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suggested tuning for XFS on RAID system

To: xfs@xxxxxxxxxxx
Subject: suggested tuning for XFS on RAID system
From: "Fong Vang" <sudoyang@xxxxxxxxx>
Date: Fri, 4 Apr 2008 11:00:27 -0700
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Anyone has any suggestion on tuning XFS for more stability and reliability
on a 1TB and 7TB XFS file system that holds potentially millions of small
files?  The file system is built on a RAID-10 file system with caching
turned on in the raid controller (can't switch it off or we loose too much

about 80% of the IO operations are write for about 2 months then this
switches to 20% write and 80% reads after the two month period.

Any thoughts?

Thank you for your help.

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