Examples with DiskOfferingVO com.cloud.storage.DiskOfferingVO used on opensource projects

Example 1 with DiskOfferingVO

use of com.cloud.storage.DiskOfferingVO in project cloudstack by apache.

the class StorageSystemDataMotionStrategy method handleCreateVolumeFromSnapshotOnSecondaryStorage.

/**
     * Creates a volume on the storage from a snapshot that resides on the secondary storage (archived snapshot).
     * @param snapshotInfo snapshot on secondary
     * @param volumeInfo volume to be created on the storage
     * @param callback  for async
     */
private void handleCreateVolumeFromSnapshotOnSecondaryStorage(SnapshotInfo snapshotInfo, VolumeInfo volumeInfo, AsyncCompletionCallback<CopyCommandResult> callback) {
    // at this point, the snapshotInfo and volumeInfo should have the same disk offering ID (so either one should be OK to get a DiskOfferingVO instance)
    DiskOfferingVO diskOffering = _diskOfferingDao.findByIdIncludingRemoved(volumeInfo.getDiskOfferingId());
    SnapshotVO snapshot = _snapshotDao.findById(snapshotInfo.getId());
    // update the volume's hv_ss_reserve (hypervisor snapshot reserve) from a disk offering (used for managed storage)
    _volumeService.updateHypervisorSnapshotReserveForVolume(diskOffering, volumeInfo.getId(), snapshot.getHypervisorType());
    CopyCmdAnswer copyCmdAnswer = null;
    String errMsg = null;
    HostVO hostVO = null;
    try {
        // create a volume on the storage
        AsyncCallFuture<VolumeApiResult> future = _volumeService.createVolumeAsync(volumeInfo, volumeInfo.getDataStore());
        VolumeApiResult result = future.get();
        if (result.isFailed()) {
            LOGGER.error("Failed to create a volume: " + result.getResult());
            throw new CloudRuntimeException(result.getResult());
        }
        volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(), volumeInfo.getDataStore());
        volumeInfo.processEvent(Event.MigrationRequested);
        volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(), volumeInfo.getDataStore());
        hostVO = getHost(snapshotInfo.getDataCenterId(), false);
        // copy the volume from secondary via the hypervisor
        copyCmdAnswer = performCopyOfVdi(volumeInfo, snapshotInfo, hostVO);
        if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
            if (copyCmdAnswer != null && !StringUtils.isEmpty(copyCmdAnswer.getDetails())) {
                errMsg = copyCmdAnswer.getDetails();
            } else {
                errMsg = "Unable to create volume from snapshot";
            }
        }
    } catch (Exception ex) {
        errMsg = ex.getMessage() != null ? ex.getMessage() : "Copy operation failed in 'StorageSystemDataMotionStrategy.handleCreateVolumeFromSnapshotBothOnStorageSystem'";
    }
    CopyCommandResult result = new CopyCommandResult(null, copyCmdAnswer);
    result.setResult(errMsg);
    callback.complete(result);
}

Example 2 with DiskOfferingVO

use of com.cloud.storage.DiskOfferingVO 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 3 with DiskOfferingVO

use of com.cloud.storage.DiskOfferingVO in project cloudstack by apache.

the class ConfigurationServerImpl method createdefaultDiskOffering.

private DiskOfferingVO createdefaultDiskOffering(Long domainId, String name, String description, ProvisioningType provisioningType, int numGibibytes, String tags, boolean isCustomized, boolean isSystemUse) {
    long diskSize = numGibibytes;
    diskSize = diskSize * 1024 * 1024 * 1024;
    tags = cleanupTags(tags);
    DiskOfferingVO newDiskOffering = new DiskOfferingVO(domainId, name, description, provisioningType, diskSize, tags, isCustomized, null, null, null);
    newDiskOffering.setUniqueName("Cloud.Com-" + name);
    // leaving the above reference to cloud.com in as it is an identifyer and has no real world relevance
    newDiskOffering.setSystemUse(isSystemUse);
    newDiskOffering = _diskOfferingDao.persistDeafultDiskOffering(newDiskOffering);
    return newDiskOffering;
}

Example 4 with DiskOfferingVO

use of com.cloud.storage.DiskOfferingVO in project cloudstack by apache.

the class CloudOrchestrator method createVirtualMachineFromScratch.

