Examples with DriverTask com.emc.storageos.storagedriver.DriverTask used on opensource projects

Example 66 with DriverTask

use of com.emc.storageos.storagedriver.DriverTask in project coprhd-controller by CoprHD.

the class ExternalDeviceExportOperations method addVolumes.

@Override
public void addVolumes(StorageSystem storage, URI exportMaskUri, VolumeURIHLU[] volumeURIHLUs, List<com.emc.storageos.db.client.model.Initiator> initiatorList, TaskCompleter taskCompleter) throws DeviceControllerException {
    log.info("{} addVolumes START...", storage.getSerialNumber());
    try {
        log.info("addVolumes: Export mask id: {}", exportMaskUri);
        log.info("addVolumes: New volumes to add: volume-HLU pairs: {}", Joiner.on(',').join(volumeURIHLUs));
        if (initiatorList != null) {
            log.info("addVolumes: initiators: {}", Joiner.on(',').join(initiatorList));
        }
        BlockStorageDriver driver = externalDevice.getDriver(storage.getSystemType());
        ExportMask exportMask = (ExportMask) dbClient.queryObject(exportMaskUri);
        StringSet maskInitiators = exportMask.getInitiators();
        List<String> maskInitiatorList = new ArrayList<>();
        for (String initiatorUri : maskInitiators) {
            maskInitiatorList.add(initiatorUri);
        }
        log.info("Export mask existing initiators: {} ", Joiner.on(',').join(maskInitiatorList));
        StringSet storagePorts = exportMask.getStoragePorts();
        List<URI> portList = new ArrayList<>();
        for (String portUri : storagePorts) {
            portList.add(URI.create(portUri));
        }
        log.info("Export mask existing storage ports: {} ", Joiner.on(',').join(portList));
        // Get export group uri from task completer
        URI exportGroupUri = taskCompleter.getId();
        ExportGroup exportGroup = (ExportGroup) dbClient.queryObject(exportGroupUri);
        Set<URI> volumeUris = new HashSet<>();
        for (VolumeURIHLU volumeURIHLU : volumeURIHLUs) {
            URI volumeURI = volumeURIHLU.getVolumeURI();
            volumeUris.add(volumeURI);
        }
        // Prepare volumes. We send to driver only new volumes for the export mask.
        List<StorageVolume> driverVolumes = new ArrayList<>();
        Map<String, String> driverVolumeToHLUMap = new HashMap<>();
        Map<String, URI> volumeNativeIdToUriMap = new HashMap<>();
        prepareVolumes(storage, volumeURIHLUs, driverVolumes, driverVolumeToHLUMap, volumeNativeIdToUriMap);
        // Prepare initiators
        Set<com.emc.storageos.db.client.model.Initiator> initiators = ExportMaskUtils.getInitiatorsForExportMask(dbClient, exportMask, null);
        List<Initiator> driverInitiators = new ArrayList<>();
        prepareInitiators(initiators, exportGroup.forCluster(), driverInitiators);
        // Prepare target storage ports
        List<StoragePort> recommendedPorts = new ArrayList<>();
        List<StoragePort> availablePorts = new ArrayList<>();
        List<StoragePort> selectedPorts = new ArrayList<>();
        // Prepare ports for driver call. Populate lists of recommended and available ports.
        Map<String, com.emc.storageos.db.client.model.StoragePort> nativeIdToAvailablePortMap = new HashMap<>();
        // We use existing ports in the mask as recommended ports.
        preparePorts(storage, exportMaskUri, portList, recommendedPorts, availablePorts, nativeIdToAvailablePortMap);
        log.info("varray ports: {}", nativeIdToAvailablePortMap);
        // For add volumes to existing export mask, we do not allow storage port change in the mask.
        // Only ports in the mask are available for driver call.
        availablePorts = recommendedPorts;
        ExportPathParams pathParams = blockScheduler.calculateExportPathParamForVolumes(volumeUris, exportGroup.getNumPaths(), storage.getId(), exportGroupUri);
        StorageCapabilities capabilities = new StorageCapabilities();
        // Prepare num paths to send to driver
        prepareCapabilities(pathParams, capabilities);
        MutableBoolean usedRecommendedPorts = new MutableBoolean(true);
        // Ready to call driver
