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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "HDFS-RAID" by PatrickKling
Date Thu, 02 Dec 2010 19:45:41 GMT
Dear Wiki user,

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The "HDFS-RAID" page has been changed by PatrickKling.
The comment on this change is: Added RaidFSCK instructions..


  === RaidShell ===
- (currently under development)
  The RaidShell is a tool that allows the administrator to maintain and inspect a DRFS. It
supports commands for manually triggering the 
  recomputation of bad data blocks and also allows the administrator to display a list of
irrecoverable files (i.e., files for which too
  many data or parity blocks have been lost).
+ To validate the integrity of a file system, run RaidFSCK as follows:
+ {{{
+ $HADOOP_HOME/bin/hadoop org.apache.hadoop.raid.RaidShell -fsck [path]
+ }}}
+ This will print a list of corrupt files (i.e., files which have lost too many
+ blocks and can no longer be fixed by Raid).
  === ErasureCode ===

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