Package org.libvirt

Class StorageVol

java.lang.Object

org.libvirt.StorageVol

public class StorageVol
extends java.lang.Object

An acutal storage bucket.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StorageVol.DownloadFlags
static class	StorageVol.ResizeFlags
static class	StorageVol.Type
static class	StorageVol.UploadFlags

Field Summary

Fields

Modifier and Type	Field	Description
protected Connect	virConnect	The VirConnect Object that represents the Hypervisor of this Domain

Method Summary

Modifier and Type	Method	Description
void	delete(int flags)	Delete the storage volume from the pool
void	download(Stream stream, long offset, long length, int flags)	Download the content of the volume as a stream
protected void	finalize()
int	free()	Release the storage volume handle.
Connect	getConnect()	Provides the connection object associated with a storage volume.
StorageVolInfo	getInfo()	Fetches volatile information about the storage volume such as its current allocation
java.lang.String	getKey()	Fetch the storage volume key.
java.lang.String	getName()	Fetch the storage volume name.
java.lang.String	getPath()	Fetch the storage volume path.
java.lang.String	getXMLDesc(int flags)	Fetch an XML document describing all aspects of this storage volume
int	resize(long capacity, int flags)	Resize a volume
StoragePool	storagePoolLookupByVolume()	Fetch a storage pool which contains this volume
void	upload(Stream stream, long offset, long length, int flags)	Upload new content to the volume from a stream
int	wipe()	Ensure data previously on a volume is not accessible to future reads

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

virConnect

protected Connect virConnect

The VirConnect Object that represents the Hypervisor of this Domain

Method Detail

delete

public void delete(int flags)
            throws LibvirtException

Delete the storage volume from the pool

Parameters:

flags - future flags, use 0 for now

Throws:

LibvirtException

finalize

protected void finalize()
                 throws LibvirtException

Overrides:

finalize in class java.lang.Object

Throws:

LibvirtException

free

public int free()
         throws LibvirtException

Release the storage volume handle. The underlying storage volume contains to exist

Returns:

number of references left (>= 0)

Throws:

LibvirtException

getConnect

public Connect getConnect()

Provides the connection object associated with a storage volume. The reference counter on the connection is not increased by this call.

Returns:

the Connect object

getInfo

public StorageVolInfo getInfo()
                       throws LibvirtException

Fetches volatile information about the storage volume such as its current allocation

Returns:

StorageVolInfo object

Throws:

LibvirtException

getKey

public java.lang.String getKey()
                        throws LibvirtException

Fetch the storage volume key. This is globally unique, so the same volume will have the same key no matter what host it is accessed from

Returns:

the key

Throws:

LibvirtException

getName

public java.lang.String getName()
                         throws LibvirtException

Fetch the storage volume name. This is unique within the scope of a pool

Returns:

the name

Throws:

LibvirtException

getPath

public java.lang.String getPath()
                         throws LibvirtException

Fetch the storage volume path. Depending on the pool configuration this is either persistent across hosts, or dynamically assigned at pool startup. Consult pool documentation for information on getting the persistent naming

Returns:

the storage volume path

Throws:

LibvirtException

getXMLDesc

public java.lang.String getXMLDesc(int flags)
                            throws LibvirtException

Fetch an XML document describing all aspects of this storage volume

Parameters:

flags - flags for XML generation (unused, pass 0)

Returns:

the XML document

Throws:

LibvirtException

storagePoolLookupByVolume

public StoragePool storagePoolLookupByVolume()
                                      throws LibvirtException

Fetch a storage pool which contains this volume

Returns:

StoragePool object, or null if not found.

Throws:

LibvirtException

wipe

public int wipe()
         throws LibvirtException

Ensure data previously on a volume is not accessible to future reads

Returns:

ignore (always 0)

Throws:

LibvirtException

See Also:

Libvirt Documentation

resize

public int resize(long capacity,
                  int flags)
           throws LibvirtException

Resize a volume

Parameters:

capacity - new capacity for volume

flags - flags for resizing, see libvirt API for exact flags

Returns:

ignore (always 0)

Throws:

LibvirtException

See Also:

Libvirt Documentation

upload

public void upload(Stream stream,
                   long offset,
                   long length,
                   int flags)
            throws LibvirtException

Upload new content to the volume from a stream

Parameters:

stream - stream to use as input

offset - position to start writing to

length - limit on amount of data to upload

flags - see StorageVol.UploadFlags

Throws:

LibvirtException

See Also:

Libvirt Documentation

download

public void download(Stream stream,
                     long offset,
                     long length,
                     int flags)
              throws LibvirtException

Download the content of the volume as a stream

Parameters:

stream - stream to use as output

offset - position to start reading from

length - limit on amount of data to download

flags - see StorageVol.DownloadFlags

Throws:

LibvirtException

See Also:

Libvirt Documentation