use of com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk in project cloudstack by apache.
the class LibvirtCreatePrivateTemplateFromSnapshotCommandWrapper method execute.
@Override
public Answer execute(final CreatePrivateTemplateFromSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
final String templateFolder = command.getAccountId() + File.separator + command.getNewTemplateId();
final String templateInstallFolder = "template/tmpl/" + templateFolder;
final String tmplName = libvirtUtilitiesHelper.generateUUIDName();
final String tmplFileName = tmplName + ".qcow2";
KVMStoragePool secondaryPool = null;
KVMStoragePool snapshotPool = null;
final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
try {
String snapshotPath = command.getSnapshotUuid();
final int index = snapshotPath.lastIndexOf("/");
snapshotPath = snapshotPath.substring(0, index);
snapshotPool = storagePoolMgr.getStoragePoolByURI(command.getSecondaryStorageUrl() + snapshotPath);
secondaryPool = storagePoolMgr.getStoragePoolByURI(command.getSecondaryStorageUrl());
final KVMPhysicalDisk snapshot = snapshotPool.getPhysicalDisk(command.getSnapshotName());
final String templatePath = secondaryPool.getLocalPath() + File.separator + templateInstallFolder;
final StorageLayer storage = libvirtComputingResource.getStorage();
storage.mkdirs(templatePath);
final String tmplPath = templateInstallFolder + File.separator + tmplFileName;
final String createTmplPath = libvirtComputingResource.createTmplPath();
final int cmdsTimeout = libvirtComputingResource.getCmdsTimeout();
final Script scriptCommand = new Script(createTmplPath, cmdsTimeout, s_logger);
scriptCommand.add("-t", templatePath);
scriptCommand.add("-n", tmplFileName);
scriptCommand.add("-f", snapshot.getPath());
scriptCommand.execute();
final Processor qcow2Processor = libvirtUtilitiesHelper.buildQCOW2Processor(storage);
final FormatInfo info = qcow2Processor.process(templatePath, null, tmplName);
final TemplateLocation loc = libvirtUtilitiesHelper.buildTemplateLocation(storage, templatePath);
loc.create(1, true, tmplName);
loc.addFormat(info);
loc.save();
return new CreatePrivateTemplateAnswer(command, true, "", tmplPath, info.virtualSize, info.size, tmplName, info.format);
} catch (final ConfigurationException e) {
return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
} catch (final InternalErrorException e) {
return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
} catch (final IOException e) {
return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
} catch (final CloudRuntimeException e) {
return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
} finally {
if (secondaryPool != null) {
storagePoolMgr.deleteStoragePool(secondaryPool.getType(), secondaryPool.getUuid());
}
if (snapshotPool != null) {
storagePoolMgr.deleteStoragePool(snapshotPool.getType(), snapshotPool.getUuid());
}
}
}
use of com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk 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: " + toHumanReadableSize(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);
}
use of com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk in project cloudstack by apache.
the class LibvirtCreateVolumeFromSnapshotCommandWrapper method execute.
@Override
public Answer execute(final CreateVolumeFromSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
try {
String snapshotPath = command.getSnapshotUuid();
final int index = snapshotPath.lastIndexOf("/");
snapshotPath = snapshotPath.substring(0, index);
final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
final KVMStoragePool secondaryPool = storagePoolMgr.getStoragePoolByURI(command.getSecondaryStorageUrl() + snapshotPath);
final KVMPhysicalDisk snapshot = secondaryPool.getPhysicalDisk(command.getSnapshotName());
final String primaryUuid = command.getPrimaryStoragePoolNameLabel();
final StorageFilerTO pool = command.getPool();
final KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(pool.getType(), primaryUuid);
final String volUuid = UUID.randomUUID().toString();
final KVMPhysicalDisk disk = storagePoolMgr.copyPhysicalDisk(snapshot, volUuid, primaryPool, 0);
if (disk == null) {
throw new NullPointerException("Disk was not successfully copied to the new storage.");
}
return new CreateVolumeFromSnapshotAnswer(command, true, "", disk.getName());
} catch (final CloudRuntimeException e) {
return new CreateVolumeFromSnapshotAnswer(command, false, e.toString(), null);
} catch (final Exception e) {
return new CreateVolumeFromSnapshotAnswer(command, false, e.toString(), null);
}
}
use of com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk in project cloudstack by apache.
the class LibvirtManageSnapshotCommandWrapper method execute.
