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

Example 66 with Connect

use of org.libvirt.Connect in project CloudStack-archive by CloudStack-extras.

the class LibvirtComputingResource method execute.

protected GetVmStatsAnswer execute(GetVmStatsCommand cmd) {
    List<String> vmNames = cmd.getVmNames();
    try {
        HashMap<String, VmStatsEntry> vmStatsNameMap = new HashMap<String, VmStatsEntry>();
        Connect conn = LibvirtConnection.getConnection();
        for (String vmName : vmNames) {
            VmStatsEntry statEntry = getVmStat(conn, vmName);
            if (statEntry == null) {
                continue;
            }
            vmStatsNameMap.put(vmName, statEntry);
        }
        return new GetVmStatsAnswer(cmd, vmStatsNameMap);
    } catch (LibvirtException e) {
        s_logger.debug("Can't get vm stats: " + e.toString());
        return new GetVmStatsAnswer(cmd, null);
    }
}

Example 67 with Connect

use of org.libvirt.Connect in project CloudStack-archive by CloudStack-extras.

the class LibvirtComputingResource method execute.

protected ManageSnapshotAnswer execute(final ManageSnapshotCommand cmd) {
    String snapshotName = cmd.getSnapshotName();
    String snapshotPath = cmd.getSnapshotPath();
    String vmName = cmd.getVmName();
    try {
        Connect conn = LibvirtConnection.getConnection();
        DomainInfo.DomainState state = null;
        Domain vm = null;
        if (vmName != null) {
            try {
                vm = getDomain(conn, cmd.getVmName());
                state = vm.getInfo().state;
            } catch (LibvirtException e) {
            }
        }
        KVMStoragePool primaryPool = _storagePoolMgr.getStoragePool(cmd.getPool().getUuid());
        KVMPhysicalDisk disk = primaryPool.getPhysicalDisk(cmd.getVolumePath());
        if (state == DomainInfo.DomainState.VIR_DOMAIN_RUNNING && !primaryPool.isExternalSnapshot()) {
            String vmUuid = vm.getUUIDString();
            Object[] args = new Object[] { snapshotName, vmUuid };
            String snapshot = SnapshotXML.format(args);
            s_logger.debug(snapshot);
            if (cmd.getCommandSwitch().equalsIgnoreCase(ManageSnapshotCommand.CREATE_SNAPSHOT)) {
                vm.snapshotCreateXML(snapshot);
            } else {
                DomainSnapshot snap = vm.snapshotLookupByName(snapshotName);
                snap.delete(0);
            }
            /*
				 * libvirt on RHEL6 doesn't handle resume event emitted from
				 * qemu
				 */
            vm = getDomain(conn, cmd.getVmName());
            state = vm.getInfo().state;
            if (state == DomainInfo.DomainState.VIR_DOMAIN_PAUSED) {
                vm.resume();
            }
        } else {
            /* VM is not running, create a snapshot by ourself */
            final Script command = new Script(_manageSnapshotPath, _cmdsTimeout, s_logger);
            if (cmd.getCommandSwitch().equalsIgnoreCase(ManageSnapshotCommand.CREATE_SNAPSHOT)) {
                command.add("-c", disk.getPath());
            } else {
                command.add("-d", snapshotPath);
            }
            command.add("-n", snapshotName);
            String result = command.execute();
            if (result != null) {
                s_logger.debug("Failed to manage snapshot: " + result);
                return new ManageSnapshotAnswer(cmd, false, "Failed to manage snapshot: " + result);
            }
        }
        return new ManageSnapshotAnswer(cmd, cmd.getSnapshotId(), disk.getPath() + File.separator + snapshotName, true, null);
    } catch (LibvirtException e) {
        s_logger.debug("Failed to manage snapshot: " + e.toString());
        return new ManageSnapshotAnswer(cmd, false, "Failed to manage snapshot: " + e.toString());
    }
}

Example 68 with Connect

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

the class KVMStorageProcessor method createSnapshot.

