nfssvc: writting fds to kernel failed: errno 0 (Success)

nfssvc: writting fds to kernel failed: errno 0 (Success)

[Arnaud Giersch]

Hi,

Since two months, I can see the following strange messages logged each
time that rpc.nfsd is started:

Feb 11 21:46:23 bilbo nfsd[18672]: nfssvc: writting fds to kernel failed: errno 0 (Success)
Feb 11 21:46:23 bilbo nfsd[18672]: nfssvc: writting fds to kernel failed: errno 0 (Success)

It seems however harmless, the NFS server works fine.  

AFAICS, these messages appeared with some kernel between 2.6.18 and
2.6.19.  I don't know which one exactly.  With earlier kernels, the
file /proc/fs/nfsd/portlist does not exist, and the function
nfssvc_setfds() from support/nfs/nfssvc.c (in nfs-utils) exits early
and silently.

This issue has recently reported in the Debian bug tracking system.  See
http://bugs.debian.org/408669

Regards,

        Arnaud Giersch

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Re: nfssvc: writting fds to kernel failed: errno 0 (Success)

[Neil Brown]

On Monday February 12, arnaud.giersch@free.fr wrote:
> Hi,
> 
> Since two months, I can see the following strange messages logged each
> time that rpc.nfsd is started:
> 
> Feb 11 21:46:23 bilbo nfsd[18672]: nfssvc: writting fds to kernel failed: errno 0 (Success)
> Feb 11 21:46:23 bilbo nfsd[18672]: nfssvc: writting fds to kernel failed: errno 0 (Success)
> 
> It seems however harmless, the NFS server works fine.  

Yes, it is harmless - except that it causes concern.

The following kernel patch should stop the error (and a separate patch
will fix the typo in the error message...)

Thanks,
NeilBrown

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./fs/nfsd/nfsctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff .prev/fs/nfsd/nfsctl.c ./fs/nfsd/nfsctl.c
--- .prev/fs/nfsd/nfsctl.c	2007-02-12 10:37:53.000000000 +1100
+++ ./fs/nfsd/nfsctl.c	2007-02-12 10:38:11.000000000 +1100
@@ -123,7 +123,7 @@ static ssize_t nfsctl_transaction_write(
 		return PTR_ERR(data);
 
 	rv =  write_op[ino](file, data, size);
-	if (rv>0) {
+	if (rv >= 0) {
 		simple_transaction_set(file, rv);
 		rv = size;
 	}

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Re: nfssvc: writting fds to kernel failed: errno 0 (Success)

[Arnaud Giersch]

Lundi 12 f=E9vrier 2007, vers 00:39:49 (+0100), Neil Brown a =E9crit:

> On Monday February 12, arnaud.giersch@free.fr wrote:
>> Feb 11 21:46:23 bilbo nfsd[18672]: nfssvc: writting fds to kernel failed=
: errno 0 (Success)
[...]
> The following kernel patch should stop the error (and a separate patch
> will fix the typo in the error message...)

Thanks.  The patch looks ok to me, but I am sorry I can't test it for
the moment.  =


The machines running an NFS server that I have access to are either
our main server at work, or my old home server which takes several
hours to build a new kernel.

        Arnaud Giersch

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er.
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21642
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