Examples with ResourceUnavailableException com.cloud.exception.ResourceUnavailableException used on opensource projects

Example 11 with ResourceUnavailableException

use of com.cloud.exception.ResourceUnavailableException in project cloudstack by apache.

the class NuageVspElement method implement.

@Override
public boolean implement(Network network, NetworkOffering offering, DeployDestination dest, ReservationContext context) throws ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
    if (s_logger.isDebugEnabled()) {
        s_logger.debug("Entering NuageElement implement function for network " + network.getDisplayText() + " (state " + network.getState() + ")");
    }
    if (network.getVpcId() != null) {
        return applyACLRulesForVpc(network, offering);
    }
    if (!canHandle(network, offering, Service.Connectivity)) {
        return false;
    }
    if (network.getBroadcastUri() == null) {
        s_logger.error("Nic has no broadcast Uri with the virtual router IP");
        return false;
    }
    VspNetwork vspNetwork = _nuageVspEntityBuilder.buildVspNetwork(network);
    List<VspAclRule> ingressFirewallRules = getFirewallRulesToApply(network, FirewallRule.TrafficType.Ingress);
    List<VspAclRule> egressFirewallRules = getFirewallRulesToApply(network, FirewallRule.TrafficType.Egress);
    List<IPAddressVO> ips = _ipAddressDao.listStaticNatPublicIps(network.getId());
    List<String> floatingIpUuids = new ArrayList<String>();
    for (IPAddressVO ip : ips) {
        floatingIpUuids.add(ip.getUuid());
    }
    VspDhcpDomainOption vspDhcpOptions = _nuageVspEntityBuilder.buildNetworkDhcpOption(network, offering);
    HostVO nuageVspHost = _nuageVspManager.getNuageVspHost(network.getPhysicalNetworkId());
    ImplementVspCommand cmd = new ImplementVspCommand(vspNetwork, ingressFirewallRules, egressFirewallRules, floatingIpUuids, vspDhcpOptions);
    Answer answer = _agentMgr.easySend(nuageVspHost.getId(), cmd);
    if (answer == null || !answer.getResult()) {
        s_logger.error("ImplementVspCommand for network " + network.getUuid() + " failed on Nuage VSD " + nuageVspHost.getDetail("hostname"));
        if ((null != answer) && (null != answer.getDetails())) {
            throw new ResourceUnavailableException(answer.getDetails(), Network.class, network.getId());
        }
    }
    return true;
}

Example 12 with ResourceUnavailableException

use of com.cloud.exception.ResourceUnavailableException in project cloudstack by apache.

the class UserVmManagerImpl method createVirtualMachine.