@Override
public Answer createSnapshot(final CreateObjectCommand cmd) {
    final SnapshotObjectTO snapshotTO = (SnapshotObjectTO) cmd.getData();
    final PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) snapshotTO.getDataStore();
    final VolumeObjectTO volume = snapshotTO.getVolume();
    final String snapshotName = UUID.randomUUID().toString();
    final String vmName = volume.getVmName();
    try {
        final Connect conn = LibvirtConnection.getConnectionByVmName(vmName);
        DomainInfo.DomainState state = null;
        Domain vm = null;
        if (vmName != null) {
            try {
                vm = resource.getDomain(conn, vmName);
                state = vm.getInfo().state;
            } catch (final LibvirtException e) {
                s_logger.trace("Ignoring libvirt error.", e);
            }
        }
        final KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(primaryStore.getPoolType(), primaryStore.getUuid());
        final KVMPhysicalDisk disk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), primaryStore.getUuid(), volume.getPath());
        if (state == DomainInfo.DomainState.VIR_DOMAIN_RUNNING && !primaryPool.isExternalSnapshot()) {
            final String vmUuid = vm.getUUIDString();
            final Object[] args = new Object[] { snapshotName, vmUuid };
            final String snapshot = SnapshotXML.format(args);
            final long start = System.currentTimeMillis();
            vm.snapshotCreateXML(snapshot);
            final long total = (System.currentTimeMillis() - start) / 1000;
            s_logger.debug("snapshot takes " + total + " seconds to finish");
            /*
                 * libvirt on RHEL6 doesn't handle resume event emitted from
                 * qemu
                 */
            vm = resource.getDomain(conn, vmName);
            state = vm.getInfo().state;
            if (state == DomainInfo.DomainState.VIR_DOMAIN_PAUSED) {
                vm.resume();
            }
        } else {
            /**
                 * For RBD we can't use libvirt to do our snapshotting or any Bash scripts.
                 * libvirt also wants to store the memory contents of the Virtual Machine,
                 * but that's not possible with RBD since there is no way to store the memory
                 * contents in RBD.
                 *
                 * So we rely on the Java bindings for RBD to create our snapshot
                 *
                 * This snapshot might not be 100% consistent due to writes still being in the
                 * memory of the Virtual Machine, but if the VM runs a kernel which supports
                 * barriers properly (>2.6.32) this won't be any different then pulling the power
                 * cord out of a running machine.
                 */
            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(disk.getName());
                    s_logger.debug("Attempting to create RBD snapshot " + disk.getName() + "@" + snapshotName);
                    image.snapCreate(snapshotName);
                    rbd.close(image);
                    r.ioCtxDestroy(io);
                } catch (final Exception e) {
                    s_logger.error("A RBD snapshot operation on " + disk.getName() + " failed. The error was: " + e.getMessage());
                }
            } else {
                /* VM is not running, create a snapshot by ourself */
                final Script command = new Script(_manageSnapshotPath, _cmdsTimeout, s_logger);
                command.add("-c", disk.getPath());
                command.add("-n", snapshotName);
                final String result = command.execute();
                if (result != null) {
                    s_logger.debug("Failed to manage snapshot: " + result);
                    return new CreateObjectAnswer("Failed to manage snapshot: " + result);
                }
            }
        }
        final SnapshotObjectTO newSnapshot = new SnapshotObjectTO();
        // NOTE: sort of hack, we'd better just put snapshtoName
        newSnapshot.setPath(disk.getPath() + File.separator + snapshotName);
        return new CreateObjectAnswer(newSnapshot);
    } catch (final LibvirtException e) {
        s_logger.debug("Failed to manage snapshot: ", e);
        return new CreateObjectAnswer("Failed to manage snapshot: " + e.toString());
    }
}

Example 69 with Connect

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

the class KVMStorageProcessor method backupSnapshot.

