detected previously
// and now is gone. This is slightly different than if the VM
// was never completed but we still send down a Stop Command
// to ensure there's cleanup.
if (serverState == State.Running) {
// Our records showed that it should be running so let's restart
// it.
_haMgr.scheduleRestart(vm, false);
} else if (serverState == State.Stopping) {
_haMgr.scheduleStop(vm, hostId, WorkType.ForceStop);
s_logger.debug("Scheduling a check stop for VM in stopping mode: " + vm);
} else if (serverState == State.Starting) {
s_logger.debug("Ignoring VM in starting mode: " + vm.getInstanceName());
_haMgr.scheduleRestart(vm, false);
}
command = cleanup(agentName);
} else if (agentState == State.Running) {
if (serverState == State.Starting) {
if (fullSync) {
try {
ensureVmRunningContext(hostId, vm, Event.AgentReportRunning);
} catch (OperationTimedoutException e) {
s_logger.error("Exception during update for running vm: " + vm, e);
return null;
} catch (ResourceUnavailableException e) {
s_logger.error("Exception during update for running vm: " + vm, e);
return null;
} catch (NoTransitionException e) {
s_logger.warn(e.getMessage());
}
}
} else if (serverState == State.Stopping) {
s_logger.debug("Scheduling a stop command for " + vm);
_haMgr.scheduleStop(vm, hostId, WorkType.Stop);
} else {
s_logger.debug("server VM state " + serverState + " does not meet expectation of a running VM report from agent");
// just be careful not to stop VM for things we don't handle
// command = cleanup(agentName);
}
}
return command;
}
private void ensureVmRunningContext(long hostId, VMInstanceVO vm, Event cause) throws OperationTimedoutException, ResourceUnavailableException, NoTransitionException {
VirtualMachineGuru<VMInstanceVO> vmGuru = getVmGuru(vm);
s_logger.debug("VM state is starting on full sync so updating it to running");
vm = findByIdAndType(vm.getType(), vm.getId());
// grab outstanding work item if any
ItWorkVO work = _workDao.findByOutstandingWork(vm.getId(), vm.getState());
if (work != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Found an outstanding work item for this vm " + vm + " in state:" + vm.getState() + ", work id:" + work.getId());
}
}
try {
stateTransitTo(vm, cause, hostId);
} catch (NoTransitionException e1) {
s_logger.warn(e1.getMessage());
}
s_logger.debug("VM's " + vm + " state is starting on full sync so updating it to Running");
vm = vmGuru.findById(vm.getId()); // this should ensure vm has the most
// up to date info
VirtualMachineProfile<VMInstanceVO> profile = new VirtualMachineProfileImpl<VMInstanceVO>(vm);
List<NicVO> nics = _nicsDao.listByVmId(profile.getId());
for (NicVO nic : nics) {
Network network = _networkMgr.getNetwork(nic.getNetworkId());
NicProfile nicProfile = new NicProfile(nic, network, nic.getBroadcastUri(), nic.getIsolationUri(), null, _networkMgr.isSecurityGroupSupportedInNetwork(network), _networkMgr.getNetworkTags(profile.getHypervisorType(), network));
profile.addNic(nicProfile);
}
Commands cmds = new Commands(OnError.Stop);
s_logger.debug("Finalizing commands that need to be send to complete Start process for the vm " + vm);
if (vmGuru.finalizeCommandsOnStart(cmds, profile)) {
if (cmds.size() != 0) {
_agentMgr.send(vm.getHostId(), cmds);
}
if (vmGuru.finalizeStart(profile, vm.getHostId(), cmds, null)) {
stateTransitTo(vm, cause, vm.getHostId());
} else {
s_logger.error("Unable to finish finialization for running vm: " + vm);
}
} else {
s_logger.error("Unable to finalize commands on start for vm: " + vm);
}
if (work != null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Updating outstanding work item to Done, id:" + work.getId());
}
work.setStep(Step.Done);
_workDao.update(work.getId(), work);
}
}
@Override
public boolean isRecurring() {
return false;
}
@Override
public boolean processAnswers(long agentId, long seq, Answer[] answers) {
for (final Answer answer : answers) {
if (answer instanceof ClusterSyncAnswer) {
ClusterSyncAnswer hs = (ClusterSyncAnswer) answer;
if (hs.execute()){
if (hs.isFull()) {
fullSync(hs.getClusterId(), hs.getNewStates());
} else if (hs.isDelta()){
deltaSync(hs.getNewStates());
}
}
hs.setExecuted();
} else if (!answer.getResult()) {
s_logger.warn("Cleanup failed due to " + answer.getDetails());
} else {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cleanup succeeded. Details " + answer.getDetails());
}
}
}
return true;
}
@Override
public boolean processTimeout(long agentId, long seq) {
