Does anyone know if there is a mount option for Linux clients that
will bypassing NFS caching and force direct IO?

Thanks.

~F

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On 2007-07-24, Faeandar <mr_castalot@yahoo.com> wrote:
> Does anyone know if there is a mount option for Linux clients that
> will bypassing NFS caching and force direct IO?
>

"man 5 nfs"

noac		Disable  all forms of attribute caching entirely.
This extracts a significant performance penalty but it
allows two different NFS clients to get reasonable
results when both clients are actively writing to a
common export on the server.

noac		Disable attribute caching, and force synchronous writes.
This extracts a server performance penalty but it allows
two different NFS clients to get reasonable good results
when both clients are actively writing to common filesystem
on the server.

The second description is for v4, but maybe "force synchronous writes" still
applies to both.


Not sure if this is exactly what you're looking for... but it's the closest
I'm aware of.


-jf

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