hadoopのdatanode新規例外処理

STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = node-128-99/192.168.1.99
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 1.1.2
STARTUP_MSG:   build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.1 -r 1440782; compiled by 'hortonfo' on Thu Jan 31 02:06:43 UTC 2013
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2013-12-06 17:19:20,492 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2013-12-06 17:19:20,508 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2013-12-06 17:19:20,509 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2013-12-06 17:19:20,509 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system started
2013-12-06 17:19:20,670 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2013-12-06 17:19:20,736 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Invalid directory in dfs.data.dir: can not create directory: /opt/dfs/data
2013-12-06 17:19:22,183 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: org.apache.hadoop.util.DiskChecker$DiskErrorException: Invalid value for volsFailed : 1 , Volumes tolerated : 0
        at org.apache.hadoop.hdfs.server.datanode.FSDataset.(FSDataset.java:974)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:403)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.(DataNode.java:309)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1651)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1590)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1608)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1734)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1751)

2013-12-06 17:19:22,184 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: 

mkdir /opt/dfs/
 chown -R hdfs:hadoop  /opt/dfs/