        DriverTask task = driver.exportVolumesToInitiators(driverInitiators, driverVolumes, driverVolumeToHLUMap, recommendedPorts, availablePorts, capabilities, usedRecommendedPorts, selectedPorts);
        // todo: need to implement support for async case.
        if (task.getStatus() == DriverTask.TaskStatus.READY) {
            String msg = String.format("Created export for volumes: %s . Used recommended ports: %s .", task.getMessage(), usedRecommendedPorts);
            log.info(msg);
            log.info("Driver selected storage ports: {} ", Joiner.on(',').join(selectedPorts));
            // auto san zoning is enabled, we will fail the request.
            if (usedRecommendedPorts.isFalse() && !selectedPorts.containsAll(recommendedPorts)) {
                // for auto san zoning enabled we can not support case when selected ports do not include ports which are already in the mask
                VirtualArray varray = dbClient.queryObject(VirtualArray.class, exportGroup.getVirtualArray());
                log.info("AutoSanZoning for varray {} is {} ", varray.getLabel(), varray.getAutoSanZoning());
                if (varray.getAutoSanZoning()) {
                    String errorMsg = String.format("AutoSanZoning is enabled and driver selected ports do not contain ports from the export mask: %s .", task.getMessage());
                    log.error(errorMsg);
                    ServiceError serviceError = ExternalDeviceException.errors.addVolumesToExportMaskFailed("addVolumes", errorMsg);
                    taskCompleter.error(dbClient, serviceError);
                } else {
                    // auto san zoning is disabled --- add new selected ports to the mask
                    // we do not care about zoning map in this case
                    List<com.emc.storageos.db.client.model.StoragePort> selectedPortsForMask = new ArrayList<>();
                    for (StoragePort driverPort : selectedPorts) {
                        log.info("Driver selected port: {}", driverPort);
                        com.emc.storageos.db.client.model.StoragePort port = nativeIdToAvailablePortMap.get(driverPort.getNativeId());
                        if (port != null) {
                            // add all ports, StringSet in the mask will ignore duplicates
                            log.info("System port: {}", port);
                            selectedPortsForMask.add(port);
                        }
                    }
                    for (com.emc.storageos.db.client.model.StoragePort port : selectedPortsForMask) {
                        exportMask.addTarget(port.getId());
                    }
                    dbClient.updateObject(exportMask);
                    taskCompleter.ready(dbClient);
                }
            } else {
                // Update volumes Lun Ids in export mask based on driver selection
                for (String volumeNativeId : driverVolumeToHLUMap.keySet()) {
                    String targetLunId = driverVolumeToHLUMap.get(volumeNativeId);
                    URI volumeUri = volumeNativeIdToUriMap.get(volumeNativeId);
                    exportMask.getVolumes().put(volumeUri.toString(), targetLunId);
                }
                dbClient.updateObject(exportMask);
                taskCompleter.ready(dbClient);
            }
        } else {
            String errorMsg = String.format("Failed to add volumes to export mask: %s .", task.getMessage());
            log.error(errorMsg);
            ServiceError serviceError = ExternalDeviceException.errors.addVolumesToExportMaskFailed("addVolumes", errorMsg);
            taskCompleter.error(dbClient, serviceError);
        }
    } catch (Exception ex) {
        log.error("Problem in addVolumes: ", ex);
        String errorMsg = String.format("Failed to add volumes to export mask: %s .", ex.getMessage());
        log.error(errorMsg);
        ServiceError serviceError = ExternalDeviceException.errors.addVolumesToExportMaskFailed("addVolumes", errorMsg);
        taskCompleter.error(dbClient, serviceError);
    }
    log.info("{} addVolumes END...", storage.getSerialNumber());
}

Example 67 with DriverTask

use of com.emc.storageos.storagedriver.DriverTask in project coprhd-controller by CoprHD.

the class ExternalDeviceExportOperations method removeInitiators.

