From: bfields@fieldses.org (J. Bruce Fields)
To: Benjamin Coddington <bcodding@redhat.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>,
Anders Blomdell <anders.blomdell@control.lth.se>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: Mount regression between 4.0.4 client and 2.6.35 server
Date: Fri, 26 Jun 2015 13:50:32 -0400 [thread overview]
Message-ID: <20150626175032.GA4293@fieldses.org> (raw)
In-Reply-To: <alpine.OSX.2.19.9992.1506260807060.13917@planck.local>
On Fri, Jun 26, 2015 at 08:17:30AM -0400, Benjamin Coddington wrote:
> On Thu, 18 Jun 2015, Trond Myklebust wrote:
>
> > On Thu, Jun 18, 2015 at 4:04 AM, Anders Blomdell
> > <anders.blomdell@control.lth.se> wrote:
> > >
> > > I have a problem with a 4.0.4 client refusing to mount from a 2.6.35 server
> > > due to NFS4ERR_INVAL returned during nfs4_discover_server_trunking. See
> > > https://bugzilla.redhat.com/show_bug.cgi?id=1228272.
> >
> >
> > Why should we change the clients if the server is in clear and obvious
> > violation of the spec?
>
>
> What's happening here is knfsd older than 2.6.38 will return NFS4ERR_INVAL
> for EXCHANGE_ID that has EXCHGID4_FLAG_BIND_PRINC_STATEID set in the
> request.
Note that intentionally left off by default until 3.11, exactly because
I thought there was a high risk of incompatibility with future clients
at that point.
> Should the client's use of stateid/princ binding be optional/configureable?
So, perhaps there's other reasons for doing this, but we're not going to
justify it for compatibility with out-of-spec behavior in older
experimental server code.
Possibly more annoying is that Solaris servers (I don't know which
versions, I just have one report that says "Solaris 10") are also
returning GARBAGE_ARGS instead of NFS4ERR_MINOR_VERS_MISMATCH on
attempts to use 4.2.
--b.
next prev parent reply other threads:[~2015-06-26 17:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-18 8:04 Mount regression between 4.0.4 client and 2.6.35 server Anders Blomdell
2015-06-18 11:49 ` Trond Myklebust
2015-06-18 12:28 ` Anders Blomdell
2015-06-18 12:53 ` Trond Myklebust
2015-06-18 14:20 ` Steve Dickson
2015-06-26 12:17 ` Benjamin Coddington
2015-06-26 17:50 ` J. Bruce Fields [this message]
2015-06-26 17:58 ` Trond Myklebust
2015-06-26 18:32 ` J. Bruce Fields
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