@Override
public Answer backupSnapshot(final CopyCommand cmd) {
    final DataTO srcData = cmd.getSrcTO();
    final DataTO destData = cmd.getDestTO();
    final SnapshotObjectTO snapshot = (SnapshotObjectTO) srcData;
    final PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) snapshot.getDataStore();
    final SnapshotObjectTO destSnapshot = (SnapshotObjectTO) destData;
    final DataStoreTO imageStore = destData.getDataStore();
    if (!(imageStore instanceof NfsTO)) {
        return backupSnapshotForObjectStore(cmd);
    }
    final NfsTO nfsImageStore = (NfsTO) imageStore;
    final String secondaryStoragePoolUrl = nfsImageStore.getUrl();
    // NOTE: snapshot name is encoded in snapshot path
    final int index = snapshot.getPath().lastIndexOf("/");
    // -1 means the snapshot is created from existing vm snapshot
    final boolean isCreatedFromVmSnapshot = (index == -1) ? true : false;
    final String snapshotName = snapshot.getPath().substring(index + 1);
    String descName = snapshotName;
    final String volumePath = snapshot.getVolume().getPath();
    String snapshotDestPath = null;
    String snapshotRelPath = null;
    final String vmName = snapshot.getVmName();
    KVMStoragePool secondaryStoragePool = null;
    Connect conn = null;
    KVMPhysicalDisk snapshotDisk = null;
    KVMStoragePool primaryPool = null;
    try {
        conn = LibvirtConnection.getConnectionByVmName(vmName);
        secondaryStoragePool = storagePoolMgr.getStoragePoolByURI(secondaryStoragePoolUrl);
        final String ssPmountPath = secondaryStoragePool.getLocalPath();
        snapshotRelPath = destSnapshot.getPath();
        snapshotDestPath = ssPmountPath + File.separator + snapshotRelPath;
        snapshotDisk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), primaryStore.getUuid(), volumePath);
        primaryPool = snapshotDisk.getPool();
        long size = 0;
        /**
             * Since Ceph version Dumpling (0.67.X) librbd / Qemu supports converting RBD
             * snapshots to RAW/QCOW2 files directly.
             *
             * This reduces the amount of time and storage it takes to back up a snapshot dramatically
             */
        if (primaryPool.getType() == StoragePoolType.RBD) {
            final String rbdSnapshot = snapshotDisk.getPath() + "@" + snapshotName;
            final String snapshotFile = snapshotDestPath + "/" + snapshotName;
            try {
                s_logger.debug("Attempting to backup RBD snapshot " + rbdSnapshot);
                final File snapDir = new File(snapshotDestPath);
                s_logger.debug("Attempting to create " + snapDir.getAbsolutePath() + " recursively for snapshot storage");
                FileUtils.forceMkdir(snapDir);
                final QemuImgFile srcFile = new QemuImgFile(KVMPhysicalDisk.RBDStringBuilder(primaryPool.getSourceHost(), primaryPool.getSourcePort(), primaryPool.getAuthUserName(), primaryPool.getAuthSecret(), rbdSnapshot));
                srcFile.setFormat(snapshotDisk.getFormat());
                final QemuImgFile destFile = new QemuImgFile(snapshotFile);
                destFile.setFormat(PhysicalDiskFormat.QCOW2);
                s_logger.debug("Backing up RBD snapshot " + rbdSnapshot + " to " + snapshotFile);
                final QemuImg q = new QemuImg(cmd.getWaitInMillSeconds());
                q.convert(srcFile, destFile);
                final File snapFile = new File(snapshotFile);
                if (snapFile.exists()) {
                    size = snapFile.length();
                }
                s_logger.debug("Finished backing up RBD snapshot " + rbdSnapshot + " to " + snapshotFile + " Snapshot size: " + size);
            } catch (final FileNotFoundException e) {
                s_logger.error("Failed to open " + snapshotDestPath + ". The error was: " + e.getMessage());
                return new CopyCmdAnswer(e.toString());
            } catch (final IOException e) {
                s_logger.error("Failed to create " + snapshotDestPath + ". The error was: " + e.getMessage());
                return new CopyCmdAnswer(e.toString());
            } catch (final QemuImgException e) {
                s_logger.error("Failed to backup the RBD snapshot from " + rbdSnapshot + " to " + snapshotFile + " the error was: " + e.getMessage());
                return new CopyCmdAnswer(e.toString());
            }
        } else {
            final Script command = new Script(_manageSnapshotPath, cmd.getWaitInMillSeconds(), s_logger);
            command.add("-b", snapshotDisk.getPath());
            command.add("-n", snapshotName);
            command.add("-p", snapshotDestPath);