@Override
public void removeInitiators(StorageSystem storage, URI exportMaskUri, List<URI> volumeURIList, List<com.emc.storageos.db.client.model.Initiator> initiatorList, List<URI> targetURIList, TaskCompleter taskCompleter) throws DeviceControllerException {
    log.info("{} removeInitiators START...", storage.getSerialNumber());
    try {
        log.info("removeInitiators: Export mask id: {}", exportMaskUri);
        if (volumeURIList != null) {
            log.info("removeInitiators: volumes : {}", Joiner.on(',').join(volumeURIList));
        }
        log.info("removeInitiators: initiators : {}", Joiner.on(',').join(initiatorList));
        log.info("removeInitiators: targets : {}", Joiner.on(',').join(targetURIList));
        BlockStorageDriver driver = externalDevice.getDriver(storage.getSystemType());
        ExportMask exportMask = (ExportMask) dbClient.queryObject(exportMaskUri);
        List<URI> volumeUris = ExportMaskUtils.getVolumeURIs(exportMask);
        log.info("Export mask existing volumes: {} ", volumeUris);
        // Prepare volumes
        List<StorageVolume> driverVolumes = new ArrayList<>();
        prepareVolumes(storage, volumeUris, driverVolumes);
        // Prepare initiators
        List<Initiator> driverInitiators = new ArrayList<>();
        // Get export group uri from task completer
        URI exportGroupUri = taskCompleter.getId();
        ExportGroup exportGroup = (ExportGroup) dbClient.queryObject(exportGroupUri);
        prepareInitiators(initiatorList, exportGroup.forCluster(), driverInitiators);
        // Ready to call driver
        DriverTask task = driver.unexportVolumesFromInitiators(driverInitiators, driverVolumes);
        // todo: need to implement support for async case.
        if (task.getStatus() == DriverTask.TaskStatus.READY) {
            String msg = String.format("Removed initiators from export mask: %s.", task.getMessage());
            log.info(msg);
            taskCompleter.ready(dbClient);
        } else {
            String errorMsg = String.format("Failed to remove initiators from export mask: %s .", task.getMessage());
            log.error(errorMsg);
            ServiceError serviceError = ExternalDeviceException.errors.removeInitiatorsFromExportMaskFailed("removeInitiators", errorMsg);
            taskCompleter.error(dbClient, serviceError);
        }
    } catch (Exception ex) {
        log.error("Problem in removeInitiators: ", ex);
        String errorMsg = String.format("Failed to remove initiators from export mask: %s .", ex.getMessage());
        log.error(errorMsg);
        ServiceError serviceError = ExternalDeviceException.errors.removeInitiatorsFromExportMaskFailed("removeInitiators", errorMsg);
        taskCompleter.error(dbClient, serviceError);
    }
    log.info("{} removeInitiators END...", storage.getSerialNumber());
}

Example 68 with DriverTask

use of com.emc.storageos.storagedriver.DriverTask in project coprhd-controller by CoprHD.

the class ExternalDeviceExportOperations method addInitiators.