return true;
}
@Override
public int getTimeout() {
return -1;
}
@Override
public boolean processCommands(long agentId, long seq, Command[] cmds) {
boolean processed = false;
for (Command cmd : cmds) {
if (cmd instanceof PingRoutingCommand) {
PingRoutingCommand ping = (PingRoutingCommand) cmd;
if (ping.getNewStates() != null && ping.getNewStates().size() > 0) {
Commands commands = deltaHostSync(agentId, ping.getNewStates());
if (commands.size() > 0) {
try {
_agentMgr.send(agentId, commands, this);
} catch (final AgentUnavailableException e) {
s_logger.warn("Agent is now unavailable", e);
}
}
}
processed = true;
}
}
return processed;
}
@Override
public AgentControlAnswer processControlCommand(long agentId, AgentControlCommand cmd) {
return null;
}
@Override
public boolean processDisconnect(long agentId, Status state) {
return true;
}
@Override
public void processConnect(HostVO agent, StartupCommand cmd, boolean forRebalance) throws ConnectionException {
if (!(cmd instanceof StartupRoutingCommand)) {
return;
}
if (forRebalance) {
s_logger.debug("Not processing listener " + this + " as connect happens on rebalance process");
return;
}
if (forRebalance) {
s_logger.debug("Not processing listener " + this + " as connect happens on rebalance process");
return;
}
Long clusterId = agent.getClusterId();
long agentId = agent.getId();
if (agent.getHypervisorType() == HypervisorType.XenServer) { // only fro Xen
ClusterSyncCommand syncCmd = new ClusterSyncCommand(Integer.parseInt(Config.ClusterDeltaSyncInterval.getDefaultValue()),
Integer.parseInt(Config.ClusterFullSyncSkipSteps.getDefaultValue()), clusterId);
try {
long seq_no = _agentMgr.send(agentId, new Commands(syncCmd), this);
s_logger.debug("Cluster VM sync started with jobid " + seq_no);
} catch (AgentUnavailableException e) {
s_logger.fatal("The Cluster VM sync process failed for cluster id " + clusterId + " with ", e);
}
}
else { // for others KVM and VMWare
StartupRoutingCommand startup = (StartupRoutingCommand) cmd;
Commands commands = fullHostSync(agentId, startup);
if (commands.size() > 0) {
s_logger.debug("Sending clean commands to the agent");
try {
boolean error = false;
Answer[] answers = _agentMgr.send(agentId, commands);
for (Answer answer : answers) {
if (!answer.getResult()) {
s_logger.warn("Unable to stop a VM due to " + answer.getDetails());
error = true;
}
}
if (error) {
throw new ConnectionException(true, "Unable to stop VMs");
}
} catch (final AgentUnavailableException e) {
s_logger.warn("Agent is unavailable now", e);
throw new ConnectionException(true, "Unable to sync", e);
} catch (final OperationTimedoutException e) {
s_logger.warn("Agent is unavailable now", e);
throw new ConnectionException(true, "Unable to sync", e);
}
}
}
}
protected class TransitionTask implements Runnable {
@Override
public void run() {
GlobalLock lock = GlobalLock.getInternLock("TransitionChecking");
if (lock == null) {
s_logger.debug("Couldn't get the global lock");
return;
}
if (!lock.lock(30)) {
s_logger.debug("Couldn't lock the db");
return;
}
try {
lock.addRef();
List<VMInstanceVO> instances = _vmDao.findVMInTransition(new Date(new Date().getTime() - (_operationTimeout * 1000)), State.Starting, State.Stopping);
for (VMInstanceVO instance : instances) {
State state = instance.getState();
if (state == State.Stopping) {
_haMgr.scheduleStop(instance, instance.getHostId(), WorkType.CheckStop);
} else if (state == State.Starting) {
_haMgr.scheduleRestart(instance, true);
}
}
} catch (Exception e) {
s_logger.warn("Caught the following exception on transition checking", e);
} finally {
StackMaid.current().exitCleanup();
lock.unlock();
}
}
}
protected class AgentVmInfo {
public String name;
public State state;
public String hostUuid;
public VMInstanceVO vm;
public VirtualMachineGuru<VMInstanceVO> guru;
@SuppressWarnings("unchecked")
public AgentVmInfo(String name, VirtualMachineGuru<? extends VMInstanceVO> guru, VMInstanceVO vm, State state, String host) {
this.name = name;
this.state = state;
this.vm = vm;
this.guru = (VirtualMachineGuru<VMInstanceVO>) guru;
this.hostUuid = host;
}
public AgentVmInfo(String name, VirtualMachineGuru<? extends VMInstanceVO> guru, VMInstanceVO vm, State state) {
this(name, guru, vm, state, null);
}
public String getHostUuid() {
return hostUuid;
}
}
@Override
public VMInstanceVO findById(long vmId) {
return _vmDao.findById(vmId);
}
}
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