Examples with Task com.xensource.xenapi.Task used on opensource projects

Example 16 with Task

use of com.xensource.xenapi.Task in project cloudstack by apache.

the class Xenserver625StorageProcessor method createTemplateFromSnapshot.

@Override
public Answer createTemplateFromSnapshot(final CopyCommand cmd) {
    final Connection conn = hypervisorResource.getConnection();
    final DataTO srcData = cmd.getSrcTO();
    final DataTO destData = cmd.getDestTO();
    if (srcData.getDataStore() instanceof PrimaryDataStoreTO && destData.getDataStore() instanceof NfsTO) {
        return createTemplateFromSnapshot2(cmd);
    }
    final int wait = cmd.getWait();
    final SnapshotObjectTO srcObj = (SnapshotObjectTO) srcData;
    final TemplateObjectTO destObj = (TemplateObjectTO) destData;
    final NfsTO srcStore = (NfsTO) srcObj.getDataStore();
    final NfsTO destStore = (NfsTO) destObj.getDataStore();
    URI srcUri = null;
    URI destUri = null;
    try {
        srcUri = new URI(srcStore.getUrl());
        destUri = new URI(destStore.getUrl());
    } catch (final Exception e) {
        s_logger.debug("incorrect url", e);
        return new CopyCmdAnswer("incorrect url" + e.toString());
    }
    final String srcPath = srcObj.getPath();
    final int index = srcPath.lastIndexOf("/");
    final String srcDir = srcPath.substring(0, index);
    final String destDir = destObj.getPath();
    SR srcSr = null;
    SR destSr = null;
    VDI destVdi = null;
    boolean result = false;
    try {
        srcSr = createFileSr(conn, srcUri.getHost() + ":" + srcUri.getPath(), srcDir);
        final String destNfsPath = destUri.getHost() + ":" + destUri.getPath();
        final String localDir = "/var/cloud_mount/" + UUID.nameUUIDFromBytes(destNfsPath.getBytes());
        mountNfs(conn, destUri.getHost() + ":" + destUri.getPath(), localDir);
        makeDirectory(conn, localDir + "/" + destDir);
        destSr = createFileSR(conn, localDir + "/" + destDir);
        final String nameLabel = "cloud-" + UUID.randomUUID().toString();
        final String[] parents = srcObj.getParents();
        final List<VDI> snapshotChains = new ArrayList<VDI>();
        if (parents != null) {
            for (int i = 0; i < parents.length; i++) {
                final String snChainPath = parents[i];
                final String uuid = getSnapshotUuid(snChainPath);
                final VDI chain = VDI.getByUuid(conn, uuid);
                snapshotChains.add(chain);
            }
        }
        final String snapshotUuid = getSnapshotUuid(srcPath);
        final VDI snapshotVdi = VDI.getByUuid(conn, snapshotUuid);
        snapshotChains.add(snapshotVdi);
        final long templateVirtualSize = snapshotChains.get(0).getVirtualSize(conn);
        destVdi = createVdi(conn, nameLabel, destSr, templateVirtualSize);
        final String destVdiUuid = destVdi.getUuid(conn);
        for (final VDI snapChain : snapshotChains) {
            final Task task = snapChain.copyAsync(conn, null, null, destVdi);
            // poll every 1 seconds ,
            hypervisorResource.waitForTask(conn, task, 1000, wait * 1000);
            hypervisorResource.checkForSuccess(conn, task);
            task.destroy(conn);
        }
        destVdi = VDI.getByUuid(conn, destVdiUuid);
        // scan makes XenServer pick up VDI physicalSize
        destSr.scan(conn);
        final String templateUuid = destVdi.getUuid(conn);
        final String templateFilename = templateUuid + ".vhd";
        final long virtualSize = destVdi.getVirtualSize(conn);
        final long physicalSize = destVdi.getPhysicalUtilisation(conn);
        String templatePath = destNfsPath + "/" + destDir;
        templatePath = templatePath.replaceAll("//", "/");
        result = hypervisorResource.postCreatePrivateTemplate(conn, templatePath, templateFilename, templateUuid, nameLabel, null, physicalSize, virtualSize, destObj.getId());
        if (!result) {
            throw new CloudRuntimeException("Could not create the template.properties file on secondary storage dir");
        }
        final TemplateObjectTO newTemplate = new TemplateObjectTO();
        newTemplate.setPath(destDir + "/" + templateFilename);
        newTemplate.setFormat(Storage.ImageFormat.VHD);
        newTemplate.setSize(destVdi.getVirtualSize(conn));
        newTemplate.setPhysicalSize(destVdi.getPhysicalUtilisation(conn));
        newTemplate.setName(destVdiUuid);
        result = true;
        return new CopyCmdAnswer(newTemplate);
    } catch (final Exception e) {
        s_logger.error("Failed create template from snapshot", e);
        return new CopyCmdAnswer("Failed create template from snapshot " + e.toString());
    } finally {
        if (!result) {
            if (destVdi != null) {
                try {
                    destVdi.destroy(conn);
                } catch (final Exception e) {
                    s_logger.debug("Clean up left over on dest storage failed: ", e);
                }
            }
        }
        if (srcSr != null) {
            hypervisorResource.removeSR(conn, srcSr);
        }
        if (destSr != null) {
            hypervisorResource.removeSR(conn, destSr);
        }
    }
}

