NFS Client turning parameters?

NFS Client turning parameters?

[Brent Clements]

Do you guys have any suggested kernel tuning parameters for a nfs v3
linux client? My server is an hp/ux fileserver.

Thanks,
Brent Clements







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32k NFS blocksize not working

[Brent Clements]

We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp server
support compiled in.

We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp client
support compiled.


If we specify a read/write size above 8192 on the client, and then mount
the nfs directory. It gives us the following on /proc/mounts


cluster:/usr/local/ /tmp/d nfs
rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0

Do we have to edit something in a kernel include file to allow NFSV3 to
mount above 8k?

Thanks,
Brent 





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Re: 32k NFS blocksize not working

[Dan Brunner]

I believe your running UDP.

Try running it over TCP, and see what you get...


Dan


On Wednesday, March 12, 2003, at 03:55  PM, bclem@rice.edu wrote:

> We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp server
> support compiled in.
>
> We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp client
> support compiled.
>
>
> If we specify a read/write size above 8192 on the client, and then 
> mount
> the nfs directory. It gives us the following on /proc/mounts
>
>
> cluster:/usr/local/ /tmp/d nfs
> rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0
>
> Do we have to edit something in a kernel include file to allow NFSV3 to
> mount above 8k?
>
> Thanks,
> Brent
>
>
>
>
>
> -------------------------------------------------------
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Re: 32k NFS blocksize not working

[Trond Myklebust]

>>>>> " " == Brent Clements <bclem@rice.edu> writes:

     > We have a linux server running 2.4.20 plus it has nfsv3 udp/tcp
     > server support compiled in.

     > We have a linux client running 2.4.20 plus it has nfsv3 udp/tcp
     > client support compiled.


     > If we specify a read/write size above 8192 on the client, and
     > then mount the nfs directory. It gives us the following on
     > /proc/mounts


     > cluster:/usr/local/ /tmp/d nfs
     > rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=cluster 0 0

     > Do we have to edit something in a kernel include file to allow
     > NFSV3 to mount above 8k?

You'll have to find a server which supports it. Linux 2.4.x knfsd as
it stands, supports only 8k, and so the client will override any
attempt that you make to set either rsize or wsize > 8k.

If you are feeling brave, you might try to change the value of
NFSSVC_MAXBLKSIZE in include/linux/nfsd/const.h and recompiling the
server.

Cheers,
  Trond


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