Examples with Connect org.libvirt.Connect used on opensource projects

Example 86 with Connect

use of org.libvirt.Connect in project cloudstack by apache.

the class LibvirtStartCommandWrapper method execute.

@Override
public Answer execute(final StartCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final VirtualMachineTO vmSpec = command.getVirtualMachine();
    vmSpec.setVncAddr(command.getHostIp());
    final String vmName = vmSpec.getName();
    LibvirtVMDef vm = null;
    DomainState state = DomainState.VIR_DOMAIN_SHUTOFF;
    final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
    final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
    Connect conn = null;
    try {
        vm = libvirtComputingResource.createVMFromSpec(vmSpec);
        conn = libvirtUtilitiesHelper.getConnectionByType(vm.getHvsType());
        Long remainingMem = getFreeMemory(conn, libvirtComputingResource);
        if (remainingMem == null) {
            return new StartAnswer(command, "failed to get free memory");
        } else if (remainingMem < vmSpec.getMinRam()) {
            return new StartAnswer(command, "Not enough memory on the host, remaining: " + remainingMem + ", asking: " + vmSpec.getMinRam());
        }
        final NicTO[] nics = vmSpec.getNics();
        for (final NicTO nic : nics) {
            if (vmSpec.getType() != VirtualMachine.Type.User) {
                nic.setPxeDisable(true);
            }
        }
        libvirtComputingResource.createVbd(conn, vmSpec, vmName, vm);
        if (!storagePoolMgr.connectPhysicalDisksViaVmSpec(vmSpec)) {
            return new StartAnswer(command, "Failed to connect physical disks to host");
        }
        libvirtComputingResource.createVifs(vmSpec, vm);
        s_logger.debug("starting " + vmName + ": " + vm.toString());
        libvirtComputingResource.startVM(conn, vmName, vm.toString());
        for (final NicTO nic : nics) {
            if (nic.isSecurityGroupEnabled() || nic.getIsolationUri() != null && nic.getIsolationUri().getScheme().equalsIgnoreCase(IsolationType.Ec2.toString())) {
                if (vmSpec.getType() != VirtualMachine.Type.User) {
                    libvirtComputingResource.configureDefaultNetworkRulesForSystemVm(conn, vmName);
                    break;
                } else {
                    final List<String> nicSecIps = nic.getNicSecIps();
                    String secIpsStr;
                    final StringBuilder sb = new StringBuilder();
                    if (nicSecIps != null) {
                        for (final String ip : nicSecIps) {
                            sb.append(ip).append(":");
                        }
                        secIpsStr = sb.toString();
                    } else {
                        secIpsStr = "0:";
                    }
                    libvirtComputingResource.defaultNetworkRules(conn, vmName, nic, vmSpec.getId(), secIpsStr);
                }
            }
        }
        // pass cmdline info to system vms
        if (vmSpec.getType() != VirtualMachine.Type.User) {
            //wait and try passCmdLine for 5 minutes at most for CLOUDSTACK-2823
            String controlIp = null;
            for (final NicTO nic : nics) {
                if (nic.getType() == TrafficType.Control) {
                    controlIp = nic.getIp();
                    break;
                }
            }
            for (int count = 0; count < 30; count++) {
                libvirtComputingResource.passCmdLine(vmName, vmSpec.getBootArgs());
                //check router is up?
                final VirtualRoutingResource virtRouterResource = libvirtComputingResource.getVirtRouterResource();
                final boolean result = virtRouterResource.connect(controlIp, 1, 5000);
                if (result) {
                    break;
                }
            }
        }
        state = DomainState.VIR_DOMAIN_RUNNING;
        return new StartAnswer(command);
    } catch (final LibvirtException e) {
        s_logger.warn("LibvirtException ", e);
        if (conn != null) {
            libvirtComputingResource.handleVmStartFailure(conn, vmName, vm);
        }
        return new StartAnswer(command, e.getMessage());
    } catch (final InternalErrorException e) {
        s_logger.warn("InternalErrorException ", e);
        if (conn != null) {
            libvirtComputingResource.handleVmStartFailure(conn, vmName, vm);
        }
        return new StartAnswer(command, e.getMessage());
    } catch (final URISyntaxException e) {
        s_logger.warn("URISyntaxException ", e);
        if (conn != null) {
            libvirtComputingResource.handleVmStartFailure(conn, vmName, vm);
        }
        return new StartAnswer(command, e.getMessage());
    } finally {
        if (state != DomainState.VIR_DOMAIN_RUNNING) {
            storagePoolMgr.disconnectPhysicalDisksViaVmSpec(vmSpec);
        }
    }
}

Example 87 with Connect

use of org.libvirt.Connect in project cloudstack by apache.

the class LibvirtPrepareForMigrationCommandWrapper method execute.

