Return-Path: Received: from rcsinet10.oracle.com ([148.87.113.121]:63604 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751163Ab1C2Pqp convert rfc822-to-8bit (ORCPT ); Tue, 29 Mar 2011 11:46:45 -0400 Subject: Re: NFS v4 client blocks when using UDP protocol Content-Type: text/plain; charset=us-ascii From: Chuck Lever In-Reply-To: <4D91FA1D.1000206@bull.net> Date: Tue, 29 Mar 2011 11:46:39 -0400 Cc: linux-nfs@vger.kernel.org Message-Id: <40935036-45B1-4B12-BBF4-D4FEADF29FE7@oracle.com> References: <4D91ED79.4020302@bull.net> <4A05F533-1BE6-4DFC-BC53-9392DA8BED76@oracle.com> <4D91FA1D.1000206@bull.net> To: Menyhart Zoltan Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Mar 29, 2011, at 11:26 AM, Menyhart Zoltan wrote: > Chuck Lever wrote: >> Zoltan- >> >> As far as I know, NFSv4 is not supported on UDP transports. >> Some of it may work, but no warrantee, either expressed or implied, is given. :-) > > Do you mean the Linux implementation? > Because the RFC 3530 speaks about how to do NFS v4 over UDP and UDP6. My reading of 3530 is that NFSv4 is not allowed over non-stream transports like UDP. The Linux implementation does not support NFSv4 over UDP, even though it allows you to try it. -- Chuck Lever chuck[dot]lever[at]oracle[dot]com