| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| |
| package com.cloud.hypervisor.kvm.resource.wrapper; |
| |
| import java.io.File; |
| |
| import org.apache.cloudstack.storage.command.RevertSnapshotCommand; |
| import org.apache.cloudstack.storage.to.PrimaryDataStoreTO; |
| import org.apache.cloudstack.storage.to.SnapshotObjectTO; |
| import org.apache.cloudstack.storage.to.VolumeObjectTO; |
| import org.apache.log4j.Logger; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.to.DataStoreTO; |
| import com.cloud.agent.api.to.NfsTO; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk; |
| import com.cloud.hypervisor.kvm.storage.KVMStoragePool; |
| import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.cloud.storage.Storage.StoragePoolType; |
| import com.cloud.utils.exception.CloudRuntimeException; |
| import com.cloud.utils.script.Script; |
| |
| @ResourceWrapper(handles = RevertSnapshotCommand.class) |
| public final class LibvirtRevertSnapshotCommandWrapper extends CommandWrapper<RevertSnapshotCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtRevertSnapshotCommandWrapper.class); |
| |
| @Override |
| public Answer execute(final RevertSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) { |
| SnapshotObjectTO snapshot = command.getData(); |
| VolumeObjectTO volume = snapshot.getVolume(); |
| PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) volume.getDataStore(); |
| DataStoreTO snapshotImageStore = snapshot.getDataStore(); |
| if (!(snapshotImageStore instanceof NfsTO)) { |
| return new Answer(command, false, "revert snapshot on object storage is not implemented yet"); |
| } |
| NfsTO nfsImageStore = (NfsTO) snapshotImageStore; |
| |
| String secondaryStoragePoolUrl = nfsImageStore.getUrl(); |
| |
| String volumePath = volume.getPath(); |
| String snapshotPath = null; |
| String snapshotRelPath = null; |
| KVMStoragePool secondaryStoragePool = null; |
| try { |
| final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr(); |
| secondaryStoragePool = storagePoolMgr.getStoragePoolByURI(secondaryStoragePoolUrl); |
| String ssPmountPath = secondaryStoragePool.getLocalPath(); |
| snapshotRelPath = snapshot.getPath(); |
| snapshotPath = ssPmountPath + File.separator + snapshotRelPath; |
| |
| KVMPhysicalDisk snapshotDisk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), |
| primaryStore.getUuid(), volumePath); |
| KVMStoragePool primaryPool = snapshotDisk.getPool(); |
| |
| if (primaryPool.getType() == StoragePoolType.RBD) { |
| return new Answer(command, false, "revert snapshot to RBD is not implemented yet"); |
| } else { |
| Script cmd = new Script(libvirtComputingResource.manageSnapshotPath(), libvirtComputingResource.getCmdsTimeout(), s_logger); |
| cmd.add("-v", snapshotPath); |
| cmd.add("-n", snapshotDisk.getName()); |
| cmd.add("-p", snapshotDisk.getPath()); |
| String result = cmd.execute(); |
| if (result != null) { |
| s_logger.debug("Failed to revert snaptshot: " + result); |
| return new Answer(command, false, result); |
| } |
| } |
| |
| return new Answer(command, true, "RevertSnapshotCommand executes successfully"); |
| } catch (CloudRuntimeException e) { |
| return new Answer(command, false, e.toString()); |
| } |
| } |
| } |