Example 17 with Task

use of com.xensource.xenapi.Task in project cloudstack by apache.

the class XenServer610MigrateWithStorageCommandWrapper method execute.

@Override
public Answer execute(final MigrateWithStorageCommand command, final XenServer610Resource xenServer610Resource) {
    final Connection connection = xenServer610Resource.getConnection();
    final VirtualMachineTO vmSpec = command.getVirtualMachine();
    final List<Pair<VolumeTO, StorageFilerTO>> volumeToFiler = command.getVolumeToFilerAsList();
    final String vmName = vmSpec.getName();
    Task task = null;
    final XsHost xsHost = xenServer610Resource.getHost();
    final String uuid = xsHost.getUuid();
    try {
        xenServer610Resource.prepareISO(connection, vmName, null, null);
        // Get the list of networks and recreate VLAN, if required.
        for (final NicTO nicTo : vmSpec.getNics()) {
            xenServer610Resource.getNetwork(connection, nicTo);
        }
        final Map<String, String> other = new HashMap<String, String>();
        other.put("live", "true");
        final XsLocalNetwork nativeNetworkForTraffic = xenServer610Resource.getNativeNetworkForTraffic(connection, TrafficType.Storage, null);
        final Network networkForSm = nativeNetworkForTraffic.getNetwork();
        // Create the vif map. The  vm stays in the same cluster so we have to pass an empty vif map.
        final Map<VIF, Network> vifMap = new HashMap<VIF, Network>();
        final Map<VDI, SR> vdiMap = new HashMap<VDI, SR>();
        for (final Pair<VolumeTO, StorageFilerTO> entry : volumeToFiler) {
            final StorageFilerTO storageFiler = entry.second();
            final VolumeTO volume = entry.first();
            vdiMap.put(xenServer610Resource.getVDIbyUuid(connection, volume.getPath()), xenServer610Resource.getStorageRepository(connection, storageFiler.getUuid()));
        }
        // Get the vm to migrate.
        final Set<VM> vms = VM.getByNameLabel(connection, vmSpec.getName());
        final VM vmToMigrate = vms.iterator().next();
        // Check migration with storage is possible.
        final Host host = Host.getByUuid(connection, uuid);
        final Map<String, String> token = host.migrateReceive(connection, networkForSm, other);
        task = vmToMigrate.assertCanMigrateAsync(connection, token, true, vdiMap, vifMap, other);
        try {
            // poll every 1 seconds
            final long timeout = xenServer610Resource.getMigrateWait() * 1000L;
            xenServer610Resource.waitForTask(connection, task, 1000, timeout);
            xenServer610Resource.checkForSuccess(connection, task);
        } catch (final Types.HandleInvalid e) {
            s_logger.error("Error while checking if vm " + vmName + " can be migrated to the destination host " + host, e);
            throw new CloudRuntimeException("Error while checking if vm " + vmName + " can be migrated to the " + "destination host " + host, e);
        }
        // Migrate now.
        task = vmToMigrate.migrateSendAsync(connection, token, true, vdiMap, vifMap, other);
        try {
            // poll every 1 seconds.
            final long timeout = xenServer610Resource.getMigrateWait() * 1000L;
            xenServer610Resource.waitForTask(connection, task, 1000, timeout);
            xenServer610Resource.checkForSuccess(connection, task);
        } catch (final Types.HandleInvalid e) {
            s_logger.error("Error while migrating vm " + vmName + " to the destination host " + host, e);
            throw new CloudRuntimeException("Error while migrating vm " + vmName + " to the destination host " + host, e);
        }
        // Volume paths would have changed. Return that information.
        final List<VolumeObjectTO> volumeToList = xenServer610Resource.getUpdatedVolumePathsOfMigratedVm(connection, vmToMigrate, vmSpec.getDisks());
        vmToMigrate.setAffinity(connection, host);
        return new MigrateWithStorageAnswer(command, volumeToList);
    } catch (final Exception e) {
        s_logger.warn("Catch Exception " + e.getClass().getName() + ". Storage motion failed due to " + e.toString(), e);
        return new MigrateWithStorageAnswer(command, e);
    } finally {
        if (task != null) {
            try {
                task.destroy(connection);
            } catch (final Exception e) {
                s_logger.debug("Unable to destroy task " + task.toString() + " on host " + uuid + " due to " + e.toString());
            }
        }
    }
}