@Override
public Answer execute(final PrepareForMigrationCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final VirtualMachineTO vm = command.getVirtualMachine();
    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()).plug(nic, 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);
        }
    }
}

Example 88 with Connect

use of org.libvirt.Connect in project cloudstack by apache.

the class LibvirtRebootCommandWrapper method execute.

@Override
public Answer execute(final RebootCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
    try {
        final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(command.getVmName());
        final String result = libvirtComputingResource.rebootVM(conn, command.getVmName());
        if (result == null) {
            Integer vncPort = null;
            try {
                vncPort = libvirtComputingResource.getVncPort(conn, command.getVmName());
            } catch (final LibvirtException e) {
                s_logger.trace("Ignoring libvirt error.", e);
            }
            libvirtComputingResource.getRuleLogsForVms();
            return new RebootAnswer(command, null, vncPort);
        } else {
            return new RebootAnswer(command, result, false);
        }
    } catch (final LibvirtException e) {
        return new RebootAnswer(command, e.getMessage(), false);
    }
}

Example 89 with Connect

use of org.libvirt.Connect in project cloudstack by apache.

the class LibvirtNetworkRulesSystemVmCommandWrapper method execute.

@Override
public Answer execute(final NetworkRulesSystemVmCommand command, final LibvirtComputingResource libvirtComputingResource) {
    boolean success = false;
    try {
        final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
        final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(command.getVmName());
        success = libvirtComputingResource.configureDefaultNetworkRulesForSystemVm(conn, command.getVmName());
    } catch (final LibvirtException e) {
        s_logger.trace("Ignoring libvirt error.", e);
    }
    return new Answer(command, success, "");
}

Example 90 with Connect

use of org.libvirt.Connect in project cloudstack by apache.

the class LibvirtBackupSnapshotCommandWrapper method execute.

