[CentOS] new RAID5 array: 3x500GB with XFS

Sat Jul 4 06:14:20 UTC 2009
James A. Peltier <jpeltier at fas.sfu.ca>

On Fri, 3 Jul 2009, Coert Waagmeester wrote:

> Hello all,
> I have yesterday after some typos, sent my ext3 RAID5 array to the
> void...
> I want to recreate it now, but I read on
> http://wiki.centos.org/HowTos/Disk_Optimization
> that you can optimize the filesystem on top of the RAID.
> Will this wiki article be exactly the same for XFS?
> Is it worth the trouble to also create an LVM volume on the RAID array?
> Regards,
> Coert
> _______________________________________________
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> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

You have to understand the details of how the raid was built, stripe size, 
logical unit number and RAID-5 itself to properly optimize.  Google for 
XFS performance tuning and you'll find lots of details.

James A. Peltier
Systems Analyst (FASNet), VIVARIUM Technical Director
HPC Coordinator
Simon Fraser University - Burnaby Campus
Phone   : 778-782-6573
Fax     : 778-782-3045
E-Mail  : jpeltier at sfu.ca
Website : http://www.fas.sfu.ca | http://vivarium.cs.sfu.ca
MSN     : subatomic_spam at hotmail.com

The point of the HPC scheduler is to
keep everyone equally unhappy.