Example 18 with Task

use of com.xensource.xenapi.Task in project cloudstack by apache.

the class CitrixCreateVMSnapshotCommandWrapper method execute.

@Override
public Answer execute(final CreateVMSnapshotCommand command, final CitrixResourceBase citrixResourceBase) {
    final String vmName = command.getVmName();
    final String vmSnapshotName = command.getTarget().getSnapshotName();
    final List<VolumeObjectTO> listVolumeTo = command.getVolumeTOs();
    VmPowerState vmState = VmPowerState.HALTED;
    final String guestOSType = command.getGuestOSType();
    final String platformEmulator = command.getPlatformEmulator();
    final boolean snapshotMemory = command.getTarget().getType() == VMSnapshot.Type.DiskAndMemory;
    final long timeout = command.getWait();
    final Connection conn = citrixResourceBase.getConnection();
    VM vm = null;
    VM vmSnapshot = null;
    boolean success = false;
    try {
        // check if VM snapshot already exists
        final Set<VM> vmSnapshots = VM.getByNameLabel(conn, command.getTarget().getSnapshotName());
        if (vmSnapshots == null || vmSnapshots.size() > 0) {
            return new CreateVMSnapshotAnswer(command, command.getTarget(), command.getVolumeTOs());
        }
        // check if there is already a task for this VM snapshot
        Task task = null;
        Set<Task> tasks = Task.getByNameLabel(conn, "Async.VM.snapshot");
        if (tasks == null) {
            tasks = new LinkedHashSet<>();
        }
        final Set<Task> tasksByName = Task.getByNameLabel(conn, "Async.VM.checkpoint");
        if (tasksByName != null) {
            tasks.addAll(tasksByName);
        }
        for (final Task taskItem : tasks) {
            if (taskItem.getOtherConfig(conn).containsKey("CS_VM_SNAPSHOT_KEY")) {
                final String vmSnapshotTaskName = taskItem.getOtherConfig(conn).get("CS_VM_SNAPSHOT_KEY");
                if (vmSnapshotTaskName != null && vmSnapshotTaskName.equals(command.getTarget().getSnapshotName())) {
                    task = taskItem;
                }
            }
        }
        // create a new task if there is no existing task for this VM snapshot
        if (task == null) {
            try {
                vm = citrixResourceBase.getVM(conn, vmName);
                vmState = vm.getPowerState(conn);
            } catch (final Exception e) {
                if (!snapshotMemory) {
                    vm = citrixResourceBase.createWorkingVM(conn, vmName, guestOSType, platformEmulator, listVolumeTo);
                }
            }
            if (vm == null) {
                return new CreateVMSnapshotAnswer(command, false, "Creating VM Snapshot Failed due to can not find vm: " + vmName);
            }
            // call Xenserver API
            if (!snapshotMemory) {
                task = vm.snapshotAsync(conn, vmSnapshotName);
            } else {
                final Set<VBD> vbds = vm.getVBDs(conn);
                final Pool pool = Pool.getByUuid(conn, citrixResourceBase.getHost().getPool());
                for (final VBD vbd : vbds) {
                    final VBD.Record vbdr = vbd.getRecord(conn);
