| // |
| // 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 org.apache.cloudstack.storage.to.PrimaryDataStoreTO; |
| import org.apache.cloudstack.storage.to.VolumeObjectTO; |
| import org.apache.log4j.Logger; |
| import org.libvirt.Connect; |
| import org.libvirt.Domain; |
| import org.libvirt.DomainSnapshot; |
| import org.libvirt.LibvirtException; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.DeleteVMSnapshotAnswer; |
| import com.cloud.agent.api.DeleteVMSnapshotCommand; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk; |
| import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.cloud.storage.Volume; |
| import com.cloud.storage.Storage.ImageFormat; |
| import com.cloud.utils.script.Script; |
| |
| @ResourceWrapper(handles = DeleteVMSnapshotCommand.class) |
| public final class LibvirtDeleteVMSnapshotCommandWrapper extends CommandWrapper<DeleteVMSnapshotCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtDeleteVMSnapshotCommandWrapper.class); |
| |
| @Override |
| public Answer execute(final DeleteVMSnapshotCommand cmd, final LibvirtComputingResource libvirtComputingResource) { |
| String vmName = cmd.getVmName(); |
| |
| final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr(); |
| Domain dm = null; |
| DomainSnapshot snapshot = null; |
| try { |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper(); |
| Connect conn = libvirtUtilitiesHelper.getConnection(); |
| dm = libvirtComputingResource.getDomain(conn, vmName); |
| |
| snapshot = dm.snapshotLookupByName(cmd.getTarget().getSnapshotName()); |
| |
| snapshot.delete(0); // only remove this snapshot, not children |
| |
| return new DeleteVMSnapshotAnswer(cmd, cmd.getVolumeTOs()); |
| } catch (LibvirtException e) { |
| String msg = " Delete VM snapshot failed due to " + e.toString(); |
| |
| if (dm == null) { |
| s_logger.debug("Can not find running vm: " + vmName + ", now we are trying to delete the vm snapshot using qemu-img if the format of root volume is QCOW2"); |
| VolumeObjectTO rootVolume = null; |
| for (VolumeObjectTO volume: cmd.getVolumeTOs()) { |
| if (volume.getVolumeType() == Volume.Type.ROOT) { |
| rootVolume = volume; |
| break; |
| } |
| } |
| if (rootVolume != null && ImageFormat.QCOW2.equals(rootVolume.getFormat())) { |
| PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) rootVolume.getDataStore(); |
| KVMPhysicalDisk rootDisk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), |
| primaryStore.getUuid(), rootVolume.getPath()); |
| String qemu_img_snapshot = Script.runSimpleBashScript("qemu-img snapshot -l " + rootDisk.getPath() + " | tail -n +3 | awk -F ' ' '{print $2}' | grep ^" + cmd.getTarget().getSnapshotName() + "$"); |
| if (qemu_img_snapshot == null) { |
| s_logger.info("Cannot find snapshot " + cmd.getTarget().getSnapshotName() + " in file " + rootDisk.getPath() + ", return true"); |
| return new DeleteVMSnapshotAnswer(cmd, cmd.getVolumeTOs()); |
| } |
| int result = Script.runSimpleBashScriptForExitValue("qemu-img snapshot -d " + cmd.getTarget().getSnapshotName() + " " + rootDisk.getPath()); |
| if (result != 0) { |
| return new DeleteVMSnapshotAnswer(cmd, false, |
| "Delete VM Snapshot Failed due to can not remove snapshot from image file " + rootDisk.getPath() + " : " + result); |
| } else { |
| return new DeleteVMSnapshotAnswer(cmd, cmd.getVolumeTOs()); |
| } |
| } |
| } else if (snapshot == null) { |
| s_logger.debug("Can not find vm snapshot " + cmd.getTarget().getSnapshotName() + " on vm: " + vmName + ", return true"); |
| return new DeleteVMSnapshotAnswer(cmd, cmd.getVolumeTOs()); |
| } |
| |
| s_logger.warn(msg, e); |
| return new DeleteVMSnapshotAnswer(cmd, false, msg); |
| } finally { |
| if (dm != null) { |
| try { |
| dm.free(); |
| } catch (LibvirtException l) { |
| s_logger.trace("Ignoring libvirt error.", l); |
| }; |
| } |
| } |
| } |
| } |