@Override
public void addInitiators(StorageSystem storage, URI exportMaskUri, List<URI> volumeURIs, List<com.emc.storageos.db.client.model.Initiator> initiatorList, List<URI> targetURIList, TaskCompleter taskCompleter) throws DeviceControllerException {
    log.info("{} addInitiators START...", storage.getSerialNumber());
    try {
        log.info("addInitiators: Export mask id: {}", exportMaskUri);
        if (volumeURIs != null) {
            log.info("addInitiators: volumes : {}", Joiner.on(',').join(volumeURIs));
        }
        log.info("addInitiators: initiators : {}", Joiner.on(',').join(initiatorList));
        log.info("addInitiators: targets : {}", Joiner.on(",").join(targetURIList));
        BlockStorageDriver driver = externalDevice.getDriver(storage.getSystemType());
        ExportMask exportMask = (ExportMask) dbClient.queryObject(exportMaskUri);
        // Get export group uri from task completer
        URI exportGroupUri = taskCompleter.getId();
        ExportGroup exportGroup = (ExportGroup) dbClient.queryObject(exportGroupUri);
        List<URI> volumeUris = ExportMaskUtils.getVolumeURIs(exportMask);
        // Prepare volumes
        List<StorageVolume> driverVolumes = new ArrayList<>();
        Map<String, String> driverVolumeToHLUMap = new HashMap<>();
        Map<String, String> volumeNativeIdToUriMap = new HashMap<>();
        prepareVolumes(storage, exportMask.getVolumes(), driverVolumes, driverVolumeToHLUMap, volumeNativeIdToUriMap);
        // Prepare initiators
        List<Initiator> driverInitiators = new ArrayList<>();
        prepareInitiators(initiatorList, exportGroup.forCluster(), driverInitiators);
        // Prepare target storage ports
        List<StoragePort> recommendedPorts = new ArrayList<>();
        List<StoragePort> availablePorts = new ArrayList<>();
        List<StoragePort> selectedPorts = new ArrayList<>();
        // Prepare ports for driver call. Populate lists of recommended and available ports.
        Map<String, com.emc.storageos.db.client.model.StoragePort> nativeIdToAvailablePortMap = new HashMap<>();
        preparePorts(storage, exportMaskUri, targetURIList, recommendedPorts, availablePorts, nativeIdToAvailablePortMap);
        ExportPathParams pathParams = blockScheduler.calculateExportPathParamForVolumes(volumeUris, exportGroup.getNumPaths(), storage.getId(), exportGroupUri);
        StorageCapabilities capabilities = new StorageCapabilities();
        // Prepare num paths to send to driver
        prepareCapabilitiesForAddInitiators(pathParams, exportMask.getZoningMap(), exportGroup.getVirtualArray(), initiatorList, capabilities);
        MutableBoolean usedRecommendedPorts = new MutableBoolean(true);
        // Ready to call driver
        DriverTask task = driver.exportVolumesToInitiators(driverInitiators, driverVolumes, driverVolumeToHLUMap, recommendedPorts, availablePorts, capabilities, usedRecommendedPorts, selectedPorts);
        // todo: need to implement support for async case.
        if (task.getStatus() == DriverTask.TaskStatus.READY) {
            // If driver used recommended ports, we are done.
            // Otherwise, if driver did not use recommended ports, we have to get ports selected by driver
            // and use them in export mask and zones.
            // We will verify driver selected ports against available ports list.
            String msg = String.format("addInitiators -- Added initiators: %s . Used recommended ports: %s .", task.getMessage(), usedRecommendedPorts);
            log.info(msg);
            if (usedRecommendedPorts.isFalse()) {
                // process driver selected ports
                log.info("Ports selected by driver: {}", selectedPorts);
                if (validateSelectedPorts(availablePorts, selectedPorts, pathParams.getPathsPerInitiator())) {
                    List<com.emc.storageos.db.client.model.StoragePort> selectedPortsForMask = new ArrayList<>();
                    URI varrayUri = exportGroup.getVirtualArray();
                    for (StoragePort driverPort : selectedPorts) {
                        com.emc.storageos.db.client.model.StoragePort port = nativeIdToAvailablePortMap.get(driverPort.getNativeId());
                        selectedPortsForMask.add(port);
                    }
                    updateStoragePortsForAddInitiators((ExportMaskAddInitiatorCompleter) taskCompleter, storage, exportMask, initiatorList, selectedPortsForMask, varrayUri, pathParams);
                    taskCompleter.ready(dbClient);
                } else {
                    // selected ports are not valid. failure
                    String errorMsg = "addInitiators -- Ports selected by driver failed validation.";
                    log.error("addInitiators -- Ports selected by driver failed validation.");
                    ServiceError serviceError = ExternalDeviceException.errors.addInitiatorsToExportMaskFailed("addInitiators", errorMsg);
                    taskCompleter.error(dbClient, serviceError);
                }
            } else {
                // Used recommended ports.
                taskCompleter.ready(dbClient);
            }
        } else {
            String errorMsg = String.format("addInitiators -- Failed to add initiators to export mask: %s .", task.getMessage());
            log.error(errorMsg);
            ServiceError serviceError = ExternalDeviceException.errors.addInitiatorsToExportMaskFailed("addInitiators", errorMsg);
            taskCompleter.error(dbClient, serviceError);
        }
    } catch (Exception ex) {
        log.error("addInitiators -- Failed to add initiators to export mask. ", ex);
        ServiceError serviceError = ExternalDeviceException.errors.addInitiatorsToExportMaskFailed("addInitiators", ex.getMessage());
        taskCompleter.error(dbClient, serviceError);
    }
    log.info("{} addInitiators END...", storage.getSerialNumber());
}

