On Tue, Mar 29, 2011 at 11:50:36AM -0400, peter.staubach@xxxxxxx wrote: > It does talk about NFS over UDP, interestingly, but the text on page 25, indicates that the transport of choice MUST be one of the IETF-approved congestion control transport protocols, of which, UDP is not one. > > Perhaps some clean up of RFC3530bis and RFC5661 could include removal of the UDP mentions. The text in 3530bis could be made to match that in 5661: It is permissible for a connectionless transport to be used under NFSv4.1; however, reliable and in-order delivery of data combined with congestion control by the connectionless transport is REQUIRED. As a consequence, UDP by itself MUST NOT be used as an NFSv4.1 transport. NFSv4.1 assumes that a client transport address and server transport address used to send data over a transport together constitute a connection, even if the underlying transport eschews the concept of a connection. But as we can see 5661 is very strong. > > ps > > > -----Original Message----- > From: linux-nfs-owner@xxxxxxxxxxxxxxx [mailto:linux-nfs-owner@xxxxxxxxxxxxxxx] On Behalf Of Menyhart Zoltan > Sent: Tuesday, March 29, 2011 11:26 AM > To: Chuck Lever > Cc: linux-nfs@xxxxxxxxxxxxxxx > Subject: Re: NFS v4 client blocks when using UDP protocol > > 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. > > Thank you, > > Zoltan > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Tom Haynes ex-cfb -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