@DB
protected UserVm createVirtualMachine(DataCenter zone, ServiceOffering serviceOffering, VirtualMachineTemplate tmplt, String hostName, String displayName, Account owner, Long diskOfferingId, Long diskSize, List<NetworkVO> networkList, List<Long> securityGroupIdList, String group, HTTPMethod httpmethod, String userData, String sshKeyPair, HypervisorType hypervisor, Account caller, Map<Long, IpAddresses> requestedIps, IpAddresses defaultIps, Boolean isDisplayVm, String keyboard, List<Long> affinityGroupIdList, Map<String, String> customParameters, String customId) throws InsufficientCapacityException, ResourceUnavailableException, ConcurrentOperationException, StorageUnavailableException, ResourceAllocationException {
    _accountMgr.checkAccess(caller, null, true, owner);
    if (owner.getState() == Account.State.disabled) {
        throw new PermissionDeniedException("The owner of vm to deploy is disabled: " + owner);
    }
    VMTemplateVO template = _templateDao.findById(tmplt.getId());
    if (template != null) {
        _templateDao.loadDetails(template);
    }
    long accountId = owner.getId();
    assert !(requestedIps != null && (defaultIps.getIp4Address() != null || defaultIps.getIp6Address() != null)) : "requestedIp list and defaultNetworkIp should never be specified together";
    if (Grouping.AllocationState.Disabled == zone.getAllocationState() && !_accountMgr.isRootAdmin(caller.getId())) {
        throw new PermissionDeniedException("Cannot perform this operation, Zone is currently disabled: " + zone.getId());
    }
    // check if zone is dedicated
    DedicatedResourceVO dedicatedZone = _dedicatedDao.findByZoneId(zone.getId());
    if (dedicatedZone != null) {
        DomainVO domain = _domainDao.findById(dedicatedZone.getDomainId());
        if (domain == null) {
            throw new CloudRuntimeException("Unable to find the domain " + zone.getDomainId() + " for the zone: " + zone);
        }
        // check that caller can operate with domain
        _configMgr.checkZoneAccess(caller, zone);
        // check that vm owner can create vm in the domain
        _configMgr.checkZoneAccess(owner, zone);
    }
    ServiceOfferingVO offering = _serviceOfferingDao.findById(serviceOffering.getId());
    if (offering.isDynamic()) {
        offering.setDynamicFlag(true);
        validateCustomParameters(offering, customParameters);
        offering = _offeringDao.getcomputeOffering(offering, customParameters);
    }
    // check if account/domain is with in resource limits to create a new vm
    boolean isIso = Storage.ImageFormat.ISO == template.getFormat();
    // For baremetal, size can be null
    Long tmp = _templateDao.findById(template.getId()).getSize();
    long size = 0;
    if (tmp != null) {
        size = tmp;
    }
    if (diskOfferingId != null) {
        DiskOfferingVO diskOffering = _diskOfferingDao.findById(diskOfferingId);
        if (diskOffering != null && diskOffering.isCustomized()) {
            if (diskSize == null) {
                throw new InvalidParameterValueException("This disk offering requires a custom size specified");
            }
            Long customDiskOfferingMaxSize = VolumeOrchestrationService.CustomDiskOfferingMaxSize.value();
            Long customDiskOfferingMinSize = VolumeOrchestrationService.CustomDiskOfferingMinSize.value();
            if ((diskSize < customDiskOfferingMinSize) || (diskSize > customDiskOfferingMaxSize)) {
                throw new InvalidParameterValueException("VM Creation failed. Volume size: " + diskSize + "GB is out of allowed range. Max: " + customDiskOfferingMaxSize + " Min:" + customDiskOfferingMinSize);
            }
            size = size + diskSize * (1024 * 1024 * 1024);
        }
        size += _diskOfferingDao.findById(diskOfferingId).getDiskSize();
    }
    resourceLimitCheck(owner, isDisplayVm, new Long(offering.getCpu()), new Long(offering.getRamSize()));
    _resourceLimitMgr.checkResourceLimit(owner, ResourceType.volume, (isIso || diskOfferingId == null ? 1 : 2));
    _resourceLimitMgr.checkResourceLimit(owner, ResourceType.primary_storage, size);
    // verify security group ids
    if (securityGroupIdList != null) {
        for (Long securityGroupId : securityGroupIdList) {
            SecurityGroup sg = _securityGroupDao.findById(securityGroupId);
            if (sg == null) {
                throw new InvalidParameterValueException("Unable to find security group by id " + securityGroupId);