                    if (vbdr.userdevice.equals("0")) {
                        final VDI vdi = vbdr.VDI;
                        final SR sr = vdi.getSR(conn);
                        // store memory image on the same SR with ROOT volume
                        pool.setSuspendImageSR(conn, sr);
                    }
                }
                task = vm.checkpointAsync(conn, vmSnapshotName);
            }
            task.addToOtherConfig(conn, "CS_VM_SNAPSHOT_KEY", vmSnapshotName);
        }
        citrixResourceBase.waitForTask(conn, task, 1000, timeout * 1000);
        citrixResourceBase.checkForSuccess(conn, task);
        final String result = task.getResult(conn);
        // extract VM snapshot ref from result
        final String ref = result.substring("<value>".length(), result.length() - "</value>".length());
        vmSnapshot = Types.toVM(ref);
        try {
            Thread.sleep(5000);
        } catch (final InterruptedException ex) {
        }
        // calculate used capacity for this VM snapshot
        for (final VolumeObjectTO volumeTo : command.getVolumeTOs()) {
            final long size = citrixResourceBase.getVMSnapshotChainSize(conn, volumeTo, command.getVmName());
            volumeTo.setSize(size);
        }
        success = true;
        return new CreateVMSnapshotAnswer(command, command.getTarget(), command.getVolumeTOs());
    } catch (final Exception e) {
        String msg = "";
        if (e instanceof Types.BadAsyncResult) {
            final String licenseKeyWord = "LICENCE_RESTRICTION";
            final Types.BadAsyncResult errorResult = (Types.BadAsyncResult) e;
            if (errorResult.shortDescription != null && errorResult.shortDescription.contains(licenseKeyWord)) {
                msg = licenseKeyWord;
            }
        } else {
            msg = e.toString();
        }
        s_logger.warn("Creating VM Snapshot " + command.getTarget().getSnapshotName() + " failed due to: " + msg, e);
        return new CreateVMSnapshotAnswer(command, false, msg);
    } finally {
        try {
            if (!success) {
                if (vmSnapshot != null) {
                    s_logger.debug("Delete exsisting VM Snapshot " + vmSnapshotName + " after making VolumeTO failed");
                    final Set<VBD> vbds = vmSnapshot.getVBDs(conn);
                    for (final VBD vbd : vbds) {
                        final VBD.Record vbdr = vbd.getRecord(conn);
                        if (vbdr.type == Types.VbdType.DISK) {
                            final VDI vdi = vbdr.VDI;
                            vdi.destroy(conn);
                        }
                    }
                    vmSnapshot.destroy(conn);
                }
            }
            if (vmState == VmPowerState.HALTED) {
                if (vm != null) {
                    vm.destroy(conn);
                }
            }
        } catch (final Exception e2) {
            s_logger.error("delete snapshot error due to " + e2.getMessage());
        }
    }
}

Example 19 with Task

use of com.xensource.xenapi.Task in project cloudstack by apache.

the class Xenserver625StorageProcessor method backupSnapshot.

