Examples with CopyCmdAnswer org.apache.cloudstack.storage.command.CopyCmdAnswer used on opensource projects

Example 41 with CopyCmdAnswer

use of org.apache.cloudstack.storage.command.CopyCmdAnswer in project cloudstack by apache.

the class XenServerStorageProcessor 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 String primaryStorageNameLabel = srcData.getDataStore().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;
    final String snapshotUuid = snapshotTO.getPath();
    final String volumeUuid = snapshotTO.getVolume().getPath();
    final String prevBackupUuid = snapshotOnImage.getParentSnapshotPath();
    final String prevSnapshotUuid = snapshotTO.getParentSnapshotPath();
    // By default assume failure
    String details = null;
    String snapshotBackupUuid = null;
    Long physicalSize = null;
    final Map<String, String> options = cmd.getOptions();
    boolean fullbackup = Boolean.parseBoolean(options.get("fullSnapshot"));
    boolean result = false;
    try {
        final SR 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);
        }
        final String psUuid = primaryStorageSR.getUuid(conn);
        final Boolean isISCSI = IsISCSI(primaryStorageSR.getType(conn));
        final VDI snapshotVdi = getVDIbyUuid(conn, snapshotUuid);
        String snapshotPaUuid = null;
        if (prevSnapshotUuid != null && !fullbackup) {
            try {
                snapshotPaUuid = getVhdParent(conn, psUuid, snapshotUuid, isISCSI);
                if (snapshotPaUuid != null) {
                    final String snashotPaPaPaUuid = getVhdParent(conn, psUuid, snapshotPaUuid, isISCSI);
                    final String prevSnashotPaUuid = getVhdParent(conn, psUuid, prevSnapshotUuid, isISCSI);
                    if (snashotPaPaPaUuid != null && prevSnashotPaUuid != null && prevSnashotPaUuid.equals(snashotPaPaPaUuid)) {
                        fullbackup = false;
                    } else {
                        fullbackup = true;
                    }
                }
            } catch (final Exception e) {
                s_logger.debug("Failed to get parent snapshots, take full snapshot", e);
                fullbackup = true;
            }
        }
        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) {
            if (!hypervisorResource.createSecondaryStorageFolder(conn, secondaryStorageMountPath, folder)) {
                details = " Filed to create folder " + folder + " in secondary storage";
                s_logger.warn(details);
                return new CopyCmdAnswer(details);
            }
            final String snapshotMountpoint = secondaryStorageUrl + "/" + folder;
            SR snapshotSr = null;
            try {
                snapshotSr = hypervisorResource.createNfsSRbyURI(conn, new URI(snapshotMountpoint), false);
                final VDI backedVdi = hypervisorResource.cloudVDIcopy(conn, snapshotVdi, snapshotSr, wait);
                snapshotBackupUuid = backedVdi.getUuid(conn);
                final String primarySRuuid = snapshotSr.getUuid(conn);
                physicalSize = getSnapshotSize(conn, primarySRuuid, snapshotBackupUuid, isISCSI, wait);
                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 + cacheStore.getPathSeparator() + snapshotBackupUuid;
                }
            } finally {
                if (snapshotSr != null) {
                    hypervisorResource.removeSR(conn, snapshotSr);
                }
            }
        } 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 results = backupSnapshot(conn, primaryStorageSRUuid, localMountPoint, folder, secondaryStorageMountPath, snapshotUuid, prevBackupUuid, isISCSI, wait);
                final String[] tmp = results.split("#");
                snapshotBackupUuid = tmp[1];
                physicalSize = Long.parseLong(tmp[2]);
                finalPath = folder + cacheStore.getPathSeparator() + snapshotBackupUuid;
            }
        }
        // delete primary snapshots with only the last one left
        destroySnapshotOnPrimaryStorageExceptThis(conn, volumeUuid, snapshotUuid);
        final SnapshotObjectTO newSnapshot = new SnapshotObjectTO();
        newSnapshot.setPath(finalPath);
        newSnapshot.setPhysicalSize(physicalSize);
        if (fullbackup) {
            newSnapshot.setParentSnapshotPath(null);
        } else {
            newSnapshot.setParentSnapshotPath(prevBackupUuid);
        }
        result = true;
        return new CopyCmdAnswer(newSnapshot);
    } catch (final 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);
    } finally {
        if (!result) {
            // remove last bad primary snapshot when exception happens
            try {
                destroySnapshotOnPrimaryStorage(conn, snapshotUuid);
            } catch (final Exception e) {
                s_logger.debug("clean up snapshot failed", e);
            }
        }
    }
    return new CopyCmdAnswer(details);
}

Example 42 with CopyCmdAnswer

use of org.apache.cloudstack.storage.command.CopyCmdAnswer in project cloudstack by apache.

the class XenServerStorageProcessor method createVolumeFromSnapshot.