            } else {
                // verify permissions
                _accountMgr.checkAccess(caller, null, true, owner, sg);
            }
        }
    }
    // check that the affinity groups exist
    if (affinityGroupIdList != null) {
        for (Long affinityGroupId : affinityGroupIdList) {
            AffinityGroupVO ag = _affinityGroupDao.findById(affinityGroupId);
            if (ag == null) {
                throw new InvalidParameterValueException("Unable to find affinity group " + ag);
            } else if (!_affinityGroupService.isAffinityGroupProcessorAvailable(ag.getType())) {
                throw new InvalidParameterValueException("Affinity group type is not supported for group: " + ag + " ,type: " + ag.getType() + " , Please try again after removing the affinity group");
            } else {
                // verify permissions
                if (ag.getAclType() == ACLType.Domain) {
                    _accountMgr.checkAccess(caller, null, false, owner, ag);
                    // make sure the owner of these entities is same
                    if (caller.getId() == Account.ACCOUNT_ID_SYSTEM || _accountMgr.isRootAdmin(caller.getId())) {
                        if (!_affinityGroupService.isAffinityGroupAvailableInDomain(ag.getId(), owner.getDomainId())) {
                            throw new PermissionDeniedException("Affinity Group " + ag + " does not belong to the VM's domain");
                        }
                    }
                } else {
                    _accountMgr.checkAccess(caller, null, true, owner, ag);
                    // make sure the owner of these entities is same
                    if (caller.getId() == Account.ACCOUNT_ID_SYSTEM || _accountMgr.isRootAdmin(caller.getId())) {
                        if (ag.getAccountId() != owner.getAccountId()) {
                            throw new PermissionDeniedException("Affinity Group " + ag + " does not belong to the VM's account");
                        }
                    }
                }
            }
        }
    }
    HypervisorType hypervisorType = null;
    if (template.getHypervisorType() == null || template.getHypervisorType() == HypervisorType.None) {
        if (hypervisor == null || hypervisor == HypervisorType.None) {
            throw new InvalidParameterValueException("hypervisor parameter is needed to deploy VM or the hypervisor parameter value passed is invalid");
        }
        hypervisorType = hypervisor;
    } else {
        if (hypervisor != null && hypervisor != HypervisorType.None && hypervisor != template.getHypervisorType()) {
            throw new InvalidParameterValueException("Hypervisor passed to the deployVm call, is different from the hypervisor type of the template");
        }
        hypervisorType = template.getHypervisorType();
    }
    if (hypervisorType != HypervisorType.BareMetal) {
        // check if we have available pools for vm deployment
        long availablePools = _storagePoolDao.countPoolsByStatus(StoragePoolStatus.Up);
        if (availablePools < 1) {
            throw new StorageUnavailableException("There are no available pools in the UP state for vm deployment", -1);
        }
    }
    if (template.getTemplateType().equals(TemplateType.SYSTEM)) {
        throw new InvalidParameterValueException("Unable to use system template " + template.getId() + " to deploy a user vm");
    }
    List<VMTemplateZoneVO> listZoneTemplate = _templateZoneDao.listByZoneTemplate(zone.getId(), template.getId());
    if (listZoneTemplate == null || listZoneTemplate.isEmpty()) {
        throw new InvalidParameterValueException("The template " + template.getId() + " is not available for use");
    }
    if (isIso && !template.isBootable()) {
        throw new InvalidParameterValueException("Installing from ISO requires an ISO that is bootable: " + template.getId());
    }
    // Check templates permissions
    _accountMgr.checkAccess(owner, AccessType.UseEntry, false, template);
    // check if the user data is correct
    validateUserData(userData, httpmethod);
    // Find an SSH public key corresponding to the key pair name, if one is
    // given
    String sshPublicKey = null;
    if (sshKeyPair != null && !sshKeyPair.equals("")) {
        SSHKeyPair pair = _sshKeyPairDao.findByName(owner.getAccountId(), owner.getDomainId(), sshKeyPair);
