| // 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; |
| |
| import com.cloud.agent.api.Command; |
| import com.cloud.agent.api.to.DataObjectType; |
| import com.cloud.agent.api.to.VirtualMachineTO; |
| import com.cloud.host.HostVO; |
| import com.cloud.host.dao.HostDao; |
| import com.cloud.hypervisor.Hypervisor.HypervisorType; |
| import com.cloud.storage.DataStoreRole; |
| import com.cloud.storage.GuestOSHypervisorVO; |
| import com.cloud.storage.GuestOSVO; |
| import com.cloud.storage.dao.GuestOSDao; |
| import com.cloud.storage.dao.GuestOSHypervisorDao; |
| import com.cloud.utils.Pair; |
| import com.cloud.utils.exception.CloudRuntimeException; |
| import com.cloud.vm.VirtualMachine; |
| import com.cloud.vm.VirtualMachineProfile; |
| import org.apache.cloudstack.storage.command.CopyCommand; |
| import org.apache.cloudstack.storage.command.StorageSubSystemCommand; |
| import org.apache.log4j.Logger; |
| |
| import javax.inject.Inject; |
| import java.math.BigDecimal; |
| import java.math.RoundingMode; |
| import java.util.Map; |
| |
| public class KVMGuru extends HypervisorGuruBase implements HypervisorGuru { |
| @Inject |
| GuestOSDao _guestOsDao; |
| @Inject |
| GuestOSHypervisorDao _guestOsHypervisorDao; |
| @Inject |
| HostDao _hostDao; |
| |
| public static final Logger s_logger = Logger.getLogger(KVMGuru.class); |
| |
| @Override |
| public HypervisorType getHypervisorType() { |
| return HypervisorType.KVM; |
| } |
| |
| protected KVMGuru() { |
| super(); |
| } |
| |
| /** |
| * Retrieve host max CPU speed |
| */ |
| protected double getHostCPUSpeed(HostVO host) { |
| return host.getSpeed(); |
| } |
| |
| protected double getVmSpeed(VirtualMachineTO to) { |
| return to.getMaxSpeed() != null ? to.getMaxSpeed() : to.getSpeed(); |
| } |
| |
| /** |
| * Set VM CPU quota percentage with respect to host CPU on 'to' if CPU limit option is set |
| * @param to vm to |
| * @param vmProfile vm profile |
| */ |
| protected void setVmQuotaPercentage(VirtualMachineTO to, VirtualMachineProfile vmProfile) { |
| if (to.getLimitCpuUse()) { |
| VirtualMachine vm = vmProfile.getVirtualMachine(); |
| HostVO host = _hostDao.findById(vm.getHostId()); |
| if (host == null) { |
| throw new CloudRuntimeException("Host with id: " + vm.getHostId() + " not found"); |
| } |
| s_logger.debug("Limiting CPU usage for VM: " + vm.getUuid() + " on host: " + host.getUuid()); |
| double hostMaxSpeed = getHostCPUSpeed(host); |
| double maxSpeed = getVmSpeed(to); |
| try { |
| BigDecimal percent = new BigDecimal(maxSpeed / hostMaxSpeed); |
| percent = percent.setScale(2, RoundingMode.HALF_DOWN); |
| if (percent.compareTo(new BigDecimal(1)) == 1) { |
| s_logger.debug("VM " + vm.getUuid() + " CPU MHz exceeded host " + host.getUuid() + " CPU MHz, limiting VM CPU to the host maximum"); |
| percent = new BigDecimal(1); |
| } |
| to.setCpuQuotaPercentage(percent.doubleValue()); |
| s_logger.debug("Host: " + host.getUuid() + " max CPU speed = " + hostMaxSpeed + "MHz, VM: " + vm.getUuid() + |
| "max CPU speed = " + maxSpeed + "MHz. Setting CPU quota percentage as: " + percent.doubleValue()); |
| } catch (NumberFormatException e) { |
| s_logger.error("Error calculating VM: " + vm.getUuid() + " quota percentage, it wll not be set. Error: " + e.getMessage(), e); |
| } |
| } |
| } |
| |
| @Override |
| |
| public VirtualMachineTO implement(VirtualMachineProfile vm) { |
| VirtualMachineTO to = toVirtualMachineTO(vm); |
| setVmQuotaPercentage(to, vm); |
| |
| // Determine the VM's OS description |
| GuestOSVO guestOS = _guestOsDao.findByIdIncludingRemoved(vm.getVirtualMachine().getGuestOSId()); |
| to.setOs(guestOS.getDisplayName()); |
| HostVO host = _hostDao.findById(vm.getVirtualMachine().getHostId()); |
| GuestOSHypervisorVO guestOsMapping = null; |
| if (host != null) { |
| guestOsMapping = _guestOsHypervisorDao.findByOsIdAndHypervisor(guestOS.getId(), getHypervisorType().toString(), host.getHypervisorVersion()); |
| } |
| if (guestOsMapping == null || host == null) { |
| to.setPlatformEmulator("Other"); |
| } else { |
| to.setPlatformEmulator(guestOsMapping.getGuestOsName()); |
| } |
| |
| return to; |
| } |
| |
| @Override |
| public Pair<Boolean, Long> getCommandHostDelegation(long hostId, Command cmd) { |
| if (cmd instanceof CopyCommand) { |
| CopyCommand c = (CopyCommand) cmd; |
| boolean inSeq = true; |
| if (c.getSrcTO().getObjectType() == DataObjectType.SNAPSHOT || |
| c.getDestTO().getObjectType() == DataObjectType.SNAPSHOT) { |
| inSeq = false; |
| } else if (c.getDestTO().getDataStore().getRole() == DataStoreRole.Image || |
| c.getDestTO().getDataStore().getRole() == DataStoreRole.ImageCache) { |
| inSeq = false; |
| } |
| c.setExecuteInSequence(inSeq); |
| } |
| if (cmd instanceof StorageSubSystemCommand) { |
| StorageSubSystemCommand c = (StorageSubSystemCommand)cmd; |
| c.setExecuteInSequence(false); |
| } |
| return new Pair<Boolean, Long>(false, new Long(hostId)); |
| } |
| |
| @Override |
| public boolean trackVmHostChange() { |
| return false; |
| } |
| |
| @Override |
| public Map<String, String> getClusterSettings(long vmId) { |
| return null; |
| } |
| |
| } |