@Override
public Answer backupSnapshot(final CopyCommand cmd) {
    final Connection conn = hypervisorResource.getConnection();
    final DataTO srcData = cmd.getSrcTO();
    final DataTO cacheData = cmd.getCacheTO();
    final DataTO destData = cmd.getDestTO();
    final int wait = cmd.getWait();
    final PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) srcData.getDataStore();
    final String primaryStorageNameLabel = primaryStore.getUuid();
    String secondaryStorageUrl = null;
    NfsTO cacheStore = null;
    String destPath = null;
    if (cacheData != null) {
        cacheStore = (NfsTO) cacheData.getDataStore();
        secondaryStorageUrl = cacheStore.getUrl();
        destPath = cacheData.getPath();
    } else {
        cacheStore = (NfsTO) destData.getDataStore();
        secondaryStorageUrl = cacheStore.getUrl();
        destPath = destData.getPath();
    }
    final SnapshotObjectTO snapshotTO = (SnapshotObjectTO) srcData;
    final SnapshotObjectTO snapshotOnImage = (SnapshotObjectTO) destData;
    String snapshotUuid = snapshotTO.getPath();
    final String prevBackupUuid = snapshotOnImage.getParentSnapshotPath();
    final String prevSnapshotUuid = snapshotTO.getParentSnapshotPath();
    final Map<String, String> options = cmd.getOptions();
    // By default assume failure
    String details = null;
    String snapshotBackupUuid = null;
    boolean fullbackup = Boolean.parseBoolean(options.get("fullSnapshot"));
    Long physicalSize = null;
    try {
        SR primaryStorageSR = null;
        if (primaryStore.isManaged()) {
            // currently, managed storage only supports full backup
            fullbackup = true;
            final Map<String, String> srcDetails = cmd.getOptions();
            final String iScsiName = srcDetails.get(DiskTO.IQN);
            final String storageHost = srcDetails.get(DiskTO.STORAGE_HOST);
            final String chapInitiatorUsername = srcDetails.get(DiskTO.CHAP_INITIATOR_USERNAME);
            final String chapInitiatorSecret = srcDetails.get(DiskTO.CHAP_INITIATOR_SECRET);
            final String srType = CitrixResourceBase.SRType.LVMOISCSI.toString();
            primaryStorageSR = hypervisorResource.getIscsiSR(conn, iScsiName, storageHost, iScsiName, chapInitiatorUsername, chapInitiatorSecret, false, srType, true);
            final VDI srcVdi = primaryStorageSR.getVDIs(conn).iterator().next();
            if (srcVdi == null) {
                throw new InternalErrorException("Could not Find a VDI on the SR: " + primaryStorageSR.getNameLabel(conn));
            }
            snapshotUuid = srcVdi.getUuid(conn);
        } else {
            primaryStorageSR = hypervisorResource.getSRByNameLabelandHost(conn, primaryStorageNameLabel);
        }
        if (primaryStorageSR == null) {
            throw new InternalErrorException("Could not backup snapshot because the primary Storage SR could not be created from the name label: " + primaryStorageNameLabel);
        }
        // String psUuid = primaryStorageSR.getUuid(conn);
        final Boolean isISCSI = IsISCSI(primaryStorageSR.getType(conn));
        final VDI snapshotVdi = getVDIbyUuid(conn, snapshotUuid);
        final String snapshotPaUuid = snapshotVdi.getUuid(conn);
        final URI uri = new URI(secondaryStorageUrl);
        final String secondaryStorageMountPath = uri.getHost() + ":" + uri.getPath();
        final DataStoreTO destStore = destData.getDataStore();
        final String folder = destPath;
        String finalPath = null;
        final String localMountPoint = BaseMountPointOnHost + File.separator + UUID.nameUUIDFromBytes(secondaryStorageUrl.getBytes()).toString();
        if (fullbackup) {
            SR snapshotSr = null;
            Task task = null;
            try {
                final String localDir = "/var/cloud_mount/" + UUID.nameUUIDFromBytes(secondaryStorageMountPath.getBytes());
                mountNfs(conn, secondaryStorageMountPath, localDir);
                final boolean result = makeDirectory(conn, localDir + "/" + folder);
                if (!result) {
                    details = " Filed to create folder " + folder + " in secondary storage";
                    s_logger.warn(details);
                    return new CopyCmdAnswer(details);
                }
                snapshotSr = createFileSr(conn, secondaryStorageMountPath, folder);
                task = snapshotVdi.copyAsync(conn, snapshotSr, null, null);
                // poll every 1 seconds ,
                hypervisorResource.waitForTask(conn, task, 1000, wait * 1000);
                hypervisorResource.checkForSuccess(conn, task);
                final VDI backedVdi = Types.toVDI(task, conn);
                snapshotBackupUuid = backedVdi.getUuid(conn);
