oiv查看fsimage
hdfs oiv -i /data1/hadoop/dfs/name/current/fsimage_0000000000019372521 -o /home/hadoop/fsimage.txt
oev查看edit log
hdfs oev -i edits_0000000000000000006-0000000000000000013 -o ~/edits.xml -p xml
诊断
fsck
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