From: "Iyer, Rahul" <Rahul.Iyer@netapp.com>
Subject: Re: How to specify sctp protocol?
Date: Mon, 29 Oct 2007 21:35:31 -0700
Message-ID: <7619F3097FAB384287CF636FF92D0CA10BA4C08E@exsvl01.hq.netapp.com>
References: <200710291746.15411.huangxiong@uit.com.cn>
	<200710291808.45838.huangxiong@uit.com.cn>
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	<200710300958.15823.huangxiong@uit.com.cn>
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Cc: nfs@lists.sourceforge.net
To: "Huang Xiong" <huangxiong@uit.com.cn>
In-Reply-To: <200710300958.15823.huangxiong@uit.com.cn>
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> 
> Hi Rahul,
> 
> Thanks for your kindly comment. 
> 
> NFSv4 supports TCP and UDP, does this implementation affect 
> the relative
> operations(mount/read/write) on NFS share exported from 
> underlying GFS filesystem, which indicates it uses SCTP only?
>
If I understand you correctly, it shouldn't.
 
> Or if I want to use NFS on GFS smoothly, need I add TCP 
> support to GFS?
>
Sorry, can't help you here. I'm not conversant with GFS configuration.
Regards
Rahul


> Regards,
> Phillip
> 
> 
>  
> 
> 
> 
> 在 星期一 29 十月 2007 18:12，Iyer, Rahul 写道：
> > No, I meant the Linux implementation doesn't support it yet. It 
> > supports TCP and UDP transports over IPv4. IPv6 is being 
> added. -Rahul
> >
> > > -----Original Message-----
> > > From: Huang Xiong [mailto:huangxiong@uit.com.cn]
> > > Sent: Monday, October 29, 2007 3:39 PM
> > > To: Iyer, Rahul
> > > Cc: nfs@lists.sourceforge.net
> > > Subject: Re: [NFS] How to specify sctp protocol?
> > >
> > > Perhaps I understand wrong. Please see below:
> > >
> > >
> > > From "http://www.ietf.org/rfc/rfc3530.txt"
> > >
> > > 3.1.  Ports and Transports
> > >
> > >    Historically, NFS version 2 and version 3 servers have 
> resided on
> > >    port 2049.  The registered port 2049 [RFC3232] for the 
> NFS protocol
> > >    should be the default configuration.  Using the 
> registered port for
> > >    NFS services means the NFS client will not need to use the RPC
> > >    binding protocols as described in [RFC1833]; this will 
> allow NFS to
> > >    transit firewalls.
> > >
> > >    Where an NFS version 4 implementation supports 
> operation over the 
> > > IP
> > >    network protocol, the supported transports between NFS and IP 
> > > MUST be
> > >    among the IETF-approved congestion control transport 
> protocols, 
> > > which
> > >    include TCP and SCTP.  To enhance the possibilities for
> > >    interoperability, an NFS version 4 implementation MUST support
> > >    operation over the TCP transport protocol, at least 
> until such time
> > >    as a standards track RFC revises this requirement to use a 
> > > different
> > >    IETF-approved congestion control transport protocol.
> > >
> > >
> > >
> > > 在 星期一 29 十月 2007 17:59，Iyer, Rahul 写道：
> > >
> > > > I don't believe you can. I don't think NFS over SCTP is
> > >
> > > supported yet.
> > >
> > > > -Rahul
> > > >
> > > > > -----Original Message-----
> > > > > From: Huang Xiong [mailto:huangxiong@uit.com.cn]
> > > > > Sent: Monday, October 29, 2007 3:16 PM
> > > > > To: nfs@lists.sourceforge.net
> > > > > Subject: [NFS] How to specify sctp protocol?
> > > > >
> > > > > Hello folks,
> > > > >
> > > > > As NFSv4 supports SCTP protocol,  how to specify this 
> protocol 
> > > > > in application?
> > > > > or need to add some option appened with mount the NFS shares?
> > > > >
> > > > > My underlying filesystem is GFS, which uses SCTP for cluster 
> > > > > internode communication. I wonder that I have to specify the 
> > > > > SCTP option when I try to mount NFS share based on GFS.
> > > > >
> > > > > I've been trying to find some useful information but with
> > >
> > > no success.
> > >
> > > > > Anyone having an idea or experienced the same problem?
> > > > > Maybe I can provide more useful information on this.
> > > > >
> > > > > Thanks in advance.
> > > > > Phillip
> > > > >
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> 

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