| // |
| // 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 com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.PrepareForMigrationAnswer; |
| import com.cloud.agent.api.PrepareForMigrationCommand; |
| import com.cloud.agent.api.to.DiskTO; |
| import com.cloud.agent.api.to.NicTO; |
| import com.cloud.agent.api.to.VirtualMachineTO; |
| import com.cloud.exception.InternalErrorException; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.cloud.storage.Volume; |
| import org.apache.log4j.Logger; |
| import org.libvirt.Connect; |
| import org.libvirt.LibvirtException; |
| |
| import java.net.URISyntaxException; |
| |
| @ResourceWrapper(handles = PrepareForMigrationCommand.class) |
| public final class LibvirtPrepareForMigrationCommandWrapper extends CommandWrapper<PrepareForMigrationCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtPrepareForMigrationCommandWrapper.class); |
| |
| @Override |
| public Answer execute(final PrepareForMigrationCommand command, final LibvirtComputingResource libvirtComputingResource) { |
| final VirtualMachineTO vm = command.getVirtualMachine(); |
| |
| if (command.isRollback()) { |
| return handleRollback(command, libvirtComputingResource); |
| } |
| |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug("Preparing host for migrating " + vm); |
| } |
| |
| final NicTO[] nics = vm.getNics(); |
| |
| boolean skipDisconnect = false; |
| |
| final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr(); |
| try { |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper(); |
| |
| final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vm.getName()); |
| for (final NicTO nic : nics) { |
| libvirtComputingResource.getVifDriver(nic.getType(), nic.getName()).plug(nic, null, "", null); |
| } |
| |
| /* setup disks, e.g for iso */ |
| final DiskTO[] volumes = vm.getDisks(); |
| for (final DiskTO volume : volumes) { |
| if (volume.getType() == Volume.Type.ISO) { |
| libvirtComputingResource.getVolumePath(conn, volume); |
| } |
| } |
| |
| skipDisconnect = true; |
| |
| if (!storagePoolMgr.connectPhysicalDisksViaVmSpec(vm)) { |
| return new PrepareForMigrationAnswer(command, "failed to connect physical disks to host"); |
| } |
| |
| return new PrepareForMigrationAnswer(command); |
| } catch (final LibvirtException e) { |
| return new PrepareForMigrationAnswer(command, e.toString()); |
| } catch (final InternalErrorException e) { |
| return new PrepareForMigrationAnswer(command, e.toString()); |
| } catch (final URISyntaxException e) { |
| return new PrepareForMigrationAnswer(command, e.toString()); |
| } finally { |
| if (!skipDisconnect) { |
| storagePoolMgr.disconnectPhysicalDisksViaVmSpec(vm); |
| } |
| } |
| } |
| |
| private Answer handleRollback(PrepareForMigrationCommand command, LibvirtComputingResource libvirtComputingResource) { |
| KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr(); |
| VirtualMachineTO vmTO = command.getVirtualMachine(); |
| |
| if (!storagePoolMgr.disconnectPhysicalDisksViaVmSpec(vmTO)) { |
| return new PrepareForMigrationAnswer(command, "failed to disconnect physical disks from host"); |
| } |
| |
| return new PrepareForMigrationAnswer(command); |
| } |
| } |