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issues with project quota over nfs

To: xfs@xxxxxxxxxxx
Subject: issues with project quota over nfs
From: brian wince <bswince@xxxxxxxxx>
Date: Thu, 12 Mar 2009 12:56:45 -0700 (PDT)
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We have a Quad-core server running gentoo 2.6.27-r7 that is used as an nfs server for a xfs partition.
We are using project quota's on directories within this partition and exporting this.
When a client tries to untar in the dir with project quotas set and reaches the quota limit the load on the NFS server goes up dramatically and stays like this for a few minutes after the tar has gone through trying to write all of it files and failing due to quota limit exceeded.
Is this a known issue and if so is there anything that can be done to resolve this.
We do not see this issue if on the locally mounted partition. This only happens over NFS.
Please let me know if you need more information or if this should be addressed on a different list.

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