                physicalSize = backedVdi.getPhysicalUtilisation(conn);
                if (destStore instanceof SwiftTO) {
                    try {
                        final String container = "S-" + snapshotTO.getVolume().getVolumeId().toString();
                        final String destSnapshotName = swiftBackupSnapshot(conn, (SwiftTO) destStore, snapshotSr.getUuid(conn), snapshotBackupUuid, container, false, wait);
                        final String swiftPath = container + File.separator + destSnapshotName;
                        finalPath = swiftPath;
                    } finally {
                        try {
                            deleteSnapshotBackup(conn, localMountPoint, folder, secondaryStorageMountPath, snapshotBackupUuid);
                        } catch (final Exception e) {
                            s_logger.debug("Failed to delete snapshot on cache storages", e);
                        }
                    }
                } else if (destStore instanceof S3TO) {
                    try {
                        finalPath = backupSnapshotToS3(conn, (S3TO) destStore, snapshotSr.getUuid(conn), folder, snapshotBackupUuid, isISCSI, wait);
                        if (finalPath == null) {
                            throw new CloudRuntimeException("S3 upload of snapshots " + snapshotBackupUuid + " failed");
                        }
                    } finally {
                        try {
                            deleteSnapshotBackup(conn, localMountPoint, folder, secondaryStorageMountPath, snapshotBackupUuid);
                        } catch (final Exception e) {
                            s_logger.debug("Failed to delete snapshot on cache storages", e);
                        }
                    }
                // finalPath = folder + File.separator +
                // snapshotBackupUuid;
                } else {
                    finalPath = folder + File.separator + snapshotBackupUuid + ".vhd";
                }
            } finally {
                if (task != null) {
                    try {
                        task.destroy(conn);
                    } catch (final Exception e) {
                        s_logger.warn("unable to destroy task(" + task.toWireString() + ") due to " + e.toString());
                    }
                }
                if (snapshotSr != null) {
                    hypervisorResource.removeSR(conn, snapshotSr);
                }
                if (primaryStore.isManaged()) {
                    hypervisorResource.removeSR(conn, primaryStorageSR);
                }
            }
        } else {
            final String primaryStorageSRUuid = primaryStorageSR.getUuid(conn);
            if (destStore instanceof SwiftTO) {
                final String container = "S-" + snapshotTO.getVolume().getVolumeId().toString();
                snapshotBackupUuid = swiftBackupSnapshot(conn, (SwiftTO) destStore, primaryStorageSRUuid, snapshotPaUuid, "S-" + snapshotTO.getVolume().getVolumeId().toString(), isISCSI, wait);
                finalPath = container + File.separator + snapshotBackupUuid;
            } else if (destStore instanceof S3TO) {
                finalPath = backupSnapshotToS3(conn, (S3TO) destStore, primaryStorageSRUuid, folder, snapshotPaUuid, isISCSI, wait);
                if (finalPath == null) {
                    throw new CloudRuntimeException("S3 upload of snapshots " + snapshotPaUuid + " failed");
                }
            } else {
                final String result = backupSnapshot(conn, primaryStorageSRUuid, localMountPoint, folder, secondaryStorageMountPath, snapshotUuid, prevBackupUuid, prevSnapshotUuid, isISCSI, wait);
                final String[] tmp = result.split("#");
                snapshotBackupUuid = tmp[0];
                physicalSize = Long.parseLong(tmp[1]);
                finalPath = folder + File.separator + snapshotBackupUuid + ".vhd";
            }
            final String volumeUuid = snapshotTO.getVolume().getPath();
            destroySnapshotOnPrimaryStorageExceptThis(conn, volumeUuid, snapshotUuid);
        }
        final SnapshotObjectTO newSnapshot = new SnapshotObjectTO();
        newSnapshot.setPath(finalPath);
        newSnapshot.setPhysicalSize(physicalSize);
        if (fullbackup) {
            newSnapshot.setParentSnapshotPath(null);
        } else {
            newSnapshot.setParentSnapshotPath(prevBackupUuid);
        }
        return new CopyCmdAnswer(newSnapshot);
    } catch (final Types.XenAPIException e) {
        details = "BackupSnapshot Failed due to " + e.toString();
        s_logger.warn(details, e);
    } catch (final Exception e) {
        details = "BackupSnapshot Failed due to " + e.getMessage();
        s_logger.warn(details, e);
    }
    return new CopyCmdAnswer(details);
}