        if (pair == null) {
            throw new InvalidParameterValueException("A key pair with name '" + sshKeyPair + "' was not found.");
        }
        sshPublicKey = pair.getPublicKey();
    }
    List<Pair<NetworkVO, NicProfile>> networks = new ArrayList<Pair<NetworkVO, NicProfile>>();
    LinkedHashMap<String, NicProfile> networkNicMap = new LinkedHashMap<String, NicProfile>();
    short defaultNetworkNumber = 0;
    boolean securityGroupEnabled = false;
    boolean vpcNetwork = false;
    for (NetworkVO network : networkList) {
        if ((network.getDataCenterId() != zone.getId())) {
            if (!network.isStrechedL2Network()) {
                throw new InvalidParameterValueException("Network id=" + network.getId() + " doesn't belong to zone " + zone.getId());
            }
            NetworkOffering ntwkOffering = _networkOfferingDao.findById(network.getNetworkOfferingId());
            Long physicalNetworkId = _networkModel.findPhysicalNetworkId(zone.getId(), ntwkOffering.getTags(), ntwkOffering.getTrafficType());
            if (physicalNetworkId == null) {
                throw new InvalidParameterValueException("Network in which is VM getting deployed could not be" + " streched to the zone, as we could not find a valid physical network");
            }
            String provider = _ntwkSrvcDao.getProviderForServiceInNetwork(network.getId(), Service.Connectivity);
            if (!_networkModel.isProviderEnabledInPhysicalNetwork(physicalNetworkId, provider)) {
                throw new InvalidParameterValueException("Network in which is VM getting deployed could not be" + " streched to the zone, as we could not find a valid physical network");
            }
        }
        //relax the check if the caller is admin account
        if (caller.getType() != Account.ACCOUNT_TYPE_ADMIN) {
            if (!(network.getGuestType() == Network.GuestType.Shared && network.getAclType() == ACLType.Domain) && !(network.getAclType() == ACLType.Account && network.getAccountId() == accountId)) {
                throw new InvalidParameterValueException("only shared network or isolated network with the same account_id can be added to vm");
            }
        }
        IpAddresses requestedIpPair = null;
        if (requestedIps != null && !requestedIps.isEmpty()) {
            requestedIpPair = requestedIps.get(network.getId());
        }
        if (requestedIpPair == null) {
            requestedIpPair = new IpAddresses(null, null);
        } else {
            _networkModel.checkRequestedIpAddresses(network.getId(), requestedIpPair.getIp4Address(), requestedIpPair.getIp6Address());
        }
        NicProfile profile = new NicProfile(requestedIpPair.getIp4Address(), requestedIpPair.getIp6Address());
        if (defaultNetworkNumber == 0) {
            defaultNetworkNumber++;
            // if user requested specific ip for default network, add it
            if (defaultIps.getIp4Address() != null || defaultIps.getIp6Address() != null) {
                _networkModel.checkRequestedIpAddresses(network.getId(), defaultIps.getIp4Address(), defaultIps.getIp6Address());
                profile = new NicProfile(defaultIps.getIp4Address(), defaultIps.getIp6Address());
            }
            profile.setDefaultNic(true);
            if (!_networkModel.areServicesSupportedInNetwork(network.getId(), new Service[] { Service.UserData })) {
                if ((userData != null) && (!userData.isEmpty())) {
                    throw new InvalidParameterValueException("Unable to deploy VM as UserData is provided while deploying the VM, but there is no support for " + Network.Service.UserData.getName() + " service in the default network " + network.getId());
                }
                if ((sshPublicKey != null) && (!sshPublicKey.isEmpty())) {
                    throw new InvalidParameterValueException("Unable to deploy VM as SSH keypair is provided while deploying the VM, but there is no support for " + Network.Service.UserData.getName() + " service in the default network " + network.getId());
                }
                if (template.getEnablePassword()) {
                    throw new InvalidParameterValueException("Unable to deploy VM as template " + template.getId() + " is password enabled, but there is no support for " + Network.Service.UserData.getName() + " service in the default network " + network.getId());
                }
