Examples with HostAllocator com.cloud.agent.manager.allocator.HostAllocator used on opensource projects

Example 1 with HostAllocator

use of com.cloud.agent.manager.allocator.HostAllocator in project cloudstack by apache.

the class ManagementServerImpl method listHostsForMigrationOfVM.

@Override
public Ternary<Pair<List<? extends Host>, Integer>, List<? extends Host>, Map<Host, Boolean>> listHostsForMigrationOfVM(final Long vmId, final Long startIndex, final Long pageSize, final String keyword) {
    final Account caller = getCaller();
    if (!_accountMgr.isRootAdmin(caller.getId())) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Caller is not a root admin, permission denied to migrate the VM");
        }
        throw new PermissionDeniedException("No permission to migrate VM, Only Root Admin can migrate a VM!");
    }
    final VMInstanceVO vm = _vmInstanceDao.findById(vmId);
    if (vm == null) {
        final InvalidParameterValueException ex = new InvalidParameterValueException("Unable to find the VM with given id");
        throw ex;
    }
    if (vm.getState() != State.Running) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("VM is not running, cannot migrate the vm" + vm);
        }
        final InvalidParameterValueException ex = new InvalidParameterValueException("VM is not Running, cannot " + "migrate the vm with specified id");
        ex.addProxyObject(vm.getUuid(), "vmId");
        throw ex;
    }
    if (_serviceOfferingDetailsDao.findDetail(vm.getServiceOfferingId(), GPU.Keys.pciDevice.toString()) != null) {
        s_logger.info(" Live Migration of GPU enabled VM : " + vm.getInstanceName() + " is not supported");
        // Return empty list.
        return new Ternary<Pair<List<? extends Host>, Integer>, List<? extends Host>, Map<Host, Boolean>>(new Pair<List<? extends Host>, Integer>(new ArrayList<HostVO>(), new Integer(0)), new ArrayList<Host>(), new HashMap<Host, Boolean>());
    }
    if (!vm.getHypervisorType().equals(HypervisorType.XenServer) && !vm.getHypervisorType().equals(HypervisorType.VMware) && !vm.getHypervisorType().equals(HypervisorType.KVM) && !vm.getHypervisorType().equals(HypervisorType.Ovm) && !vm.getHypervisorType().equals(HypervisorType.Hyperv) && !vm.getHypervisorType().equals(HypervisorType.LXC) && !vm.getHypervisorType().equals(HypervisorType.Simulator) && !vm.getHypervisorType().equals(HypervisorType.Ovm3)) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug(vm + " is not XenServer/VMware/KVM/Ovm/Hyperv/Ovm3, cannot migrate this VM.");
        }
        throw new InvalidParameterValueException("Unsupported Hypervisor Type for VM migration, we support " + "XenServer/VMware/KVM/Ovm/Hyperv/Ovm3 only");
    }
    if (vm.getType().equals(VirtualMachine.Type.User) && vm.getHypervisorType().equals(HypervisorType.LXC)) {
        throw new InvalidParameterValueException("Unsupported Hypervisor Type for User VM migration, we support XenServer/VMware/KVM/Ovm/Hyperv/Ovm3 only");
    }
    final long srcHostId = vm.getHostId();
    final Host srcHost = _hostDao.findById(srcHostId);
    if (srcHost == null) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Unable to find the host with id: " + srcHostId + " of this VM:" + vm);
        }
        final InvalidParameterValueException ex = new InvalidParameterValueException("Unable to find the host (with specified id) of VM with specified id");
        ex.addProxyObject(String.valueOf(srcHostId), "hostId");
        ex.addProxyObject(vm.getUuid(), "vmId");
        throw ex;
    }
    // Check if the vm can be migrated with storage.
    boolean canMigrateWithStorage = false;
    if (vm.getType() == VirtualMachine.Type.User) {
        final HypervisorCapabilitiesVO capabilities = _hypervisorCapabilitiesDao.findByHypervisorTypeAndVersion(srcHost.getHypervisorType(), srcHost.getHypervisorVersion());
        if (capabilities != null) {
            canMigrateWithStorage = capabilities.isStorageMotionSupported();
        }
    }
    // Check if the vm is using any disks on local storage.
    final VirtualMachineProfile vmProfile = new VirtualMachineProfileImpl(vm, null, _offeringDao.findById(vm.getId(), vm.getServiceOfferingId()), null, null);
    final List<VolumeVO> volumes = _volumeDao.findCreatedByInstance(vmProfile.getId());
    boolean usesLocal = false;