@Override
public Answer execute(final BackupSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
    final Long dcId = command.getDataCenterId();
    final Long accountId = command.getAccountId();
    final Long volumeId = command.getVolumeId();
    final String secondaryStoragePoolUrl = command.getSecondaryStorageUrl();
    final String snapshotName = command.getSnapshotName();
    String snapshotDestPath = null;
    String snapshotRelPath = null;
    final String vmName = command.getVmName();
    KVMStoragePool secondaryStoragePool = null;
    final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
    try {
        final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
        final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName);
        secondaryStoragePool = storagePoolMgr.getStoragePoolByURI(secondaryStoragePoolUrl);
        final String ssPmountPath = secondaryStoragePool.getLocalPath();
        snapshotRelPath = File.separator + "snapshots" + File.separator + dcId + File.separator + accountId + File.separator + volumeId;
        snapshotDestPath = ssPmountPath + File.separator + "snapshots" + File.separator + dcId + File.separator + accountId + File.separator + volumeId;
        final KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(command.getPool().getType(), command.getPrimaryStoragePoolNameLabel());
        final KVMPhysicalDisk snapshotDisk = primaryPool.getPhysicalDisk(command.getVolumePath());
        final String manageSnapshotPath = libvirtComputingResource.manageSnapshotPath();
        final int cmdsTimeout = libvirtComputingResource.getCmdsTimeout();
        /**
             * RBD snapshots can't be copied using qemu-img, so we have to use
             * the Java bindings for librbd here.
             *
             * These bindings will read the snapshot and write the contents to
             * the secondary storage directly
             *
             * It will stop doing so if the amount of time spend is longer then
             * cmds.timeout
             */
        if (primaryPool.getType() == StoragePoolType.RBD) {
            try {
                final Rados r = new Rados(primaryPool.getAuthUserName());
                r.confSet("mon_host", primaryPool.getSourceHost() + ":" + primaryPool.getSourcePort());
                r.confSet("key", primaryPool.getAuthSecret());
                r.confSet("client_mount_timeout", "30");
                r.connect();
                s_logger.debug("Succesfully connected to Ceph cluster at " + r.confGet("mon_host"));
                final IoCTX io = r.ioCtxCreate(primaryPool.getSourceDir());
                final Rbd rbd = new Rbd(io);
                final RbdImage image = rbd.open(snapshotDisk.getName(), snapshotName);
                final File fh = new File(snapshotDestPath);
                try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(fh))) {
                    final int chunkSize = 4194304;
                    long offset = 0;
                    s_logger.debug("Backuping up RBD snapshot " + snapshotName + " to  " + snapshotDestPath);
                    while (true) {
                        final byte[] buf = new byte[chunkSize];
                        final int bytes = image.read(offset, buf, chunkSize);
                        if (bytes <= 0) {
                            break;
                        }
                        bos.write(buf, 0, bytes);
                        offset += bytes;
                    }
                    s_logger.debug("Completed backing up RBD snapshot " + snapshotName + " to  " + snapshotDestPath + ". Bytes written: " + offset);
                } catch (final IOException ex) {
                    s_logger.error("BackupSnapshotAnswer:Exception:" + ex.getMessage());
                }
                r.ioCtxDestroy(io);
            } catch (final RadosException e) {
                s_logger.error("A RADOS operation failed. The error was: " + e.getMessage());
                return new BackupSnapshotAnswer(command, false, e.toString(), null, true);
            } catch (final RbdException e) {
                s_logger.error("A RBD operation on " + snapshotDisk.getName() + " failed. The error was: " + e.getMessage());
                return new BackupSnapshotAnswer(command, false, e.toString(), null, true);
            }
        } else {
            final Script scriptCommand = new Script(manageSnapshotPath, cmdsTimeout, s_logger);
            scriptCommand.add("-b", snapshotDisk.getPath());
            scriptCommand.add("-n", snapshotName);
            scriptCommand.add("-p", snapshotDestPath);
            scriptCommand.add("-t", snapshotName);
            final String result = scriptCommand.execute();
            if (result != null) {
                s_logger.debug("Failed to backup snaptshot: " + result);
                return new BackupSnapshotAnswer(command, false, result, null, true);
            }
        }
        /* Delete the snapshot on primary */
        DomainState state = null;
        Domain vm = null;
        if (vmName != null) {
            try {
                vm = libvirtComputingResource.getDomain(conn, command.getVmName());
                state = vm.getInfo().state;
            } catch (final LibvirtException e) {
                s_logger.trace("Ignoring libvirt error.", e);
            }
        }
        final KVMStoragePool primaryStorage = storagePoolMgr.getStoragePool(command.getPool().getType(), command.getPool().getUuid());
        if (state == DomainState.VIR_DOMAIN_RUNNING && !primaryStorage.isExternalSnapshot()) {
            final MessageFormat snapshotXML = new MessageFormat("   <domainsnapshot>" + "       <name>{0}</name>" + "          <domain>" + "            <uuid>{1}</uuid>" + "        </domain>" + "    </domainsnapshot>");
            final String vmUuid = vm.getUUIDString();
            final Object[] args = new Object[] { snapshotName, vmUuid };
            final String snapshot = snapshotXML.format(args);
            s_logger.debug(snapshot);
            final DomainSnapshot snap = vm.snapshotLookupByName(snapshotName);
            if (snap != null) {
                snap.delete(0);
            } else {
                throw new CloudRuntimeException("Unable to find vm snapshot with name -" + snapshotName);
            }
            /*
                 * libvirt on RHEL6 doesn't handle resume event emitted from
                 * qemu
                 */
            vm = libvirtComputingResource.getDomain(conn, command.getVmName());
            state = vm.getInfo().state;
            if (state == DomainState.VIR_DOMAIN_PAUSED) {
                vm.resume();
            }
        } else {
            final Script scriptCommand = new Script(manageSnapshotPath, cmdsTimeout, s_logger);
            scriptCommand.add("-d", snapshotDisk.getPath());
            scriptCommand.add("-n", snapshotName);
            final String result = scriptCommand.execute();
            if (result != null) {
                s_logger.debug("Failed to backup snapshot: " + result);
                return new BackupSnapshotAnswer(command, false, "Failed to backup snapshot: " + result, null, true);
            }
        }
    } catch (final LibvirtException e) {
        return new BackupSnapshotAnswer(command, false, e.toString(), null, true);
    } catch (final CloudRuntimeException e) {
        return new BackupSnapshotAnswer(command, false, e.toString(), null, true);
    } finally {
        if (secondaryStoragePool != null) {
            storagePoolMgr.deleteStoragePool(secondaryStoragePool.getType(), secondaryStoragePool.getUuid());
        }
    }
    return new BackupSnapshotAnswer(command, true, null, snapshotRelPath + File.separator + snapshotName, true);
}