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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "DiskSetup" by SteveLoughran
Date Mon, 01 Nov 2010 15:58:30 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "DiskSetup" page has been changed by SteveLoughran.
The comment on this change is: comment on ext4.
http://wiki.apache.org/hadoop/DiskSetup?action=diff&rev1=9&rev2=10

--------------------------------------------------

  
   The long and short of it is that we use XFS to speed up our new machine deployment, and
that's it.
  
+ === Ext4 ===
+ 
+ The Ext4 Linux filesystem has delayed allocation of data which makes it handle unplanned
server shutdowns/power outages less well than classic ext3. Consider turning off the delalloc
option in /etc/fstab unless you trust your UPS.
+ 

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