setclientid: string in use by client

[Trond Myklebust]

On Mon, 2007-03-05 at 14:59 -0600, Rene Salmon wrote:
> Hi list,
> 
> 
> I really need to track this down and figure out what the problem is.
> following are the messages I get in syslog and here is the code segment from
> nfs4state.c in the server kernel.
> 
> if (!cmp_creds(&conf->cl_cred, &rqstp->rq_cred)
>                                 || conf->cl_addr != ip_addr) {
>                         printk("NFSD: setclientid: string in use by client"
>                         "(clientid %08x/%08x)\n",
>                         conf->cl_clientid.cl_boot, conf->cl_clientid.cl_id);
>                         goto out;
>                 }
> 
> 
> From the syslog I can see that I get this message for all kinds of different
> client_id's but they all have the same cl_boot number?  So My question is
> what can cause this message?  Would changing:
> 
> conf->cl_clientid.cl_boot, conf->cl_clientid.cl_id);
> 
> to 
> 
> conf->cl_clientid.cl_addr, conf->cl_clientid.cl_id);
> 
> Print the IP address of the offending node?  Please help!!!

The message just means that a client that rebooted has tried to
re-establish the same clientid as last time, but using a different
credential.
Normally, the client in question should be able to work around this by
changing its clientid. Unless you are seeing a case where the clients
are actually unable to open files etc, this message can, and should be
ignored.

Bruce, could you please convert that to a dprintk()? There is absolutely
no reason to be printing out these "error messages" in stable kernels
unless there are known bugs that need to be identified and fixed.

Cheers
  Trond