            }
        }
        networks.add(new Pair<NetworkVO, NicProfile>(network, profile));
        if (_networkModel.isSecurityGroupSupportedInNetwork(network)) {
            securityGroupEnabled = true;
        }
        // vm can't be a part of more than 1 VPC network
        if (network.getVpcId() != null) {
            if (vpcNetwork) {
                throw new InvalidParameterValueException("Vm can't be a part of more than 1 VPC network");
            }
            vpcNetwork = true;
        }
        networkNicMap.put(network.getUuid(), profile);
    }
    if (securityGroupIdList != null && !securityGroupIdList.isEmpty() && !securityGroupEnabled) {
        throw new InvalidParameterValueException("Unable to deploy vm with security groups as SecurityGroup service is not enabled for the vm's network");
    }
    // gateway for the vm
    if (defaultNetworkNumber == 0) {
        throw new InvalidParameterValueException("At least 1 default network has to be specified for the vm");
    } else if (defaultNetworkNumber > 1) {
        throw new InvalidParameterValueException("Only 1 default network per vm is supported");
    }
    long id = _vmDao.getNextInSequence(Long.class, "id");
    if (hostName != null) {
        // Check is hostName is RFC compliant
        checkNameForRFCCompliance(hostName);
    }
    String instanceName = null;
    String uuidName = _uuidMgr.generateUuid(UserVm.class, customId);
    if (_instanceNameFlag && hypervisor.equals(HypervisorType.VMware)) {
        if (hostName == null) {
            if (displayName != null) {
                hostName = displayName;
            } else {
                hostName = generateHostName(uuidName);
            }
        }
        // If global config vm.instancename.flag is set to true, then CS will set guest VM's name as it appears on the hypervisor, to its hostname.
        // In case of VMware since VM name must be unique within a DC, check if VM with the same hostname already exists in the zone.
        VMInstanceVO vmByHostName = _vmInstanceDao.findVMByHostNameInZone(hostName, zone.getId());
        if (vmByHostName != null && vmByHostName.getState() != VirtualMachine.State.Expunging) {
            throw new InvalidParameterValueException("There already exists a VM by the name: " + hostName + ".");
        }
    } else {
        if (hostName == null) {
            //Generate name using uuid and instance.name global config
            hostName = generateHostName(uuidName);
        }
    }
    if (hostName != null) {
        // Check is hostName is RFC compliant
        checkNameForRFCCompliance(hostName);
    }
    instanceName = VirtualMachineName.getVmName(id, owner.getId(), _instance);
    // Check if VM with instanceName already exists.
    VMInstanceVO vmObj = _vmInstanceDao.findVMByInstanceName(instanceName);
    if (vmObj != null && vmObj.getState() != VirtualMachine.State.Expunging) {
        throw new InvalidParameterValueException("There already exists a VM by the display name supplied");
    }
    checkIfHostNameUniqueInNtwkDomain(hostName, networkList);
    long userId = CallContext.current().getCallingUserId();
    if (CallContext.current().getCallingAccount().getId() != owner.getId()) {
        List<UserVO> userVOs = _userDao.listByAccount(owner.getAccountId());
        if (!userVOs.isEmpty()) {
            userId = userVOs.get(0).getId();
        }
    }
    UserVmVO vm = commitUserVm(zone, template, hostName, displayName, owner, diskOfferingId, diskSize, userData, caller, isDisplayVm, keyboard, accountId, userId, offering, isIso, sshPublicKey, networkNicMap, id, instanceName, uuidName, hypervisorType, customParameters);
    // Assign instance to the group
    try {
        if (group != null) {
            boolean addToGroup = addInstanceToGroup(Long.valueOf(id), group);
            if (!addToGroup) {
                throw new CloudRuntimeException("Unable to assign Vm to the group " + group);
            }
        }
    } catch (Exception ex) {
        throw new CloudRuntimeException("Unable to assign Vm to the group " + group);
    }
    _securityGroupMgr.addInstanceToGroups(vm.getId(), securityGroupIdList);
    if (affinityGroupIdList != null && !affinityGroupIdList.isEmpty()) {
        _affinityGroupVMMapDao.updateMap(vm.getId(), affinityGroupIdList);
    }
    CallContext.current().putContextParameter(VirtualMachine.class, vm.getUuid());
    return vm;
}

