Github user mike-tutkowski commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1403#discussion_r59110681
--- Diff:
engine/storage/datamotion/src/org/apache/cloudstack/storage/motion/StorageSystemDataMotionStrategy.java
---
@@ -255,99 +448,153 @@ private Void
handleCreateVolumeFromSnapshotBothOnStorageSystem(SnapshotInfo snap
VolumeApiResult result = future.get();
+ if (volumeDetail != null) {
+ _volumeDetailsDao.remove(volumeDetail.getId());
+ }
+
if (result.isFailed()) {
s_logger.debug("Failed to create a volume: " +
result.getResult());
throw new CloudRuntimeException(result.getResult());
}
- }
- catch (Exception ex) {
- throw new CloudRuntimeException(ex.getMessage());
- }
- volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(),
volumeInfo.getDataStore());
+ volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(),
volumeInfo.getDataStore());
- volumeInfo.processEvent(Event.MigrationRequested);
+ volumeInfo.processEvent(Event.MigrationRequested);
- volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(),
volumeInfo.getDataStore());
+ volumeInfo = _volumeDataFactory.getVolume(volumeInfo.getId(),
volumeInfo.getDataStore());
- HostVO hostVO = getHost(snapshotInfo.getDataStore().getId());
+ if (useCloning) {
+ copyCmdAnswer = performResignature(volumeInfo, hostVO);
+ }
+ else {
+ // asking for a XenServer host here so we don't always
prefer to use XenServer hosts that support resigning
+ // even when we don't need those hosts to do this kind of
copy work
+ hostVO = getHost(snapshotInfo.getDataCenterId(), false);
- String value =
_configDao.getValue(Config.PrimaryStorageDownloadWait.toString());
- int primaryStorageDownloadWait = NumbersUtil.parseInt(value,
Integer.parseInt(Config.PrimaryStorageDownloadWait.getDefaultValue()));
- CopyCommand copyCommand = new CopyCommand(snapshotInfo.getTO(),
volumeInfo.getTO(), primaryStorageDownloadWait,
VirtualMachineManager.ExecuteInSequence.value());
+ copyCmdAnswer = performCopyOfVdi(volumeInfo, snapshotInfo,
hostVO);
+ }
- CopyCmdAnswer copyCmdAnswer = null;
+ if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
+ if (copyCmdAnswer != null &&
!StringUtils.isEmpty(copyCmdAnswer.getDetails())) {
+ errMsg = copyCmdAnswer.getDetails();
+ }
+ else {
+ errMsg = "Unable to perform host-side operation";
+ }
+ }
+ }
+ catch (Exception ex) {
+ errMsg = ex.getMessage() != null ? ex.getMessage() : "Copy
operation failed";
+ }
- try {
- _volumeService.grantAccess(snapshotInfo, hostVO,
snapshotInfo.getDataStore());
- _volumeService.grantAccess(volumeInfo, hostVO,
volumeInfo.getDataStore());
+ CopyCommandResult result = new CopyCommandResult(null,
copyCmdAnswer);
- Map<String, String> srcDetails =
getSnapshotDetails(_storagePoolDao.findById(snapshotInfo.getDataStore().getId()),
snapshotInfo);
+ result.setResult(errMsg);
- copyCommand.setOptions(srcDetails);
+ callback.complete(result);
+ }
- Map<String, String> destDetails = getVolumeDetails(volumeInfo);
+ /**
+ * If the underlying storage system is making use of read-only
snapshots, this gives the storage system the opportunity to
+ * create a volume from the snapshot so that we can copy the VHD file
that should be inside of the snapshot to secondary storage.
+ *
+ * The resultant volume must be writable because we need to resign the
SR and the VDI that should be inside of it before we copy
+ * the VHD file to secondary storage.
+ *
+ * If the storage system is using writable snapshots, then nothing
need be done by that storage system here because we can just
+ * resign the SR and the VDI that should be inside of the snapshot
before copying the VHD file to secondary storage.