Example 69 with DriverTask

use of com.emc.storageos.storagedriver.DriverTask in project coprhd-controller by CoprHD.

the class ExternalDeviceExportOperations method createExportMask.

@Override
public void createExportMask(StorageSystem storage, URI exportMaskUri, VolumeURIHLU[] volumeURIHLUs, List<URI> targetURIList, List<com.emc.storageos.db.client.model.Initiator> initiatorList, TaskCompleter taskCompleter) throws DeviceControllerException {
    log.info("{} createExportMask START...", storage.getSerialNumber());
    try {
        log.info("createExportMask: Export mask id: {}", exportMaskUri);
        log.info("createExportMask: volume-HLU pairs: {}", Joiner.on(',').join(volumeURIHLUs));
        log.info("createExportMask: initiators: {}", Joiner.on(',').join(initiatorList));
        log.info("createExportMask: assignments: {}", Joiner.on(',').join(targetURIList));
        BlockStorageDriver driver = externalDevice.getDriver(storage.getSystemType());
        ExportMask exportMask = (ExportMask) dbClient.queryObject(exportMaskUri);
        // Get export group uri from task completer
        URI exportGroupUri = taskCompleter.getId();
        ExportGroup exportGroup = (ExportGroup) dbClient.queryObject(exportGroupUri);
        Set<URI> volumeUris = new HashSet<>();
        for (VolumeURIHLU volumeURIHLU : volumeURIHLUs) {
            URI volumeURI = volumeURIHLU.getVolumeURI();
            volumeUris.add(volumeURI);
        }
        // Prepare volumes
        List<StorageVolume> driverVolumes = new ArrayList<>();
        Map<String, String> driverVolumeToHLUMap = new HashMap<>();
        Map<String, URI> volumeNativeIdToUriMap = new HashMap<>();
        prepareVolumes(storage, volumeURIHLUs, driverVolumes, driverVolumeToHLUMap, volumeNativeIdToUriMap);
        // Prepare initiators
        List<Initiator> driverInitiators = new ArrayList<>();
        prepareInitiators(initiatorList, exportGroup.forCluster(), driverInitiators);
        // Prepare target storage ports
        List<StoragePort> recommendedPorts = new ArrayList<>();
        List<StoragePort> availablePorts = new ArrayList<>();
        List<StoragePort> selectedPorts = new ArrayList<>();
        // Prepare ports for driver call. Populate lists of recommended and available ports.
        Map<String, com.emc.storageos.db.client.model.StoragePort> nativeIdToAvailablePortMap = new HashMap<>();
        preparePorts(storage, exportMaskUri, targetURIList, recommendedPorts, availablePorts, nativeIdToAvailablePortMap);
        ExportPathParams pathParams = blockScheduler.calculateExportPathParamForVolumes(volumeUris, exportGroup.getNumPaths(), storage.getId(), exportGroupUri);
        StorageCapabilities capabilities = new StorageCapabilities();
        // Prepare num paths to send to driver
        prepareCapabilities(pathParams, capabilities);
        MutableBoolean usedRecommendedPorts = new MutableBoolean(true);
        // Ready to call driver
        DriverTask task = driver.exportVolumesToInitiators(driverInitiators, driverVolumes, driverVolumeToHLUMap, recommendedPorts, availablePorts, capabilities, usedRecommendedPorts, selectedPorts);
        // todo: need to implement support for async case.
        if (task.getStatus() == DriverTask.TaskStatus.READY) {
            // If driver used recommended ports, we are done.
            // Otherwise, if driver did not use recommended ports, we have to get ports selected by driver
            // and use them in export mask and zones.
            // We will verify driver selected ports against available ports list.
