| // |
| // 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 java.util.List; |
| import java.util.Map; |
| |
| import com.cloud.agent.api.to.DpdkTO; |
| import com.cloud.hypervisor.kvm.resource.LibvirtKvmAgentHook; |
| import com.cloud.utils.Pair; |
| import com.cloud.utils.script.Script; |
| import com.cloud.utils.ssh.SshHelper; |
| import org.apache.commons.collections.CollectionUtils; |
| import org.apache.commons.collections.MapUtils; |
| import org.libvirt.Connect; |
| import org.libvirt.Domain; |
| import org.libvirt.DomainInfo.DomainState; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.StopAnswer; |
| import com.cloud.agent.api.StopCommand; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef; |
| import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.InterfaceDef; |
| import com.cloud.hypervisor.kvm.resource.VifDriver; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import org.libvirt.LibvirtException; |
| |
| @ResourceWrapper(handles = StopCommand.class) |
| public final class LibvirtStopCommandWrapper extends CommandWrapper<StopCommand, Answer, LibvirtComputingResource> { |
| |
| private static final String CMDLINE_PATH = "/var/cache/cloud/cmdline"; |
| private static final String CMDLINE_BACKUP_PATH = "/var/cache/cloud/cmdline.backup"; |
| |
| @Override |
| public Answer execute(final StopCommand command, final LibvirtComputingResource libvirtComputingResource) { |
| final String vmName = command.getVmName(); |
| final Map<String, Boolean> vlanToPersistenceMap = command.getVlanToPersistenceMap(); |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper(); |
| |
| if (command.checkBeforeCleanup()) { |
| try { |
| final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName); |
| final Domain vm = conn.domainLookupByName(command.getVmName()); |
| if (vm != null && vm.getInfo().state == DomainState.VIR_DOMAIN_RUNNING) { |
| return new StopAnswer(command, "vm is still running on host", false); |
| } |
| } catch (final Exception e) { |
| logger.debug("Failed to get vm status in case of checkboforecleanup is true", e); |
| } |
| } |
| File pemFile = new File(LibvirtComputingResource.SSHPRVKEYPATH); |
| try { |
| if(vmName.startsWith("s-") || vmName.startsWith("v-")){ |
| //move the command line file to backup. |
| logger.debug("backing up the cmdline"); |
| try{ |
| Pair<Boolean, String> ret = SshHelper.sshExecute(command.getControlIp(), 3922, "root", pemFile, null,"cp -f "+CMDLINE_PATH+" "+CMDLINE_BACKUP_PATH); |
| if(!ret.first()){ |
| logger.debug("Failed to backup cmdline file due to "+ret.second()); |
| } |
| } catch (Exception e){ |
| logger.debug("Failed to backup cmdline file due to "+e.getMessage()); |
| } |
| } |
| |
| final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName); |
| |
| final List<DiskDef> disks = libvirtComputingResource.getDisks(conn, vmName); |
| final List<InterfaceDef> ifaces = libvirtComputingResource.getInterfaces(conn, vmName); |
| |
| libvirtComputingResource.destroyNetworkRulesForVM(conn, vmName); |
| final String result = libvirtComputingResource.stopVM(conn, vmName, command.isForceStop()); |
| |
| performAgentStopHook(vmName, libvirtComputingResource); |
| |
| if (result == null) { |
| if (disks != null && disks.size() > 0) { |
| for (final DiskDef disk : disks) { |
| libvirtComputingResource.cleanupDisk(disk); |
| DiskDef.LibvirtDiskEncryptDetails diskEncryptDetails = disk.getLibvirtDiskEncryptDetails(); |
| if (diskEncryptDetails != null) { |
| libvirtComputingResource.removeLibvirtVolumeSecret(conn, diskEncryptDetails.getPassphraseUuid()); |
| } |
| } |
| } |
| else { |
| // When using iSCSI-based managed storage, if the user shuts a VM down from the guest OS (as opposed to doing so from CloudStack), |
| // info needs to be passed to the KVM agent to have it disconnect KVM from the applicable iSCSI volumes. |
| List<Map<String, String>> volumesToDisconnect = command.getVolumesToDisconnect(); |
| |
| if (volumesToDisconnect != null) { |
| for (Map<String, String> volumeToDisconnect : volumesToDisconnect) { |
| libvirtComputingResource.cleanupDisk(volumeToDisconnect); |
| } |
| } |
| } |
| |
| if (CollectionUtils.isEmpty(ifaces)) { |
| Map<String, DpdkTO> dpdkInterfaceMapping = command.getDpdkInterfaceMapping(); |
| if (MapUtils.isNotEmpty(dpdkInterfaceMapping)) { |
| for (DpdkTO to : dpdkInterfaceMapping.values()) { |
| String portToRemove = to.getPort(); |
| String cmd = String.format("ovs-vsctl del-port %s", portToRemove); |
| logger.debug("Removing DPDK port: " + portToRemove); |
| Script.runSimpleBashScript(cmd); |
| } |
| } |
| } else { |
| for (final InterfaceDef iface : ifaces) { |
| String vlanId = libvirtComputingResource.getVlanIdFromBridgeName(iface.getBrName()); |
| // We don't know which "traffic type" is associated with |
| // each interface at this point, so inform all vif drivers |
| for (final VifDriver vifDriver : libvirtComputingResource.getAllVifDrivers()) { |
| vifDriver.unplug(iface, libvirtComputingResource.shouldDeleteBridge(vlanToPersistenceMap, vlanId)); |
| } |
| } |
| } |
| } |
| |
| return new StopAnswer(command, result, true); |
| } catch (final LibvirtException e) { |
| logger.debug("unable to stop VM:"+vmName+" due to"+e.getMessage()); |
| try{ |
| if(vmName.startsWith("s-") || vmName.startsWith("v-")) |
| logger.debug("restoring cmdline file from backup"); |
| Pair<Boolean, String> ret = SshHelper.sshExecute(command.getControlIp(), 3922, "root", pemFile, null, "mv "+CMDLINE_BACKUP_PATH+" "+CMDLINE_PATH); |
| if(!ret.first()){ |
| logger.debug("unable to restore cmdline due to "+ret.second()); |
| } |
| }catch (final Exception ex){ |
| logger.debug("unable to restore cmdline due to:"+ex.getMessage()); |
| } |
| return new StopAnswer(command, e.getMessage(), false); |
| } |
| } |
| |
| private void performAgentStopHook(String vmName, final LibvirtComputingResource libvirtComputingResource) { |
| try { |
| LibvirtKvmAgentHook onStopHook = libvirtComputingResource.getStopHook(); |
| onStopHook.handle(vmName); |
| } catch (Exception e) { |
| logger.warn("Exception occurred when handling LibVirt VM onStop hook: {}", e); |
| } |
| } |
| } |