            if (isCreatedFromVmSnapshot) {
                descName = UUID.randomUUID().toString();
            }
            command.add("-t", descName);
            final String result = command.execute();
            if (result != null) {
                s_logger.debug("Failed to backup snaptshot: " + result);
                return new CopyCmdAnswer(result);
            }
            final File snapFile = new File(snapshotDestPath + "/" + descName);
            if (snapFile.exists()) {
                size = snapFile.length();
            }
        }
        final SnapshotObjectTO newSnapshot = new SnapshotObjectTO();
        newSnapshot.setPath(snapshotRelPath + File.separator + descName);
        newSnapshot.setPhysicalSize(size);
        return new CopyCmdAnswer(newSnapshot);
    } catch (final LibvirtException e) {
        s_logger.debug("Failed to backup snapshot: ", e);
        return new CopyCmdAnswer(e.toString());
    } catch (final CloudRuntimeException e) {
        s_logger.debug("Failed to backup snapshot: ", e);
        return new CopyCmdAnswer(e.toString());
    } finally {
        if (isCreatedFromVmSnapshot) {
            s_logger.debug("Ignoring removal of vm snapshot on primary as this snapshot is created from vm snapshot");
        } else {
            try {
                /* Delete the snapshot on primary */
                DomainInfo.DomainState state = null;
                Domain vm = null;
                if (vmName != null) {
                    try {
                        vm = resource.getDomain(conn, vmName);
                        state = vm.getInfo().state;
                    } catch (final LibvirtException e) {
                        s_logger.trace("Ignoring libvirt error.", e);
                    }
                }
                final KVMStoragePool primaryStorage = storagePoolMgr.getStoragePool(primaryStore.getPoolType(), primaryStore.getUuid());
                if (state == DomainInfo.DomainState.VIR_DOMAIN_RUNNING && !primaryStorage.isExternalSnapshot()) {
                    final DomainSnapshot snap = vm.snapshotLookupByName(snapshotName);
                    snap.delete(0);
                    /*
                         * libvirt on RHEL6 doesn't handle resume event emitted from
                         * qemu
                         */
                    vm = resource.getDomain(conn, vmName);
                    state = vm.getInfo().state;
                    if (state == DomainInfo.DomainState.VIR_DOMAIN_PAUSED) {
                        vm.resume();
                    }
                } else {
                    if (primaryPool.getType() != StoragePoolType.RBD) {
                        final Script command = new Script(_manageSnapshotPath, _cmdsTimeout, s_logger);
                        command.add("-d", snapshotDisk.getPath());
                        command.add("-n", snapshotName);
                        final String result = command.execute();
                        if (result != null) {
                            s_logger.debug("Failed to delete snapshot on primary: " + result);
                        // return new CopyCmdAnswer("Failed to backup snapshot: " + result);
                        }
                    }
                }
            } catch (final Exception ex) {
                s_logger.debug("Failed to delete snapshots on primary", ex);
            }
        }
        try {
            if (secondaryStoragePool != null) {
                secondaryStoragePool.delete();
            }
        } catch (final Exception ex) {
            s_logger.debug("Failed to delete secondary storage", ex);
        }
    }
}

Example 70 with Connect

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

the class KVMStorageProcessor method dettachIso.

@Override
public Answer dettachIso(final DettachCommand cmd) {
    final DiskTO disk = cmd.getDisk();
    final TemplateObjectTO isoTO = (TemplateObjectTO) disk.getData();
    final DataStoreTO store = isoTO.getDataStore();
    if (!(store instanceof NfsTO)) {
        return new AttachAnswer("unsupported protocol");
    }
    final NfsTO nfsStore = (NfsTO) store;
    try {
        final Connect conn = LibvirtConnection.getConnectionByVmName(cmd.getVmName());
        attachOrDetachISO(conn, cmd.getVmName(), nfsStore.getUrl() + File.separator + isoTO.getPath(), false);
    } catch (final LibvirtException e) {
        return new Answer(cmd, false, e.toString());
    } catch (final URISyntaxException e) {
        return new Answer(cmd, false, e.toString());
    } catch (final InternalErrorException e) {
        return new Answer(cmd, false, e.toString());
    }
    return new Answer(cmd);
}