Example 13 with ResourceUnavailableException

use of com.cloud.exception.ResourceUnavailableException in project cloudstack by apache.

the class UserVmManagerImpl method rebootVirtualMachine.

private UserVm rebootVirtualMachine(long userId, long vmId) throws InsufficientCapacityException, ResourceUnavailableException {
    UserVmVO vm = _vmDao.findById(vmId);
    if (vm == null || vm.getState() == State.Destroyed || vm.getState() == State.Expunging || vm.getRemoved() != null) {
        s_logger.warn("Vm id=" + vmId + " doesn't exist");
        return null;
    }
    if (vm.getState() == State.Running && vm.getHostId() != null) {
        collectVmDiskStatistics(vm);
        DataCenterVO dc = _dcDao.findById(vm.getDataCenterId());
        try {
            if (dc.getNetworkType() == DataCenter.NetworkType.Advanced) {
                //List all networks of vm
                List<Long> vmNetworks = _vmNetworkMapDao.getNetworks(vmId);
                List<DomainRouterVO> routers = new ArrayList<DomainRouterVO>();
                //List the stopped routers
                for (long vmNetworkId : vmNetworks) {
                    List<DomainRouterVO> router = _routerDao.listStopped(vmNetworkId);
                    routers.addAll(router);
                }
                //and routers are started serially ,may revisit to make this process parallel
                for (DomainRouterVO routerToStart : routers) {
                    s_logger.warn("Trying to start router " + routerToStart.getInstanceName() + " as part of vm: " + vm.getInstanceName() + " reboot");
                    _virtualNetAppliance.startRouter(routerToStart.getId(), true);
                }
            }
        } catch (ConcurrentOperationException e) {
            throw new CloudRuntimeException("Concurrent operations on starting router. " + e);
        } catch (Exception ex) {
            throw new CloudRuntimeException("Router start failed due to" + ex);
        } finally {
            s_logger.info("Rebooting vm " + vm.getInstanceName());
            _itMgr.reboot(vm.getUuid(), null);
        }
        return _vmDao.findById(vmId);
    } else {
        s_logger.error("Vm id=" + vmId + " is not in Running state, failed to reboot");
        return null;
    }
}

Example 14 with ResourceUnavailableException

use of com.cloud.exception.ResourceUnavailableException in project cloudstack by apache.

the class SecondaryStorageManagerImpl method stopSecStorageVm.

@Override
public boolean stopSecStorageVm(long secStorageVmId) {
    SecondaryStorageVmVO secStorageVm = _secStorageVmDao.findById(secStorageVmId);
    if (secStorageVm == null) {
        String msg = "Stopping secondary storage vm failed: secondary storage vm " + secStorageVmId + " no longer exists";
        if (s_logger.isDebugEnabled()) {
            s_logger.debug(msg);
        }
        return false;
    }
    try {
        if (secStorageVm.getHostId() != null) {
            GlobalLock secStorageVmLock = GlobalLock.getInternLock(getSecStorageVmLockName(secStorageVm.getId()));
            try {
                if (secStorageVmLock.lock(ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_SYNC)) {
                    try {
                        _itMgr.stop(secStorageVm.getUuid());
                        return true;
                    } finally {
                        secStorageVmLock.unlock();
                    }
                } else {
                    String msg = "Unable to acquire secondary storage vm lock : " + secStorageVm.toString();
                    s_logger.debug(msg);
                    return false;
                }
            } finally {
                secStorageVmLock.releaseRef();
            }
        }
        // vm was already stopped, return true
        return true;
    } catch (ResourceUnavailableException e) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Stopping secondary storage vm " + secStorageVm.getHostName() + " faled : exception " + e.toString());
        }
        return false;
    }
}

Example 15 with ResourceUnavailableException

use of com.cloud.exception.ResourceUnavailableException in project cloudstack by apache.

the class UserVmManagerImpl method restoreVMInternal.