@Override
public Answer createVolumeFromSnapshot(final CopyCommand cmd) {
    final Connection conn = hypervisorResource.getConnection();
    final DataTO srcData = cmd.getSrcTO();
    final SnapshotObjectTO snapshot = (SnapshotObjectTO) srcData;
    final DataTO destData = cmd.getDestTO();
    final DataStoreTO imageStore = srcData.getDataStore();
    if (srcData.getDataStore() instanceof PrimaryDataStoreTO && destData.getDataStore() instanceof PrimaryDataStoreTO) {
        return createVolumeFromSnapshot2(cmd);
    }
    if (!(imageStore instanceof NfsTO)) {
        return new CopyCmdAnswer("unsupported protocol");
    }
    final NfsTO nfsImageStore = (NfsTO) imageStore;
    final String primaryStorageNameLabel = destData.getDataStore().getUuid();
    final String secondaryStorageUrl = nfsImageStore.getUrl();
    final int wait = cmd.getWait();
    boolean result = false;
    // Generic error message.
    String details = null;
    String volumeUUID = null;
    if (secondaryStorageUrl == null) {
        details += " because the URL passed: " + secondaryStorageUrl + " is invalid.";
        return new CopyCmdAnswer(details);
    }
    try {
        final SR primaryStorageSR = hypervisorResource.getSRByNameLabelandHost(conn, primaryStorageNameLabel);
        if (primaryStorageSR == null) {
            throw new InternalErrorException("Could not create volume from snapshot because the primary Storage SR could not be created from the name label: " + primaryStorageNameLabel);
        }
        // Get the absolute path of the snapshot on the secondary storage.
        String snapshotInstallPath = snapshot.getPath();
        final int index = snapshotInstallPath.lastIndexOf(nfsImageStore.getPathSeparator());
        final String snapshotName = snapshotInstallPath.substring(index + 1);
        if (!snapshotName.startsWith("VHD-") && !snapshotName.endsWith(".vhd")) {
            snapshotInstallPath = snapshotInstallPath + ".vhd";
        }
        final URI snapshotURI = new URI(secondaryStorageUrl + nfsImageStore.getPathSeparator() + snapshotInstallPath);
        final String snapshotPath = snapshotURI.getHost() + ":" + snapshotURI.getPath();
        final String srUuid = primaryStorageSR.getUuid(conn);
        volumeUUID = copy_vhd_from_secondarystorage(conn, snapshotPath, srUuid, wait);
        result = true;
        final VDI volume = VDI.getByUuid(conn, volumeUUID);
        final VDI.Record vdir = volume.getRecord(conn);
        final VolumeObjectTO newVol = new VolumeObjectTO();
        newVol.setPath(volumeUUID);
        newVol.setSize(vdir.virtualSize);
        return new CopyCmdAnswer(newVol);
    } catch (final XenAPIException e) {
        details += " due to " + e.toString();
        s_logger.warn(details, e);
    } catch (final Exception e) {
        details += " due to " + e.getMessage();
        s_logger.warn(details, e);
    }
    if (!result) {
        // Is this logged at a higher level?
        s_logger.error(details);
    }
    // In all cases return something.
    return new CopyCmdAnswer(details);
}

Example 43 with CopyCmdAnswer

use of org.apache.cloudstack.storage.command.CopyCmdAnswer in project cloudstack by apache.

the class XenServerStorageProcessor method createTemplateFromSnapshot.