@Override
public VirtualMachineEntity createVirtualMachineFromScratch(String id, String owner, String isoId, String hostName, String displayName, String hypervisor, String os, int cpu, int speed, long memory, Long diskSize, List<String> computeTags, List<String> rootDiskTags, Map<String, NicProfile> networkNicMap, DeploymentPlan plan) throws InsufficientCapacityException {
    // VirtualMachineEntityImpl vmEntity = new VirtualMachineEntityImpl(id, owner, hostName, displayName, cpu, speed, memory, computeTags, rootDiskTags, networks, vmEntityManager);
    VirtualMachineEntityImpl vmEntity = ComponentContext.inject(VirtualMachineEntityImpl.class);
    vmEntity.init(id, owner, hostName, displayName, cpu, speed, memory, computeTags, rootDiskTags, new ArrayList<String>(networkNicMap.keySet()));
    //load vm instance and offerings and call virtualMachineManagerImpl
    VMInstanceVO vm = _vmDao.findByUuid(id);
    ServiceOfferingVO computeOffering = _serviceOfferingDao.findById(vm.getId(), vm.getServiceOfferingId());
    DiskOfferingInfo rootDiskOfferingInfo = new DiskOfferingInfo();
    rootDiskOfferingInfo.setDiskOffering(computeOffering);
    Long diskOfferingId = vm.getDiskOfferingId();
    if (diskOfferingId == null) {
        throw new InvalidParameterValueException("Installing from ISO requires a disk offering to be specified for the root disk.");
    }
    DiskOfferingVO diskOffering = _diskOfferingDao.findById(diskOfferingId);
    if (diskOffering == null) {
        throw new InvalidParameterValueException("Unable to find disk offering " + diskOfferingId);
    }
    Long size = null;
    if (diskOffering.getDiskSize() == 0) {
        size = diskSize;
        if (size == null) {
            throw new InvalidParameterValueException("Disk offering " + diskOffering + " requires size parameter.");
        }
        _volumeMgr.validateVolumeSizeRange(size * 1024 * 1024 * 1024);
    }
    rootDiskOfferingInfo.setDiskOffering(diskOffering);
    rootDiskOfferingInfo.setSize(size);
    if (diskOffering.isCustomizedIops() != null && diskOffering.isCustomizedIops()) {
        Map<String, String> userVmDetails = _userVmDetailsDao.listDetailsKeyPairs(vm.getId());
        if (userVmDetails != null) {
            String minIops = userVmDetails.get("minIopsDo");
            String maxIops = userVmDetails.get("maxIopsDo");
            rootDiskOfferingInfo.setMinIops(minIops != null && minIops.trim().length() > 0 ? Long.parseLong(minIops) : null);
            rootDiskOfferingInfo.setMaxIops(maxIops != null && maxIops.trim().length() > 0 ? Long.parseLong(maxIops) : null);
        }
    }
    LinkedHashMap<Network, List<? extends NicProfile>> networkIpMap = new LinkedHashMap<Network, List<? extends NicProfile>>();
    for (String uuid : networkNicMap.keySet()) {
        NetworkVO network = _networkDao.findByUuid(uuid);
        if (network != null) {
            networkIpMap.put(network, new ArrayList<NicProfile>(Arrays.asList(networkNicMap.get(uuid))));
        }
    }
    HypervisorType hypervisorType = HypervisorType.valueOf(hypervisor);
    _itMgr.allocate(vm.getInstanceName(), _templateDao.findById(new Long(isoId)), computeOffering, rootDiskOfferingInfo, new ArrayList<DiskOfferingInfo>(), networkIpMap, plan, hypervisorType);
    return vmEntity;
}