public UserVm restoreVMInternal(Account caller, UserVmVO vm, Long newTemplateId) throws InsufficientCapacityException, ResourceUnavailableException {
    Long userId = caller.getId();
    Account owner = _accountDao.findById(vm.getAccountId());
    _userDao.findById(userId);
    long vmId = vm.getId();
    boolean needRestart = false;
    // Input validation
    if (owner == null) {
        throw new InvalidParameterValueException("The owner of " + vm + " does not exist: " + vm.getAccountId());
    }
    if (owner.getState() == Account.State.disabled) {
        throw new PermissionDeniedException("The owner of " + vm + " is disabled: " + vm.getAccountId());
    }
    if (vm.getState() != VirtualMachine.State.Running && vm.getState() != VirtualMachine.State.Stopped) {
        throw new CloudRuntimeException("Vm " + vm.getUuid() + " currently in " + vm.getState() + " state, restore vm can only execute when VM in Running or Stopped");
    }
    if (vm.getState() == VirtualMachine.State.Running) {
        needRestart = true;
    }
    List<VolumeVO> rootVols = _volsDao.findByInstanceAndType(vmId, Volume.Type.ROOT);
    if (rootVols.isEmpty()) {
        InvalidParameterValueException ex = new InvalidParameterValueException("Can not find root volume for VM " + vm.getUuid());
        ex.addProxyObject(vm.getUuid(), "vmId");
        throw ex;
    }
    if (rootVols.size() > 1) {
        InvalidParameterValueException ex = new InvalidParameterValueException("There are " + rootVols.size() + " root volumes for VM " + vm.getUuid());
        ex.addProxyObject(vm.getUuid(), "vmId");
        throw ex;
    }
    VolumeVO root = rootVols.get(0);
    if (!Volume.State.Allocated.equals(root.getState()) || newTemplateId != null) {
        Long templateId = root.getTemplateId();
        boolean isISO = false;
        if (templateId == null) {
            // Assuming that for a vm deployed using ISO, template ID is set to NULL
            isISO = true;
            templateId = vm.getIsoId();
        }
        // If target VM has associated VM snapshots then don't allow restore of VM
        List<VMSnapshotVO> vmSnapshots = _vmSnapshotDao.findByVm(vmId);
        if (vmSnapshots.size() > 0) {
            throw new InvalidParameterValueException("Unable to restore VM, please remove VM snapshots before restoring VM");
        }
        VMTemplateVO template = null;
        //newTemplateId can be either template or ISO id. In the following snippet based on the vm deployment (from template or ISO) it is handled accordingly
        if (newTemplateId != null) {
            template = _templateDao.findById(newTemplateId);
            _accountMgr.checkAccess(caller, null, true, template);
            if (isISO) {
                if (!template.getFormat().equals(ImageFormat.ISO)) {
                    throw new InvalidParameterValueException("Invalid ISO id provided to restore the VM ");
                }
            } else {
                if (template.getFormat().equals(ImageFormat.ISO)) {
                    throw new InvalidParameterValueException("Invalid template id provided to restore the VM ");
                }
            }
        } else {
            if (isISO && templateId == null) {
                throw new CloudRuntimeException("Cannot restore the VM since there is no ISO attached to VM");
            }
            template = _templateDao.findById(templateId);
            if (template == null) {
                InvalidParameterValueException ex = new InvalidParameterValueException("Cannot find template/ISO for specified volumeid and vmId");
                ex.addProxyObject(vm.getUuid(), "vmId");
                ex.addProxyObject(root.getUuid(), "volumeId");
                throw ex;
            }
        }
        TemplateDataStoreVO tmplStore = _templateStoreDao.findByTemplateZoneReady(template.getId(), vm.getDataCenterId());
        if (tmplStore == null) {
            throw new InvalidParameterValueException("Cannot restore the vm as the template " + template.getUuid() + " isn't available in the zone");
        }
        if (needRestart) {
            try {
                _itMgr.stop(vm.getUuid());
            } catch (ResourceUnavailableException e) {
                s_logger.debug("Stop vm " + vm.getUuid() + " failed", e);
                CloudRuntimeException ex = new CloudRuntimeException("Stop vm failed for specified vmId");
                ex.addProxyObject(vm.getUuid(), "vmId");
                throw ex;
            }
        }
        /* If new template/ISO is provided allocate a new volume from new template/ISO otherwise allocate new volume from original template/ISO */
        Volume newVol = null;