+ */
+ private void createVolumeFromSnapshot(HostVO hostVO, SnapshotInfo
snapshotInfo, boolean keepGrantedAccess) {
+ SnapshotDetailsVO snapshotDetails =
handleSnapshotDetails(snapshotInfo.getId(), "tempVolume", "create");
- copyCommand.setOptions2(destDetails);
-
- copyCmdAnswer = (CopyCmdAnswer)_agentMgr.send(hostVO.getId(),
copyCommand);
- }
- catch (Exception ex) {
- throw new CloudRuntimeException(ex.getMessage());
+ try {
+
snapshotInfo.getDataStore().getDriver().createAsync(snapshotInfo.getDataStore(),
snapshotInfo, null);
}
finally {
- try {
- _volumeService.revokeAccess(snapshotInfo, hostVO,
snapshotInfo.getDataStore());
- }
- catch (Exception ex) {
- s_logger.debug(ex.getMessage(), ex);
- }
-
- try {
- _volumeService.revokeAccess(volumeInfo, hostVO,
volumeInfo.getDataStore());
- }
- catch (Exception ex) {
- s_logger.debug(ex.getMessage(), ex);
- }
+ _snapshotDetailsDao.remove(snapshotDetails.getId());
}
- String errMsg = null;
+ CopyCmdAnswer copyCmdAnswer = performResignature(snapshotInfo,
hostVO, keepGrantedAccess);
if (copyCmdAnswer == null || !copyCmdAnswer.getResult()) {
- if (copyCmdAnswer != null && copyCmdAnswer.getDetails() !=
null && !copyCmdAnswer.getDetails().isEmpty()) {
- errMsg = copyCmdAnswer.getDetails();
+ if (copyCmdAnswer != null &&
!StringUtils.isEmpty(copyCmdAnswer.getDetails())) {
+ throw new
CloudRuntimeException(copyCmdAnswer.getDetails());
}
else {
- errMsg = "Unable to perform host-side operation";
+ throw new CloudRuntimeException("Unable to perform
host-side operation");
}
}
+ }
- CopyCommandResult result = new CopyCommandResult(null,
copyCmdAnswer);
+ /**
+ * If the underlying storage system needed to create a volume from a
snapshot for createVolumeFromSnapshot(HostVO, SnapshotInfo), then
+ * this is its opportunity to delete that temporary volume and restore
properties in snapshot_details to the way they were before the
+ * invocation of createVolumeFromSnapshot(HostVO, SnapshotInfo).
+ */
+ private void deleteVolumeFromSnapshot(SnapshotInfo snapshotInfo) {
+ SnapshotDetailsVO snapshotDetails =
handleSnapshotDetails(snapshotInfo.getId(), "tempVolume", "delete");
- result.setResult(errMsg);
+ try {
+
snapshotInfo.getDataStore().getDriver().createAsync(snapshotInfo.getDataStore(),
snapshotInfo, null);
+ }
+ finally {
+ _snapshotDetailsDao.remove(snapshotDetails.getId());
+ }
+ }
- callback.complete(result);
+ private SnapshotDetailsVO handleSnapshotDetails(long csSnapshotId,
String name, String value) {
+ _snapshotDetailsDao.removeDetail(csSnapshotId, name);
- return null;
+ SnapshotDetailsVO snapshotDetails = new
SnapshotDetailsVO(csSnapshotId, name, value, false);
+
+ return _snapshotDetailsDao.persist(snapshotDetails);
}
- private Map<String, String> getSnapshotDetails(StoragePoolVO
storagePoolVO, SnapshotInfo snapshotInfo) {
- Map<String, String> details = new HashMap<String, String>();
+ private boolean canStorageSystemCreateVolumeFromVolume(SnapshotInfo
snapshotInfo) {
+ boolean supportsCloningVolumeFromVolume = false;
- details.put(DiskTO.STORAGE_HOST, storagePoolVO.getHostAddress());
- details.put(DiskTO.STORAGE_PORT,
String.valueOf(storagePoolVO.getPort()));
+ DataStore dataStore =
_dataStoreMgr.getDataStore(snapshotInfo.getDataStore().getId(),
DataStoreRole.Primary);
- long snapshotId = snapshotInfo.getId();
+ Map<String, String> mapCapabilities =
dataStore.getDriver().getCapabilities();
- details.put(DiskTO.IQN, getProperty(snapshotId, DiskTO.IQN));
+ if (mapCapabilities != null) {
+ String value =
mapCapabilities.get(DataStoreCapabilities.CAN_CREATE_VOLUME_FROM_VOLUME.toString());
- details.put(DiskTO.CHAP_INITIATOR_USERNAME,
getProperty(snapshotId, DiskTO.CHAP_INITIATOR_USERNAME));
- details.put(DiskTO.CHAP_INITIATOR_SECRET, getProperty(snapshotId,
DiskTO.CHAP_INITIATOR_SECRET));
- details.put(DiskTO.CHAP_TARGET_USERNAME, getProperty(snapshotId,
DiskTO.CHAP_TARGET_USERNAME));
- details.put(DiskTO.CHAP_TARGET_SECRET, getProperty(snapshotId,
DiskTO.CHAP_TARGET_SECRET));
+ supportsCloningVolumeFromVolume = new Boolean(value);
+ }
- return details;
+ return supportsCloningVolumeFromVolume;
+ }
+
+ private boolean computeClusterSupportsResign(long clusterId) {
+ List<HostVO> hosts = _hostDao.findByClusterId(clusterId);
+
+ if (hosts == null) {
+ return false;
+ }
+
+ for (HostVO host : hosts) {
+ if (host == null) {
+ return false;
+ }
+
+ DetailVO hostDetail = _hostDetailsDao.findDetail(host.getId(),
"supportsResign");
+
+ if (hostDetail == null) {
+ return false;
+ }
+
+ String value = hostDetail.getValue();
+
+ Boolean booleanValue = Boolean.valueOf(value);
+
+ if (booleanValue == false) {
+ return false;
+ }
+ }
--- End diff --
Are you thinking a new SQL statement like this? By the way, it looks like
the editor pulls out the star that is inside of the parenthesis of my count
functions.
Select count(*) = (Select count(*) From cloud.host Where cluster_id = 1)
From cloud.host_details
Where name = "supportsResign"
and value = "true"
and host_id in (Select id From cloud.host Where cluster_id = 1)
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
