Hi Matt,

Thank you for the explanation and good luck on the NFS project!

Regards,
---Sandy

> -----Original Message-----
> From: Matt Benjamin [mailto:mbenja...@redhat.com]
> Sent: Tuesday, March 22, 2016 10:12 PM
> To: xusangdi 11976 (RD)
> Cc: ceph-us...@ceph.com; ceph-de...@vger.kernel.org
> Subject: Re: About the NFS on RGW
> 
> Hi Xusangdi,
> 
> NFS on RGW is not intended as an alternative to CephFS.  The basic idea is to 
> expose the S3
> namespace using Amazon's prefix+delimiter convention (delimiter currently 
> limited to '/').  We use
> opens for atomicity, which implies NFSv4 (or 4.1).  In addition to 
> limitations by design, there are some
> limitations in Jewel.  For example, clients should use (or emulate) sync 
> mount behavior.  Also, I/O is
> proxied--that restriction should be lifted in future releases.  I'll post 
> here when we have some usage
> documentation ready.
> 
> Matt
> 
> ----- Original Message -----
> > From: "Xusangdi" <xu.san...@h3c.com>
> > To: mbenja...@redhat.com, ceph-us...@ceph.com
> > Cc: ceph-de...@vger.kernel.org
> > Sent: Tuesday, March 22, 2016 8:12:41 AM
> > Subject: About the NFS on RGW
> >
> > Hi Matt & Cephers,
> >
> > I am looking for advise on setting up a file system based on Ceph. As
> > CephFS is not yet productive ready(or I missed some breakthroughs?),
> > the new NFS on RadosGW should be a promising alternative, especially
> > for large files, which is what we are most interested in. However,
> > after searching around the Ceph documentation
> > (http://docs.ceph.com/docs/master/) and recent community mails, I
> > cannot find much information about it. Could you please provide some 
> > introduction about the new
> NFS, and (if possible) a raw way to try it?
> > Thank you!
> >
> > Regards,
> > ---Sandy
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> --
> Matt Benjamin
> Red Hat, Inc.
> 315 West Huron Street, Suite 140A
> Ann Arbor, Michigan 48103
> 
> http://www.redhat.com/en/technologies/storage
> 
> tel.  734-707-0660
> fax.  734-769-8938
> cel.  734-216-5309
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