@Override
public Answer createTemplateFromSnapshot(final CopyCommand cmd) {
    final Connection conn = hypervisorResource.getConnection();
    final SnapshotObjectTO snapshotObjTO = (SnapshotObjectTO) cmd.getSrcTO();
    final TemplateObjectTO templateObjTO = (TemplateObjectTO) cmd.getDestTO();
    if (!(snapshotObjTO.getDataStore() instanceof PrimaryDataStoreTO) || !(templateObjTO.getDataStore() instanceof NfsTO)) {
        return null;
    }
    final String userSpecifiedTemplateName = templateObjTO.getName();
    NfsTO destStore = null;
    URI destUri = null;
    try {
        destStore = (NfsTO) templateObjTO.getDataStore();
        destUri = new URI(destStore.getUrl());
    } catch (final Exception ex) {
        s_logger.debug("Invalid URI", ex);
        return new CopyCmdAnswer("Invalid URI: " + ex.toString());
    }
    SR srcSr = null;
    SR destSr = null;
    final String destDir = templateObjTO.getPath();
    VDI destVdi = null;
    boolean result = false;
    try {
        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);
        srcSr = hypervisorResource.getIscsiSR(conn, iScsiName, storageHost, iScsiName, chapInitiatorUsername, chapInitiatorSecret, true);
        final String destNfsPath = destUri.getHost() + ":" + destUri.getPath();
        if (!hypervisorResource.createSecondaryStorageFolder(conn, destNfsPath, destDir)) {
            final String details = " Failed to create folder " + destDir + " in secondary storage";
            s_logger.warn(details);
            return new CopyCmdAnswer(details);
        }
        final URI templateUri = new URI(destStore.getUrl() + "/" + destDir);
        destSr = hypervisorResource.createNfsSRbyURI(conn, templateUri, false);
        // there should only be one VDI in this SR
        final VDI srcVdi = srcSr.getVDIs(conn).iterator().next();
        destVdi = srcVdi.copy(conn, destSr);
        // scan makes XenServer pick up VDI physicalSize
        destSr.scan(conn);
        if (userSpecifiedTemplateName != null) {
            destVdi.setNameLabel(conn, userSpecifiedTemplateName);
        }
        final String templateUuid = destVdi.getUuid(conn);
        final String templateFilename = templateUuid + ".vhd";
        final long virtualSize = destVdi.getVirtualSize(conn);
        final long physicalSize = destVdi.getPhysicalUtilisation(conn);
        // create the template.properties file
        String templatePath = destNfsPath + "/" + destDir;
        templatePath = templatePath.replaceAll("//", "/");
        result = hypervisorResource.postCreatePrivateTemplate(conn, templatePath, templateFilename, templateUuid, userSpecifiedTemplateName, null, physicalSize, virtualSize, templateObjTO.getId());
        if (!result) {
            throw new CloudRuntimeException("Could not create the template.properties file on secondary storage dir: " + templateUri);
        }
        final TemplateObjectTO newTemplate = new TemplateObjectTO();
        newTemplate.setPath(destDir + "/" + templateFilename);
        newTemplate.setFormat(Storage.ImageFormat.VHD);
        newTemplate.setHypervisorType(HypervisorType.XenServer);
        newTemplate.setSize(virtualSize);
        newTemplate.setPhysicalSize(physicalSize);
        newTemplate.setName(templateUuid);
        result = true;
        return new CopyCmdAnswer(newTemplate);
    } catch (final Exception ex) {
        s_logger.error("Failed to create a template from a snapshot", ex);
        return new CopyCmdAnswer("Failed to create a template from a snapshot: " + ex.toString());
    } finally {
        if (!result) {
            if (destVdi != null) {
                try {
                    destVdi.destroy(conn);
                } catch (final Exception e) {
                    s_logger.debug("Cleaned up leftover VDI on destination storage due to failure: ", e);
                }
            }
        }
        if (srcSr != null) {
            hypervisorResource.removeSR(conn, srcSr);
        }
        if (destSr != null) {
            hypervisorResource.removeSR(conn, destSr);
        }
    }
}

Example 44 with CopyCmdAnswer

use of org.apache.cloudstack.storage.command.CopyCmdAnswer in project cloudstack by apache.

the class XenServerStorageProcessor method copyTemplateToPrimaryStorage.

