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CLOUDSTACK-8302 - Cleanup snapshot on KVM with RBD

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Snapshot removing implemented on RBD.
1. On management side: when created new shanpshot we checking if our primary storage is RBD,
then do not remove record from cloud.snapshot_store_ref with link to Ceph
image via 'install_path' field.
2. On management side: when removing snapshot, also send command to agent 'DeleteCommand'.
3. On agent side: method implemented 'public Answer deleteSnapshot(final DeleteCommand cmd)'
This commit is contained in:
Dmytro Shevchenko 2015-12-12 16:44:09 +02:00
parent d518b619dd
commit 10ae2aff28
3 changed files with 64 additions and 10 deletions
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5
engine/storage/snapshot/pom.xml
View File

@ -37,6 +37,11 @@
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.cloudstack</groupId>
<artifactId>cloud-engine-storage-volume</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
<build>
<plugins>

26
engine/storage/snapshot/src/org/apache/cloudstack/storage/snapshot/XenserverSnapshotStrategy.java
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@ -36,6 +36,7 @@ import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
import org.apache.cloudstack.storage.command.CreateObjectAnswer;
import org.apache.cloudstack.storage.datastore.db.SnapshotDataStoreDao;
import org.apache.cloudstack.storage.datastore.db.SnapshotDataStoreVO;
import org.apache.cloudstack.storage.datastore.PrimaryDataStoreImpl;
import org.apache.cloudstack.storage.to.SnapshotObjectTO;
import com.cloud.exception.InvalidParameterValueException;
@ -53,6 +54,7 @@ import com.cloud.storage.dao.SnapshotDao;
import com.cloud.storage.dao.VolumeDao;
import com.cloud.storage.snapshot.SnapshotManager;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.Storage.StoragePoolType;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.db.DB;
import com.cloud.utils.exception.CloudRuntimeException;
@ -263,6 +265,10 @@ public class XenserverSnapshotStrategy extends SnapshotStrategyBase {
//snapshot is deleted on backup storage, need to delete it on primary storage
SnapshotDataStoreVO snapshotOnPrimary = snapshotStoreDao.findBySnapshot(snapshotId, DataStoreRole.Primary);
if (snapshotOnPrimary != null) {
SnapshotInfo snapshotOnPrimaryInfo = snapshotDataFactory.getSnapshot(snapshotId, DataStoreRole.Primary);
if (((PrimaryDataStoreImpl)snapshotOnPrimaryInfo.getDataStore()).getPoolType() == StoragePoolType.RBD) {
snapshotSvr.deleteSnapshot(snapshotOnPrimaryInfo);
}
snapshotOnPrimary.setState(State.Destroyed);
snapshotStoreDao.update(snapshotOnPrimary.getId(), snapshotOnPrimary);
}
@ -371,15 +377,17 @@ public class XenserverSnapshotStrategy extends SnapshotStrategyBase {
try {
SnapshotInfo parent = snapshot.getParent();
if (backupedSnapshot != null && parent != null) {
Long parentSnapshotId = parent.getId();
while (parentSnapshotId != null && parentSnapshotId != 0L) {
SnapshotDataStoreVO snapshotDataStoreVO = snapshotStoreDao.findByStoreSnapshot(primaryStore.getRole(), primaryStore.getId(), parentSnapshotId);
if (snapshotDataStoreVO != null) {
parentSnapshotId = snapshotDataStoreVO.getParentSnapshotId();
snapshotStoreDao.remove(snapshotDataStoreVO.getId());
} else {
parentSnapshotId = null;
if (backupedSnapshot != null && parent != null && primaryStore instanceof PrimaryDataStoreImpl) {
if (((PrimaryDataStoreImpl)primaryStore).getPoolType() != StoragePoolType.RBD) {
Long parentSnapshotId = parent.getId();
while (parentSnapshotId != null && parentSnapshotId != 0L) {
SnapshotDataStoreVO snapshotDataStoreVO = snapshotStoreDao.findByStoreSnapshot(primaryStore.getRole(), primaryStore.getId(), parentSnapshotId);
if (snapshotDataStoreVO != null) {
parentSnapshotId = snapshotDataStoreVO.getParentSnapshotId();
snapshotStoreDao.remove(snapshotDataStoreVO.getId());
} else {
parentSnapshotId = null;
}
}
}
SnapshotDataStoreVO snapshotDataStoreVO = snapshotStoreDao.findByStoreSnapshot(primaryStore.getRole(), primaryStore.getId(), snapshot.getId());

43
plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/storage/KVMStorageProcessor.java
View File

@ -1274,7 +1274,48 @@ public class KVMStorageProcessor implements StorageProcessor {
@Override
public Answer deleteSnapshot(final DeleteCommand cmd) {
return new Answer(cmd);
String snap_full_name = "";
try {
SnapshotObjectTO snapshotTO = (SnapshotObjectTO) cmd.getData();
PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) snapshotTO.getDataStore();
VolumeObjectTO volume = snapshotTO.getVolume();
KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(primaryStore.getPoolType(), primaryStore.getUuid());
KVMPhysicalDisk disk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), primaryStore.getUuid(), volume.getPath());
String snapshotFullPath = snapshotTO.getPath();
String snapshotName = snapshotFullPath.substring(snapshotFullPath.lastIndexOf("/") + 1);
snap_full_name = disk.getName() + "@" + snapshotName;
if (primaryPool.getType() == StoragePoolType.RBD) {
Rados r = new Rados(primaryPool.getAuthUserName());
r.confSet("mon_host", primaryPool.getSourceHost() + ":" + primaryPool.getSourcePort());
r.confSet("key", primaryPool.getAuthSecret());
r.confSet("client_mount_timeout", "30");
r.connect();
s_logger.debug("Succesfully connected to Ceph cluster at " + r.confGet("mon_host"));
IoCTX io = r.ioCtxCreate(primaryPool.getSourceDir());
Rbd rbd = new Rbd(io);
RbdImage image = rbd.open(disk.getName());
try {
s_logger.info("Attempting to remove RBD snapshot " + snap_full_name);
if (image.snapIsProtected(snapshotName)) {
s_logger.debug("Unprotecting RBD snapshot " + snap_full_name);
image.snapUnprotect(snapshotName);
}
image.snapRemove(snapshotName);
s_logger.info("Snapshot " + snap_full_name + " successfully removed from " +
primaryPool.getType().toString() + " pool.");
} finally {
rbd.close(image);
r.ioCtxDestroy(io);
}
} else {
s_logger.warn("Operation not implemented for storage pool type of " + primaryPool.getType().toString());
throw new InternalErrorException("Operation not implemented for storage pool type of " + primaryPool.getType().toString());
}
return new Answer(cmd, true, "Snapshot " + snap_full_name + " removed successfully.");
} catch (Exception e) {
s_logger.error(e.getMessage());
return new Answer(cmd, false, "Failed to remove snapshot " + snap_full_name);
}
}
@Override