* Reserving port 800 on linux NFS clients
@ 2004-03-17 4:36 Errol Casey
2004-03-17 5:50 ` ian sison (mailing list)
0 siblings, 1 reply; 3+ messages in thread
From: Errol Casey @ 2004-03-17 4:36 UTC (permalink / raw)
To: nfs
Recently, I've run into an issue where my Linux NFS clients are using
port 800 to communicate with NFSd daemons running on an Netapp Filer.
Is there any way to configure the Linux NFS client software to not use
port 800. Looking at the ports in use on my clients, it looks as if a
series of ports 797-800 are used to communicate to nfsd.
I would like to use port 800 for another daemon. On a few machines,
this conflict does not occur.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Reserving port 800 on linux NFS clients
2004-03-17 4:36 Reserving port 800 on linux NFS clients Errol Casey
@ 2004-03-17 5:50 ` ian sison (mailing list)
2004-03-17 8:33 ` Olaf Kirch
0 siblings, 1 reply; 3+ messages in thread
From: ian sison (mailing list) @ 2004-03-17 5:50 UTC (permalink / raw)
To: nfs
I think http://www.lowth.com/LinWiz/nfs_help.html would be helpful in
this.
On Tue, 16 Mar 2004, Errol Casey wrote:
> Recently, I've run into an issue where my Linux NFS clients are using
> port 800 to communicate with NFSd daemons running on an Netapp Filer.
>
> Is there any way to configure the Linux NFS client software to not use
> port 800. Looking at the ports in use on my clients, it looks as if a
> series of ports 797-800 are used to communicate to nfsd.
>
> I would like to use port 800 for another daemon. On a few machines,
> this conflict does not occur.
>
>
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by: IBM Linux Tutorials
> Free Linux tutorial presented by Daniel Robbins, President and CEO of
> GenToo technologies. Learn everything from fundamentals to system
> administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
> _______________________________________________
> NFS maillist - NFS@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nfs
>
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Reserving port 800 on linux NFS clients
2004-03-17 5:50 ` ian sison (mailing list)
@ 2004-03-17 8:33 ` Olaf Kirch
0 siblings, 0 replies; 3+ messages in thread
From: Olaf Kirch @ 2004-03-17 8:33 UTC (permalink / raw)
To: ian sison (mailing list); +Cc: nfs
On Wed, Mar 17, 2004 at 01:50:08PM +0800, ian sison (mailing list) wrote:
> I think http://www.lowth.com/LinWiz/nfs_help.html would be helpful in
> this.
I don't think it will help, because this document covers server side
port allocation. The question was about the NFS client port allocation.
The NFS currently allocates a reserved port for the NFS client
by trying all ports from 800 downward, until it finds one it can
bind to.
There are two ways to make the client skip port 800.
- start your network service before mounting any NFS file
systems. When NFS tries to bind a reserved port, it
will find this one is already in use and skip it
- if that is not possible, you need to patch net/sunrpc/xprt.c
and change the XPRT_MAX_RESVPORT define to e.g. 799
Olaf
--
Olaf Kirch | Stop wasting entropy - start using predictable
okir@suse.de | tempfile names today!
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2004-03-17 4:36 Reserving port 800 on linux NFS clients Errol Casey
2004-03-17 5:50 ` ian sison (mailing list)
2004-03-17 8:33 ` Olaf Kirch
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