org.apache.hadoop.hdfs.server.datanode.fsdataset
Interface FsVolumeSpi

public interface FsVolumeSpi

This is an interface for the underlying volume.

Method Summary

long	getAvailable()
String	getBasePath()
String[]	getBlockPoolList()
File	getFinalizedDir(String bpid)
String	getPath(String bpid)
String	getStorageID()
StorageType	getStorageType()

Method Detail

getStorageID

String getStorageID()

Returns:

the StorageUuid of the volume

getBlockPoolList

String[] getBlockPoolList()

Returns:

a list of block pools.

getAvailable

long getAvailable()
                  throws IOException

Returns:

the available storage space in bytes.

Throws:

IOException

getBasePath

String getBasePath()

Returns:

the base path to the volume

getPath

String getPath(String bpid)
               throws IOException

Returns:

the path to the volume

Throws:

IOException

getFinalizedDir

File getFinalizedDir(String bpid)
                     throws IOException

Returns:

the directory for the finalized blocks in the block pool.

Throws:

IOException

getStorageType

StorageType getStorageType()