Github user DaanHoogland commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1403#discussion_r62875028
--- Diff:
engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/StorageSystemDataMotionStrategy.java
---
@@ -172,78 +254,214 @@ private void validate(SnapshotInfo snapshotInfo) {
}
}
- private Void handleCreateTemplateFromSnapshot(SnapshotInfo
snapshotInfo, TemplateInfo templateInfo,
AsyncCompletionCallback<CopyCommandResult> callback) {
+ private boolean usingBackendSnapshotFor(SnapshotInfo snapshotInfo) {
+ String property = getProperty(snapshotInfo.getId(),
"takeSnapshot");
+
+ return Boolean.parseBoolean(property);
+ }
+
+ private void handleCreateTemplateFromSnapshot(SnapshotInfo
snapshotInfo, TemplateInfo templateInfo,
AsyncCompletionCallback<CopyCommandResult> callback) {
try {
snapshotInfo.processEvent(Event.CopyingRequested);
}
catch (Exception ex) {
throw new CloudRuntimeException("This snapshot is not
currently in a state where it can be used to create a template.");
}
- HostVO hostVO = getHost(snapshotInfo.getDataStore().getId());
- DataStore srcDataStore = snapshotInfo.getDataStore();
+ HostVO hostVO = getHost(snapshotInfo);
- String value =
_configDao.getValue(Config.PrimaryStorageDownloadWait.toString());
- int primaryStorageDownloadWait = NumbersUtil.parseInt(value,
Integer.parseInt(Config.PrimaryStorageDownloadWait.getDefaultValue()));
- CopyCommand copyCommand = new CopyCommand(snapshotInfo.getTO(),
templateInfo.getTO(), primaryStorageDownloadWait,
VirtualMachineManager.ExecuteInSequence.value());
-
- String errMsg = null;
+ boolean usingBackendSnapshot =
usingBackendSnapshotFor(snapshotInfo);
+ boolean computeClusterSupportsResign =
_clusterDao.computeClusterSupportsResign(hostVO.getClusterId());
- CopyCmdAnswer copyCmdAnswer = null;
+ if (usingBackendSnapshot && !computeClusterSupportsResign) {
+ throw new CloudRuntimeException("Unable to locate an
applicable host with which to perform a resignature operation");
+ }
try {
- _volumeService.grantAccess(snapshotInfo, hostVO, srcDataStore);
+ if (usingBackendSnapshot) {
+ createVolumeFromSnapshot(hostVO, snapshotInfo, true);
+ }
- Map<String, String> srcDetails =
getSnapshotDetails(_storagePoolDao.findById(srcDataStore.getId()),
snapshotInfo);
+ DataStore srcDataStore = snapshotInfo.getDataStore();
- copyCommand.setOptions(srcDetails);
+ String value =
_configDao.getValue(Config.PrimaryStorageDownloadWait.toString());
+ int primaryStorageDownloadWait = NumbersUtil.parseInt(value,
Integer.parseInt(Config.PrimaryStorageDownloadWait.getDefaultValue()));
+ CopyCommand copyCommand = new
CopyCommand(snapshotInfo.getTO(), templateInfo.getTO(),
primaryStorageDownloadWait, VirtualMachineManager.ExecuteInSequence.value());
+
+ String errMsg = null;
+
+ CopyCmdAnswer copyCmdAnswer = null;
- copyCmdAnswer = (CopyCmdAnswer)_agentMgr.send(hostVO.getId(),
copyCommand);
- }
- catch (Exception ex) {
- throw new CloudRuntimeException(ex.getMessage());
- }
- finally {
try {
- _volumeService.revokeAccess(snapshotInfo, hostVO,
srcDataStore);
+ // If we are using a back-end snapshot, then we should
still have access to it from the hosts in the cluster that hostVO is in
+ // (because we passed in true as the third parameter to
createVolumeFromSnapshot above).