Example 20 with Task

use of com.xensource.xenapi.Task in project cloudstack by apache.

the class Xenserver625StorageProcessor method copyVolumeFromImageCacheToPrimary.

@Override
public Answer copyVolumeFromImageCacheToPrimary(final CopyCommand cmd) {
    final Connection conn = hypervisorResource.getConnection();
    final DataTO srcData = cmd.getSrcTO();
    final DataTO destData = cmd.getDestTO();
    final int wait = cmd.getWait();
    final VolumeObjectTO srcVolume = (VolumeObjectTO) srcData;
    final VolumeObjectTO destVolume = (VolumeObjectTO) destData;
    final PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) destVolume.getDataStore();
    final DataStoreTO srcStore = srcVolume.getDataStore();
    if (srcStore instanceof NfsTO) {
        final NfsTO nfsStore = (NfsTO) srcStore;
        final String volumePath = srcVolume.getPath();
        int index = volumePath.lastIndexOf("/");
        final String volumeDirectory = volumePath.substring(0, index);
        String volumeUuid = volumePath.substring(index + 1);
        index = volumeUuid.indexOf(".");
        if (index != -1) {
            volumeUuid = volumeUuid.substring(0, index);
        }
        URI uri = null;
        try {
            uri = new URI(nfsStore.getUrl());
        } catch (final Exception e) {
            return new CopyCmdAnswer(e.toString());
        }
        final SR srcSr = createFileSr(conn, uri.getHost() + ":" + uri.getPath(), volumeDirectory);
        Task task = null;
        try {
            final SR primaryStoragePool = hypervisorResource.getStorageRepository(conn, primaryStore.getUuid());
            final VDI srcVdi = VDI.getByUuid(conn, volumeUuid);
            task = srcVdi.copyAsync(conn, primaryStoragePool, null, null);
            // poll every 1 seconds ,
            hypervisorResource.waitForTask(conn, task, 1000, wait * 1000);
            hypervisorResource.checkForSuccess(conn, task);
            final VDI destVdi = Types.toVDI(task, conn);
            final VolumeObjectTO newVol = new VolumeObjectTO();
            destVdi.setNameLabel(conn, srcVolume.getName());
            newVol.setPath(destVdi.getUuid(conn));
            newVol.setSize(srcVolume.getSize());
            return new CopyCmdAnswer(newVol);
        } catch (final Exception e) {
            final String msg = "Catch Exception " + e.getClass().getName() + " due to " + e.toString();
            s_logger.warn(msg, e);
            return new CopyCmdAnswer(e.toString());
        } finally {
            if (task != null) {
                try {
                    task.destroy(conn);
                } catch (final Exception e) {
                    s_logger.warn("unable to destroy task(" + task.toString() + ") due to " + e.toString());
                }
            }
            if (srcSr != null) {
                hypervisorResource.removeSR(conn, srcSr);
            }
        }
    }
    s_logger.debug("unsupported protocol");
    return new CopyCmdAnswer("unsupported protocol");
}