            String msg = String.format("createExportMask -- Created export: %s . Used recommended ports: %s .", task.getMessage(), usedRecommendedPorts);
            log.info(msg);
            log.info("Recommended ports: {}", recommendedPorts);
            log.info("Available ports: {}", availablePorts);
            log.info("Selected ports: {}", selectedPorts);
            if (usedRecommendedPorts.isFalse()) {
                // process driver selected ports
                if (validateSelectedPorts(availablePorts, selectedPorts, pathParams.getMinPaths())) {
                    List<com.emc.storageos.db.client.model.StoragePort> selectedPortsForMask = new ArrayList<>();
                    for (StoragePort driverPort : selectedPorts) {
                        com.emc.storageos.db.client.model.StoragePort port = nativeIdToAvailablePortMap.get(driverPort.getNativeId());
                        selectedPortsForMask.add(port);
                    }
                    updateStoragePortsInExportMask(exportMask, exportGroup, selectedPortsForMask);
                    // Update volumes Lun Ids in export mask based on driver selection
                    for (String volumeNativeId : driverVolumeToHLUMap.keySet()) {
                        String targetLunId = driverVolumeToHLUMap.get(volumeNativeId);
                        URI volumeUri = volumeNativeIdToUriMap.get(volumeNativeId);
                        exportMask.getVolumes().put(volumeUri.toString(), targetLunId);
                    }
                    dbClient.updateObject(exportMask);
                    taskCompleter.ready(dbClient);
                } else {
                    // selected ports are not valid. failure
                    String errorMsg = "createExportMask -- Ports selected by driver failed validation.";
                    log.error("createExportMask -- Ports selected by driver failed validation.");
                    ServiceError serviceError = ExternalDeviceException.errors.createExportMaskFailed("createExportMask", errorMsg);
                    taskCompleter.error(dbClient, serviceError);
                }
            } else {
                // Update volumes Lun Ids in export mask based on driver selection
                for (String volumeNativeId : driverVolumeToHLUMap.keySet()) {
                    String targetLunId = driverVolumeToHLUMap.get(volumeNativeId);
                    URI volumeUri = volumeNativeIdToUriMap.get(volumeNativeId);
                    exportMask.getVolumes().put(volumeUri.toString(), targetLunId);
                }
                dbClient.updateObject(exportMask);
                taskCompleter.ready(dbClient);
            }
        } else {
            String errorMsg = String.format("createExportMask -- Failed to create export: %s .", task.getMessage());
            log.error(errorMsg);
            ServiceError serviceError = ExternalDeviceException.errors.createExportMaskFailed("createExportMask", errorMsg);
            taskCompleter.error(dbClient, serviceError);
        }
    } catch (Exception ex) {
        log.error("Problem in createExportMask: ", ex);
        log.error("createExportMask -- Failed to create export mask. ", ex);
        ServiceError serviceError = ExternalDeviceException.errors.createExportMaskFailed("createExportMask", ex.getMessage());
        taskCompleter.error(dbClient, serviceError);
    }
    log.info("{} createExportMask END...", storage.getSerialNumber());
}

Example 70 with DriverTask

use of com.emc.storageos.storagedriver.DriverTask in project coprhd-controller by CoprHD.

the class ExternalDeviceExportOperations method deleteExportMask.

