[Linux-PowerEdge] Extremely poor performance with LVM vs. RAW disc

James A. Peltier jpeltier at sfu.ca
Mon Nov 5 12:38:31 CST 2012


| In what way exactly is using whole disks more efficient than a
| partition
| and why can XFS "use it better"?
| 
| Regards,
|   Dennis

Slicing and dicing the disk using partitions is completely unnecessary, adds additional overhead and complexity and is far less flexible.  When using whole disk LVM you remove that complexity and can also give the file system additional insight into the underlying disks.  XFS is just one example, but other file systems benefit to.  I'm just saying, that if you don't *HAVE* to use partitions then don't.  Whole disk is much better.

-- 
James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone   : 778-782-6573
Fax     : 778-782-3045
E-Mail  : jpeltier at sfu.ca
Website : http://www.sfu.ca/itservices
          http://blogs.sfu.ca/people/jpeltier

"The smartest people are constantly revising their understanding, reconsidering a problem they thought they’d already solved. They’re open to new points of view, new information, new ideas, contradictions, and challenges to their own way of thinking." - Jeff Bezos



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