@Override
public Answer copyTemplateToPrimaryStorage(final CopyCommand cmd) {
    final DataTO srcDataTo = cmd.getSrcTO();
    final DataTO destDataTo = cmd.getDestTO();
    final int wait = cmd.getWait();
    final DataStoreTO srcDataStoreTo = srcDataTo.getDataStore();
    final Connection conn = hypervisorResource.getConnection();
    SR sr = null;
    boolean removeSrAfterCopy = false;
    try {
        if (srcDataStoreTo instanceof NfsTO && srcDataTo.getObjectType() == DataObjectType.TEMPLATE) {
            final NfsTO srcImageStore = (NfsTO) srcDataStoreTo;
            final TemplateObjectTO srcTemplateObjectTo = (TemplateObjectTO) srcDataTo;
            final String storeUrl = srcImageStore.getUrl();
            final URI uri = new URI(storeUrl);
            final String tmplPath = uri.getHost() + ":" + uri.getPath() + "/" + srcDataTo.getPath();
            final DataStoreTO destDataStoreTo = destDataTo.getDataStore();
            boolean managed = false;
            String storageHost = null;
            String managedStoragePoolName = null;
            String managedStoragePoolRootVolumeName = null;
            String managedStoragePoolRootVolumeSize = null;
            String chapInitiatorUsername = null;
            String chapInitiatorSecret = null;
            if (destDataStoreTo instanceof PrimaryDataStoreTO) {
                final PrimaryDataStoreTO destPrimaryDataStoreTo = (PrimaryDataStoreTO) destDataStoreTo;
                final Map<String, String> details = destPrimaryDataStoreTo.getDetails();
                if (details != null) {
                    managed = Boolean.parseBoolean(details.get(PrimaryDataStoreTO.MANAGED));
                    if (managed) {
                        storageHost = details.get(PrimaryDataStoreTO.STORAGE_HOST);
                        managedStoragePoolName = details.get(PrimaryDataStoreTO.MANAGED_STORE_TARGET);
                        managedStoragePoolRootVolumeName = details.get(PrimaryDataStoreTO.MANAGED_STORE_TARGET_ROOT_VOLUME);
                        managedStoragePoolRootVolumeSize = details.get(PrimaryDataStoreTO.VOLUME_SIZE);
                        chapInitiatorUsername = details.get(PrimaryDataStoreTO.CHAP_INITIATOR_USERNAME);
                        chapInitiatorSecret = details.get(PrimaryDataStoreTO.CHAP_INITIATOR_SECRET);
                        removeSrAfterCopy = Boolean.parseBoolean(details.get(PrimaryDataStoreTO.REMOVE_AFTER_COPY));
                    }
                }
            }
            if (managed) {
                final Map<String, String> details = new HashMap<String, String>();
                details.put(DiskTO.STORAGE_HOST, storageHost);
                details.put(DiskTO.IQN, managedStoragePoolName);
                details.put(DiskTO.VOLUME_SIZE, managedStoragePoolRootVolumeSize);
                details.put(DiskTO.CHAP_INITIATOR_USERNAME, chapInitiatorUsername);
                details.put(DiskTO.CHAP_INITIATOR_SECRET, chapInitiatorSecret);
                sr = hypervisorResource.prepareManagedSr(conn, details);
            } else {
                final String srName = destDataStoreTo.getUuid();
                final Set<SR> srs = SR.getByNameLabel(conn, srName);
                if (srs.size() != 1) {
                    final String msg = "There are " + srs.size() + " SRs with same name: " + srName;
                    s_logger.warn(msg);
                    return new CopyCmdAnswer(msg);
                } else {
                    sr = srs.iterator().next();
                }
            }
            final String srUuid = sr.getUuid(conn);
            final String tmplUuid = copy_vhd_from_secondarystorage(conn, tmplPath, srUuid, wait);
            final VDI tmplVdi = getVDIbyUuid(conn, tmplUuid);
            final String uuidToReturn;
            final Long physicalSize = tmplVdi.getPhysicalUtilisation(conn);
            if (managed) {
                uuidToReturn = tmplUuid;
                tmplVdi.setNameLabel(conn, managedStoragePoolRootVolumeName);
            } else {
                final VDI snapshotVdi = tmplVdi.snapshot(conn, new HashMap<String, String>());
                uuidToReturn = snapshotVdi.getUuid(conn);
                snapshotVdi.setNameLabel(conn, "Template " + srcTemplateObjectTo.getName());
                tmplVdi.destroy(conn);
            }
            sr.scan(conn);
            try {
                Thread.sleep(5000);
            } catch (final InterruptedException e) {
            }
            final TemplateObjectTO newVol = new TemplateObjectTO();
            newVol.setUuid(uuidToReturn);
            newVol.setPath(uuidToReturn);
            if (physicalSize != null) {
                newVol.setSize(physicalSize);
            }
            newVol.setFormat(ImageFormat.VHD);
            return new CopyCmdAnswer(newVol);
        }
    } catch (final Exception e) {
        final String msg = "Catch Exception " + e.getClass().getName() + " for template + " + " due to " + e.toString();
        s_logger.warn(msg, e);
        return new CopyCmdAnswer(msg);
    } finally {
        if (removeSrAfterCopy && sr != null) {
            hypervisorResource.removeSR(conn, sr);
        }
    }
    return new CopyCmdAnswer("not implemented yet");
}

Example 45 with CopyCmdAnswer

use of org.apache.cloudstack.storage.command.CopyCmdAnswer 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);
        }
    }
}