+ if (usingBackendSnapshot == false) {
+ _volumeService.grantAccess(snapshotInfo, hostVO,
srcDataStore);
+ }
+
+ Map<String, String> srcDetails =
getSnapshotDetails(snapshotInfo);
+
+ copyCommand.setOptions(srcDetails);
+
+ copyCmdAnswer =
(CopyCmdAnswer)_agentMgr.send(hostVO.getId(), copyCommand);
}
catch (Exception ex) {
- s_logger.debug(ex.getMessage(), ex);
+ throw new CloudRuntimeException("Failed to create template
from snapshot : " + ex.getMessage());
}
+ finally {
+ try {
+ _volumeService.revokeAccess(snapshotInfo, hostVO,
srcDataStore);
+ }
+ catch (Exception ex) {
+ s_logger.warn(ex.getMessage(), ex);
+ }
- if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
- if (copyCmdAnswer != null && copyCmdAnswer.getDetails() !=
null && !copyCmdAnswer.getDetails().isEmpty()) {
- errMsg = copyCmdAnswer.getDetails();
+ if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
+ if (copyCmdAnswer != null &&
!StringUtils.isEmpty(copyCmdAnswer.getDetails())) {
+ errMsg = copyCmdAnswer.getDetails();
+ }
+ else {
+ errMsg = "Unable to create template from snapshot";
+ }
}
- else {
- errMsg = "Unable to perform host-side operation";
+
+ try {
+ if (StringUtils.isEmpty(errMsg)) {
+
snapshotInfo.processEvent(Event.OperationSuccessed);
+ }
+ else {
+ snapshotInfo.processEvent(Event.OperationFailed);
+ }
+ }
+ catch (Exception ex) {
+ s_logger.warn(ex.getMessage(), ex);
}
}
- try {
- if (errMsg == null) {
- snapshotInfo.processEvent(Event.OperationSuccessed);
+ CopyCommandResult result = new CopyCommandResult(null,
copyCmdAnswer);
+
+ result.setResult(errMsg);
+
+ callback.complete(result);
+ }
+ finally {
+ if (usingBackendSnapshot) {
+ deleteVolumeFromSnapshot(snapshotInfo);
+ }
+ }
+ }
+
+ /**
+ * Clones a template present on the storage to a new volume and
resignatures it.
+ *
+ * @param srcData source template
+ * @param destData destination ROOT volume
+ * @param callback for async
+ */
+ private void
handleCreateVolumeFromTemplateBothOnStorageSystem(DataObject srcData,
DataObject destData, AsyncCompletionCallback<CopyCommandResult> callback) {
+ Preconditions.checkArgument(srcData != null, "Passing 'null' to
srcData of handleCreateVolumeFromTemplateBothOnStorageSystem is not
supported.");
+ Preconditions.checkArgument(destData != null, "Passing 'null' to
destData of handleCreateVolumeFromTemplateBothOnStorageSystem is not
supported.");
+
+ CopyCmdAnswer copyCmdAnswer = null;
+ String errMsg = null;
+
+ TemplateInfo templateInfo = (TemplateInfo)srcData;
+ VolumeInfo volumeInfo = (VolumeInfo)destData;
+
+ HostVO hostVO = getHost(volumeInfo.getDataCenterId(), true);
+
+ if (hostVO == null) {
+ throw new CloudRuntimeException("Unable to locate a host
capable of resigning in the zone with the following ID: " +
volumeInfo.getDataCenterId());
+ }
+
+ boolean computeClusterSupportsResign =
_clusterDao.computeClusterSupportsResign(hostVO.getClusterId());
+
+ if (!computeClusterSupportsResign) {
+ throw new CloudRuntimeException("Unable to locate an
applicable host with which to perform a resignature operation");
+ }
+
+ try {
+ VolumeDetailVO volumeDetail = new
VolumeDetailVO(volumeInfo.getId(),
+ "cloneOfTemplate",
+ String.valueOf(templateInfo.getId()),
+ false);
+
+ volumeDetail = _volumeDetailsDao.persist(volumeDetail);
+
+ AsyncCallFuture<VolumeApiResult> future =
_volumeService.createVolumeAsync(volumeInfo, volumeInfo.getDataStore());
+ VolumeApiResult result = future.get();
+
+ if (volumeDetail != null) {
+ _volumeDetailsDao.remove(volumeDetail.getId());
+ }
+
+ if (result.isFailed()) {
+ s_logger.warn("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());
+
+ copyCmdAnswer = performResignature(volumeInfo, hostVO);
+
+ if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
+ if (copyCmdAnswer != null &&
!StringUtils.isEmpty(copyCmdAnswer.getDetails())) {
+ throw new
CloudRuntimeException(copyCmdAnswer.getDetails());
}
else {
- snapshotInfo.processEvent(Event.OperationFailed);
+ throw new CloudRuntimeException("Unable to create a
volume from a template");
}
}
- catch (Exception ex) {
- s_logger.debug(ex.getMessage(), ex);
+ } catch (Exception ex) {
+ try {
+
volumeInfo.getDataStore().getDriver().deleteAsync(volumeInfo.getDataStore(),
volumeInfo, null);
+ } catch (Exception e) {
+ s_logger.warn("Exception while deleting volume on the
backend " + e.getMessage());
}
+
+ throw new CloudRuntimeException("Create volume from template
(ID = " + templateInfo.getId() + ") failed " + ex.getMessage());
}
CopyCommandResult result = new CopyCommandResult(null,
copyCmdAnswer);
result.setResult(errMsg);
callback.complete(result);
-
- return null;
}
- private Void
handleCreateVolumeFromSnapshotBothOnStorageSystem(SnapshotInfo snapshotInfo,
VolumeInfo volumeInfo, AsyncCompletionCallback<CopyCommandResult> callback) {
+ private void
handleCreateVolumeFromSnapshotBothOnStorageSystem(SnapshotInfo snapshotInfo,
VolumeInfo volumeInfo, AsyncCompletionCallback<CopyCommandResult> callback) {
--- End diff --
this method has become 75 lines. let's split it (and the likes)
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