Re: [PATCH] NFS: fix NFSv3 with sec=krb5 and CONFIG_NFS_V3_ACL=y

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> From: "J. Bruce Fields" <bfields@fieldses.org>
> To: "Jan Stancek" <jstancek@redhat.com>
> Cc: linux-nfs@vger.kernel.org, bfields@redhat.com, "Trond Myklebust" <Trond.Myklebust@netapp.com>
> Sent: Monday, 8 July, 2013 10:16:43 PM
> Subject: Re: [PATCH] NFS: fix NFSv3 with sec=krb5 and CONFIG_NFS_V3_ACL=y
> 
> On Mon, Jul 01, 2013 at 05:32:34PM +0200, Jan Stancek wrote:
> > Starting with commit:
> >   commit f994c43d19a9116727d4c228d3f13db595bff562
> >   Author: Trond Myklebust <Trond.Myklebust@netapp.com>
> >   Date:   Thu Nov 1 12:14:14 2012 -0400
> >       SUNRPC: Clean up rpc_bind_new_program
> > 
> > operations on directory mounted with -onfsvers=3,tcp,sec=krb5 fail
> > with Input/Output error after ~60 second timeout. This is presumably
> > because upcalls for 'nfsacl' are not getting anywhere.
> > 
> > This patch enables pipe dir for nfsacl_program and changes its name
> > to 'nfs'. This name will be used in upcalls and whole setup should
> > work as it did in past - just with nfs/hostname principal.
> 
> I think this was the problem that nfs-utils commits
> 
> 	a1f8afc560 gssd: Remove insane sanity checks of the service name
> 	a56989b665 gssd: Handle the target name correctly
> 
> were supposed to fix?
> 
> But perhaps the kernel needs a fix too to fix a regression with old
> userspace.

I saw this error with nfs-utils.1.2.9-rc1, which should already contain
those 2 commits.

Regards,
Jan

> 
> --b.
> 
> > 
> > Signed-off-by: Jan Stancek <jstancek@redhat.com>
> > ---
> >  fs/nfs/nfs3client.c |    3 ++-
> >  1 files changed, 2 insertions(+), 1 deletions(-)
> > 
> > diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
> > index b3fc65e..09a7d06 100644
> > --- a/fs/nfs/nfs3client.c
> > +++ b/fs/nfs/nfs3client.c
> > @@ -9,11 +9,12 @@ static const struct rpc_version *nfsacl_version[] = {
> >  };
> >  
> >  const struct rpc_program nfsacl_program = {
> > -	.name			= "nfsacl",
> > +	.name			= "nfs",
> >  	.number			= NFS_ACL_PROGRAM,
> >  	.nrvers			= ARRAY_SIZE(nfsacl_version),
> >  	.version		= nfsacl_version,
> >  	.stats			= &nfsacl_rpcstat,
> > +	.pipe_dir_name		= NFS_PIPE_DIRNAME,
> >  };
> >  
> >  /*
> > --
> > 1.7.1
> > 
> > --
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