        if (newTemplateId != null) {
            if (isISO) {
                newVol = volumeMgr.allocateDuplicateVolume(root, null);
                vm.setIsoId(newTemplateId);
                vm.setGuestOSId(template.getGuestOSId());
                vm.setTemplateId(newTemplateId);
                _vmDao.update(vmId, vm);
            } else {
                newVol = volumeMgr.allocateDuplicateVolume(root, newTemplateId);
                vm.setGuestOSId(template.getGuestOSId());
                vm.setTemplateId(newTemplateId);
                _vmDao.update(vmId, vm);
            }
        } else {
            newVol = volumeMgr.allocateDuplicateVolume(root, null);
        }
        // 1. Save usage event and update resource count for user vm volumes
        _resourceLimitMgr.incrementResourceCount(newVol.getAccountId(), ResourceType.volume, newVol.isDisplay());
        _resourceLimitMgr.incrementResourceCount(newVol.getAccountId(), ResourceType.primary_storage, newVol.isDisplay(), new Long(newVol.getSize()));
        // 2. Create Usage event for the newly created volume
        UsageEventVO usageEvent = new UsageEventVO(EventTypes.EVENT_VOLUME_CREATE, newVol.getAccountId(), newVol.getDataCenterId(), newVol.getId(), newVol.getName(), newVol.getDiskOfferingId(), template.getId(), newVol.getSize());
        _usageEventDao.persist(usageEvent);
        handleManagedStorage(vm, root);
        _volsDao.attachVolume(newVol.getId(), vmId, newVol.getDeviceId());
        // Detach, destroy and create the usage event for the old root volume.
        _volsDao.detachVolume(root.getId());
        volumeMgr.destroyVolume(root);
        // For VMware hypervisor since the old root volume is replaced by the new root volume, force expunge old root volume if it has been created in storage
        if (vm.getHypervisorType() == HypervisorType.VMware) {
            VolumeInfo volumeInStorage = volFactory.getVolume(root.getId());
            if (volumeInStorage != null) {
                s_logger.info("Expunging volume " + root.getId() + " from primary data store");
                AsyncCallFuture<VolumeApiResult> future = _volService.expungeVolumeAsync(volFactory.getVolume(root.getId()));
                try {
                    future.get();
                } catch (Exception e) {
                    s_logger.debug("Failed to expunge volume:" + root.getId(), e);
                }
            }
        }
        Map<VirtualMachineProfile.Param, Object> params = null;
        String password = null;
        if (template.getEnablePassword()) {
            password = _mgr.generateRandomPassword();
            boolean result = resetVMPasswordInternal(vmId, password);
            if (result) {
                vm.setPassword(password);
                _vmDao.loadDetails(vm);
                // update the password in vm_details table too
                // Check if an SSH key pair was selected for the instance and if so
                // use it to encrypt & save the vm password
                encryptAndStorePassword(vm, password);
            } else {
                throw new CloudRuntimeException("VM reset is completed but failed to reset password for the virtual machine ");
            }
        }
        if (needRestart) {
            try {
                if (vm.getDetail("password") != null) {
                    params = new HashMap<VirtualMachineProfile.Param, Object>();
                    params.put(VirtualMachineProfile.Param.VmPassword, password);
                }
                _itMgr.start(vm.getUuid(), params);
                vm = _vmDao.findById(vmId);
                if (template.getEnablePassword()) {
                    // this value is not being sent to the backend; need only for api
                    // display purposes
                    vm.setPassword(password);
                    if (vm.isUpdateParameters()) {
                        vm.setUpdateParameters(false);
                        _vmDao.loadDetails(vm);
                        if (vm.getDetail("password") != null) {
                            _vmDetailsDao.remove(_vmDetailsDao.findDetail(vm.getId(), "password").getId());
                        }
                        _vmDao.update(vm.getId(), vm);
                    }
                }
            } catch (Exception e) {
                s_logger.debug("Unable to start VM " + vm.getUuid(), e);
                CloudRuntimeException ex = new CloudRuntimeException("Unable to start VM with specified id" + e.getMessage());
                ex.addProxyObject(vm.getUuid(), "vmId");
                throw ex;
            }
        }
    }
    s_logger.debug("Restore VM " + vmId + " done successfully");
    return vm;
}