@Override
public void deleteExportMask(StorageSystem storage, URI exportMaskUri, List<URI> volumeUrisList, List<URI> targetUris, List<com.emc.storageos.db.client.model.Initiator> initiators, TaskCompleter taskCompleter) throws DeviceControllerException {
    // Unexport export mask volumes from export mask initiators.
    log.info("{} deleteExportMask START...", storage.getSerialNumber());
    try {
        log.info("deleteExportMask: Export mask id: {}", exportMaskUri);
        if (volumeUrisList != null) {
            log.info("deleteExportMask: volumes:  {}", Joiner.on(',').join(volumeUrisList));
        }
        if (targetUris != null) {
            log.info("deleteExportMask: assignments: {}", Joiner.on(',').join(targetUris));
        }
        if (initiators != null) {
            log.info("deleteExportMask: initiators: {}", Joiner.on(',').join(initiators));
        }
        BlockStorageDriver driver = externalDevice.getDriver(storage.getSystemType());
        ExportMask exportMask = (ExportMask) dbClient.queryObject(exportMaskUri);
        List<URI> volumeUris = new ArrayList<>();
        StringMap maskVolumes = exportMask.getVolumes();
        if (maskVolumes != null) {
            for (String vol : maskVolumes.keySet()) {
                URI volumeURI = URI.create(vol);
                volumeUris.add(volumeURI);
            }
        }
        StringSet maskInitiatorUris = exportMask.getInitiators();
        List<String> initiatorUris = new ArrayList<>();
        for (String initiatorUri : maskInitiatorUris) {
            initiatorUris.add(initiatorUri);
        }
        log.info("Export mask existing initiators: {} ", Joiner.on(',').join(initiatorUris));
        StringMap volumes = exportMask.getVolumes();
        log.info("Export mask existing volumes: {} ", volumes != null ? Joiner.on(',').join(volumes.keySet()) : null);
        // Prepare volumes.
        List<StorageVolume> driverVolumes = new ArrayList<>();
        prepareVolumes(storage, volumeUris, driverVolumes);
        // Prepare initiators
        List<Initiator> driverInitiators = new ArrayList<>();
        Set<com.emc.storageos.db.client.model.Initiator> maskInitiators = ExportMaskUtils.getInitiatorsForExportMask(dbClient, exportMask, null);
        // Get export group uri from task completer
        URI exportGroupUri = taskCompleter.getId();
        ExportGroup exportGroup = (ExportGroup) dbClient.queryObject(exportGroupUri);
        prepareInitiators(maskInitiators, exportGroup.forCluster(), driverInitiators);
        // Ready to call driver
        log.info("Initiators to call driver: {} ", maskInitiators);
        log.info("Volumes to call driver: {} ", volumeUris);
        DriverTask task = driver.unexportVolumesFromInitiators(driverInitiators, driverVolumes);
        // todo: need to implement support for async case.
        if (task.getStatus() == DriverTask.TaskStatus.READY) {
            String msg = String.format("Deleted export mask: %s.", task.getMessage());
            log.info(msg);
            taskCompleter.ready(dbClient);
        } else {
            String errorMsg = String.format("Failed to delete export mask: %s .", task.getMessage());
            log.error(errorMsg);
            ServiceError serviceError = ExternalDeviceException.errors.deleteExportMaskFailed("deleteExportMask", errorMsg);
            taskCompleter.error(dbClient, serviceError);
        }
    } catch (Exception ex) {
        log.error("Problem in deleteExportMask: ", ex);
        String errorMsg = String.format("Failed to delete export mask: %s .", ex.getMessage());
        log.error(errorMsg);
        ServiceError serviceError = ExternalDeviceException.errors.deleteExportMaskFailed("deleteExportMask", errorMsg);
        taskCompleter.error(dbClient, serviceError);
    }
    log.info("{} deleteExportMask END...", storage.getSerialNumber());
}