@Override
public Answer execute(final ManageSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
final String snapshotName = command.getSnapshotName();
final String snapshotPath = command.getSnapshotPath();
final String vmName = command.getVmName();
try {
final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName);
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 KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
final StorageFilerTO pool = command.getPool();
final KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(pool.getType(), pool.getUuid());
final KVMPhysicalDisk disk = primaryPool.getPhysicalDisk(command.getVolumePath());
if (state == DomainState.VIR_DOMAIN_RUNNING && !primaryPool.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);
if (command.getCommandSwitch().equalsIgnoreCase(ManageSnapshotCommand.CREATE_SNAPSHOT)) {
vm.snapshotCreateXML(snapshot);
} else {
final DomainSnapshot snap = vm.snapshotLookupByName(snapshotName);
snap.delete(0);
}
/*
* 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 {
/**
* 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());
if (command.getCommandSwitch().equalsIgnoreCase(ManageSnapshotCommand.CREATE_SNAPSHOT)) {
s_logger.debug("Attempting to create RBD snapshot " + disk.getName() + "@" + snapshotName);
image.snapCreate(snapshotName);
} else {
s_logger.debug("Attempting to remove RBD snapshot " + disk.getName() + "@" + snapshotName);
image.snapRemove(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 int cmdsTimeout = libvirtComputingResource.getCmdsTimeout();
final String manageSnapshotPath = libvirtComputingResource.manageSnapshotPath();
final Script scriptCommand = new Script(manageSnapshotPath, cmdsTimeout, s_logger);
if (command.getCommandSwitch().equalsIgnoreCase(ManageSnapshotCommand.CREATE_SNAPSHOT)) {
scriptCommand.add("-c", disk.getPath());
} else {
scriptCommand.add("-d", snapshotPath);
}
scriptCommand.add("-n", snapshotName);
final String result = scriptCommand.execute();
if (result != null) {
s_logger.debug("Failed to manage snapshot: " + result);
return new ManageSnapshotAnswer(command, false, "Failed to manage snapshot: " + result);
}
}
}
return new ManageSnapshotAnswer(command, command.getSnapshotId(), disk.getPath() + File.separator + snapshotName, true, null);
} catch (final LibvirtException e) {
s_logger.debug("Failed to manage snapshot: " + e.toString());
return new ManageSnapshotAnswer(command, false, "Failed to manage snapshot: " + e.toString());
}
}
use of com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk in project cloudstack by apache.
the class LibvirtRevertSnapshotCommandWrapper method execute.
@Override
public Answer execute(final RevertSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
SnapshotObjectTO snapshot = command.getData();
VolumeObjectTO volume = snapshot.getVolume();
PrimaryDataStoreTO primaryStore = (PrimaryDataStoreTO) volume.getDataStore();
DataStoreTO snapshotImageStore = snapshot.getDataStore();
if (!(snapshotImageStore instanceof NfsTO) && primaryStore.getPoolType() != StoragePoolType.RBD) {
return new Answer(command, false, String.format("Revert snapshot does not support storage pool of type [%s]. Revert snapshot is supported by storage pools of type 'NFS' or 'RBD'", primaryStore.getPoolType()));
}
String volumePath = volume.getPath();
String snapshotPath = null;
String snapshotRelPath = null;
KVMStoragePool secondaryStoragePool = null;
try {
snapshotRelPath = snapshot.getPath();
KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
KVMPhysicalDisk snapshotDisk = storagePoolMgr.getPhysicalDisk(primaryStore.getPoolType(), primaryStore.getUuid(), volumePath);
KVMStoragePool primaryPool = snapshotDisk.getPool();
if (primaryPool.getType() == StoragePoolType.RBD) {
Rados rados = new Rados(primaryPool.getAuthUserName());
rados.confSet(MON_HOST, primaryPool.getSourceHost() + ":" + primaryPool.getSourcePort());
rados.confSet(KEY, primaryPool.getAuthSecret());
rados.confSet(CLIENT_MOUNT_TIMEOUT, RADOS_CONNECTION_TIMEOUT);
rados.connect();
String[] rbdPoolAndVolumeAndSnapshot = snapshotRelPath.split("/");
int snapshotIndex = rbdPoolAndVolumeAndSnapshot.length - 1;
String rbdSnapshotId = rbdPoolAndVolumeAndSnapshot[snapshotIndex];
IoCTX io = rados.ioCtxCreate(primaryPool.getSourceDir());
Rbd rbd = new Rbd(io);
s_logger.debug(String.format("Attempting to rollback RBD snapshot [name:%s], [volumeid:%s], [snapshotid:%s]", snapshot.getName(), volumePath, rbdSnapshotId));
RbdImage image = rbd.open(volumePath);
image.snapRollBack(rbdSnapshotId);
rbd.close(image);
rados.ioCtxDestroy(io);
} else {
NfsTO nfsImageStore = (NfsTO) snapshotImageStore;
String secondaryStoragePoolUrl = nfsImageStore.getUrl();
secondaryStoragePool = storagePoolMgr.getStoragePoolByURI(secondaryStoragePoolUrl);
String ssPmountPath = secondaryStoragePool.getLocalPath();
snapshotPath = ssPmountPath + File.separator + snapshotRelPath;
Script cmd = new Script(libvirtComputingResource.manageSnapshotPath(), libvirtComputingResource.getCmdsTimeout(), s_logger);
cmd.add("-v", snapshotPath);
cmd.add("-n", snapshotDisk.getName());
cmd.add("-p", snapshotDisk.getPath());
String result = cmd.execute();
if (result != null) {
s_logger.debug("Failed to revert snaptshot: " + result);
return new Answer(command, false, result);
}
}
return new Answer(command, true, "RevertSnapshotCommand executes successfully");
} catch (CloudRuntimeException e) {
return new Answer(command, false, e.toString());
} catch (RadosException e) {
s_logger.error("Failed to connect to Rados pool while trying to revert snapshot. Exception: ", e);
return new Answer(command, false, e.toString());
} catch (RbdException e) {
s_logger.error("Failed to connect to revert snapshot due to RBD exception: ", e);
return new Answer(command, false, e.toString());
}
}
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