当我hadoop namenode -formate之后，我运行start-dfs.sh之后，namenode的日志报错，错误如下：

2011-08-11 18:27:20,179 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: NameNode is not formatted.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:317)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:87)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:311)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:292)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:201)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:279)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:956)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)

core-site.xml的配置如下：
<configuration>
<property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:9000</value>
</property>
<property>
  <name>hadoop.tmp.dir</name>
  <value>/opt/hadoop/hadooptmp</value>
</property>
</configuration>
hdfs-site.xml的配置如下：
<configuration>
<property>
  <name>dfs.name.dir</name>
  <value>/opt/hadoop/hdfs/name</value>
</property>
<property>
  <name>dfs.data.dir</name>
  <value>/opt/hadoop/hdfs/data</value>
</property>
<property>
  <name>dfs.replication</name>
  <value>1</value>
</property>
</configuration>
mapred-site.xml配置如下：
<configuration>
<property>
  <name>mapred.job.tracker</name>
  <value>localhost:8021</value>
</property>
<property>
  <name>mapred.local.dir</name>
  <value>/opt/hadoop/mapred/local</value>
</property>
<property>
  <name>mapred.system.dir</name>
  <value>/opt/hadoop/mapred/system</value>
</property>
</configuration>







从日志分析是没有formate，但是我的确formate了。namenode的name目录是不会自动创建的，我手动创建，并且修改了权限为chmod -R 777 hadoop ，所以从读写的权限来也没有问题。但是如果我不手动也会报错，错误是：

2011-08-11 18:37:09,401 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /opt/hadoop/hdfs/name is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:290)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:87)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:311)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:292)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:201)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:279)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:956)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)


有没有哪位能帮我解决下这个问题，非常感谢。我怀疑是hadoop权限的问题，希望老师赐教。