    for (final VolumeVO volume : volumes) {
        final DiskOfferingVO diskOffering = _diskOfferingDao.findById(volume.getDiskOfferingId());
        final DiskProfile diskProfile = new DiskProfile(volume, diskOffering, vmProfile.getHypervisorType());
        if (diskProfile.useLocalStorage()) {
            usesLocal = true;
            break;
        }
    }
    if (!canMigrateWithStorage && usesLocal) {
        throw new InvalidParameterValueException("Unsupported operation, VM uses Local storage, cannot migrate");
    }
    final Type hostType = srcHost.getType();
    Pair<List<HostVO>, Integer> allHostsPair = null;
    List<HostVO> allHosts = null;
    final Map<Host, Boolean> requiresStorageMotion = new HashMap<Host, Boolean>();
    DataCenterDeployment plan = null;
    if (canMigrateWithStorage) {
        allHostsPair = searchForServers(startIndex, pageSize, null, hostType, null, srcHost.getDataCenterId(), null, null, null, keyword, null, null, srcHost.getHypervisorType(), srcHost.getHypervisorVersion());
        allHosts = allHostsPair.first();
        allHosts.remove(srcHost);
        for (final VolumeVO volume : volumes) {
            final StoragePool storagePool = _poolDao.findById(volume.getPoolId());
            final Long volClusterId = storagePool.getClusterId();
            for (final Iterator<HostVO> iterator = allHosts.iterator(); iterator.hasNext(); ) {
                final Host host = iterator.next();
                if (volClusterId != null) {
                    if (!host.getClusterId().equals(volClusterId) || usesLocal) {
                        if (hasSuitablePoolsForVolume(volume, host, vmProfile)) {
                            requiresStorageMotion.put(host, true);
                        } else {
                            iterator.remove();
                        }
                    }
                } else {
                    if (storagePool.isManaged()) {
                        if (srcHost.getClusterId() != host.getClusterId()) {
                            requiresStorageMotion.put(host, true);
                        }
                    }
                }
            }
        }
        plan = new DataCenterDeployment(srcHost.getDataCenterId(), null, null, null, null, null);
    } else {
        final Long cluster = srcHost.getClusterId();
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Searching for all hosts in cluster " + cluster + " for migrating VM " + vm);
        }
        allHostsPair = searchForServers(startIndex, pageSize, null, hostType, null, null, null, cluster, null, keyword, null, null, null, null);
        // Filter out the current host.
        allHosts = allHostsPair.first();
        allHosts.remove(srcHost);
        plan = new DataCenterDeployment(srcHost.getDataCenterId(), srcHost.getPodId(), srcHost.getClusterId(), null, null, null);
    }
    final Pair<List<? extends Host>, Integer> otherHosts = new Pair<List<? extends Host>, Integer>(allHosts, new Integer(allHosts.size()));
    List<Host> suitableHosts = new ArrayList<Host>();
    final ExcludeList excludes = new ExcludeList();
    excludes.addHost(srcHostId);
    // call affinitygroup chain
    final long vmGroupCount = _affinityGroupVMMapDao.countAffinityGroupsForVm(vm.getId());
    if (vmGroupCount > 0) {
        for (final AffinityGroupProcessor processor : _affinityProcessors) {
            processor.process(vmProfile, plan, excludes);
        }
    }
    for (final HostAllocator allocator : hostAllocators) {
        if (canMigrateWithStorage) {
            suitableHosts = allocator.allocateTo(vmProfile, plan, Host.Type.Routing, excludes, allHosts, HostAllocator.RETURN_UPTO_ALL, false);
        } else {
            suitableHosts = allocator.allocateTo(vmProfile, plan, Host.Type.Routing, excludes, HostAllocator.RETURN_UPTO_ALL, false);
        }
        if (suitableHosts != null && !suitableHosts.isEmpty()) {
            break;
        }
    }
    if (s_logger.isDebugEnabled()) {
        if (suitableHosts.isEmpty()) {
            s_logger.debug("No suitable hosts found");
        } else {
            s_logger.debug("Hosts having capacity and suitable for migration: " + suitableHosts);
        }
    }
    return new Ternary<Pair<List<? extends Host>, Integer>, List<? extends Host>, Map<Host, Boolean>>(otherHosts, suitableHosts, requiresStorageMotion);
}