[Beowulf] Help for terrible NFS write performance
orion at cora.nwra.com
Fri Aug 21 13:56:37 EDT 2009
On 08/21/2009 11:38 AM, Joe Landman wrote:
> Orion Poplawski wrote:
>> /export *.cora.nwra.com(rw,sync,fsid=0)
>> /export/cora6 *.cora.nwra.com(rw,sync,nohide)
>> /export/working *.cora.nwra.com(rw,sync,nohide)
> Ok. There it is... Sync.
> Don't need to see anything else.
> That is it.
Okay, how afraid should I be of using async? man exports states:
async This option allows the NFS server to violate the NFS
and reply to requests before any changes made by that
have been committed to stable storage (e.g. disc drive).
Using this option might improve performance with
only, but at the cost that an unclean server restart
crash) can cause data to be lost or corrupted.
I tend to like to avoid data loss or corruption.
Technical Manager 303-415-9701 x222
NWRA/CoRA Division FAX: 303-415-9702
3380 Mitchell Lane orion at cora.nwra.com
Boulder, CO 80301 http://www.cora.nwra.com
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