Example 5 with DiskOfferingVO

use of com.cloud.storage.DiskOfferingVO in project cloudstack by apache.

the class VirtualMachineManagerImpl method getPoolListForVolumesForMigration.

private Map<Volume, StoragePool> getPoolListForVolumesForMigration(final VirtualMachineProfile profile, final Host host, final Map<Long, Long> volumeToPool) {
    final List<VolumeVO> allVolumes = _volsDao.findUsableVolumesForInstance(profile.getId());
    final Map<Volume, StoragePool> volumeToPoolObjectMap = new HashMap<>();
    for (final VolumeVO volume : allVolumes) {
        final Long poolId = volumeToPool.get(Long.valueOf(volume.getId()));
        final StoragePoolVO destPool = _storagePoolDao.findById(poolId);
        final StoragePoolVO currentPool = _storagePoolDao.findById(volume.getPoolId());
        final DiskOfferingVO diskOffering = _diskOfferingDao.findById(volume.getDiskOfferingId());
        if (destPool != null) {
            // created is compliant with the pool type.
            if (_poolHostDao.findByPoolHost(destPool.getId(), host.getId()) == null || destPool.isLocal() != diskOffering.getUseLocalStorage()) {
                // Cannot find a pool for the volume. Throw an exception.
                throw new CloudRuntimeException("Cannot migrate volume " + volume + " to storage pool " + destPool + " while migrating vm to host " + host + ". Either the pool is not accessible from the host or because of the offering with which the volume is created it cannot be placed on " + "the given pool.");
            } else if (destPool.getId() == currentPool.getId()) {
            // If the pool to migrate to is the same as current pool, the volume doesn't need to be migrated.
            } else {
                volumeToPoolObjectMap.put(volume, destPool);
            }
        } else {
            if (currentPool.isManaged()) {
                volumeToPoolObjectMap.put(volume, currentPool);
            } else {
                // Find a suitable pool for the volume. Call the storage pool allocator to find the list of pools.
                final DiskProfile diskProfile = new DiskProfile(volume, diskOffering, profile.getHypervisorType());
                final DataCenterDeployment plan = new DataCenterDeployment(host.getDataCenterId(), host.getPodId(), host.getClusterId(), host.getId(), null, null);
                final List<StoragePool> poolList = new ArrayList<>();
                final ExcludeList avoid = new ExcludeList();
                for (final StoragePoolAllocator allocator : _storagePoolAllocators) {
                    final List<StoragePool> poolListFromAllocator = allocator.allocateToPool(diskProfile, profile, plan, avoid, StoragePoolAllocator.RETURN_UPTO_ALL);
                    if (poolListFromAllocator != null && !poolListFromAllocator.isEmpty()) {
                        poolList.addAll(poolListFromAllocator);
                    }
                }
                boolean currentPoolAvailable = false;
                if (poolList != null && !poolList.isEmpty()) {
                    // Volume needs to be migrated. Pick the first pool from the list. Add a mapping to migrate the
                    // volume to a pool only if it is required; that is the current pool on which the volume resides
                    // is not available on the destination host.
                    final Iterator<StoragePool> iter = poolList.iterator();
                    while (iter.hasNext()) {
                        if (currentPool.getId() == iter.next().getId()) {
                            currentPoolAvailable = true;
                            break;
                        }
                    }
                    if (!currentPoolAvailable) {
                        volumeToPoolObjectMap.put(volume, _storagePoolDao.findByUuid(poolList.get(0).getUuid()));
                    }
                }
                if (!currentPoolAvailable && !volumeToPoolObjectMap.containsKey(volume)) {
                    // Cannot find a pool for the volume. Throw an exception.
                    throw new CloudRuntimeException("Cannot find a storage pool which is available for volume " + volume + " while migrating virtual machine " + profile.getVirtualMachine() + " to host " + host);
                }
            }
        }
    }
    return volumeToPoolObjectMap;
}