From: Roland Dreier <rdreier@cisco.com>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: Tom Tucker <tom@opengridcomputing.com>,
"J. Bruce Fields" <bfields@fieldses.org>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
"linux-rdma\@vger.kernel.org" <linux-rdma@vger.kernel.org>
Subject: Re: [PATCH,RFC] nfsd: Make INET6 transport creation failure an informational message
Date: Fri, 02 Apr 2010 10:22:17 -0700 [thread overview]
Message-ID: <adaljd57os6.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <4BB61F19.2000403@oracle.com> (Chuck Lever's message of "Fri, 02 Apr 2010 12:45:13 -0400")
> > The write_ports code will fail both the INET4 and INET6 transport
> > creation if
> > the transport returns an error when PF_INET6 is specified. Some transports
> > that do not support INET6 return an error other than EAFNOSUPPORT.
>
> That's the real bug. Any reason the RDMA RPC transport can't return
> EAFNOSUPPORT in this case?
I think Tom's changelog is misleading. The problem is that the RDMA
transport actually does support IPv6, but it doesn't support the
IPV6ONLY option yet. So if NFS/RDMA binds to a port for IPv4, then the
IPv6 bind fails because of the port collision.
Implementing the IPV6ONLY option for RDMA binding is probably not
feasible for 2.6.34, so the best band-aid for now seems to be Tom's
patch.
- R.
--
Roland Dreier <rolandd@cisco.com> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
next prev parent reply other threads:[~2010-04-02 17:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-01 22:48 [PATCH,RFC] nfsd: Make INET6 transport creation failure an informational message Tom Tucker
2010-04-02 16:45 ` Chuck Lever
2010-04-02 17:22 ` Roland Dreier [this message]
2010-04-02 18:03 ` Chuck Lever
2010-04-02 19:04 ` Tom Tucker
2010-04-02 18:52 ` Tom Tucker
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