Re: [PATCH 0/7] overlay filesystem: request for inclusion

[Sorin Faibish]

On Sun, 10 Jul 2011 04:23:17 -0400, Ric Wheeler <ricwheeler@xxxxxxxxx>
wrote:

> On 07/08/2011 01:57 PM, Miklos Szeredi wrote:
> > "Hans-Peter Jansen"<hpj@xxxxxxxxx>  writes:
> >
> > > All kodos to you, Miklos. While I'm still missing a major feature from
> > > overlayfs that is a NFS as upper layer, it provides a fairly good
> > > start. A commitment from you, that such an extension is considered for
> > > inclusion - given, that it appears one day - is appreciated. Also,
> > > since xattr support is available for NFS,
> > AFAIK development of generic xattr support on NFS stopped some time ago.
>
> Hi Miklos,
>
> There is a proposed (at the IETF) standard called "labelled NFS" that  
> would allow the protocol to handle xattrs.
Will be included in NFSv4.2. And we are already very close to a good I-D.
Not sure that xattr change mentioned here will be included. You can look
at the current I-D at:
http://datatracker.ietf.org/doc/draft-quigley-nfsv4-labeled/

/Sorin

> It has not set the world on fire in terms of enthusiasm, but has been  
> making some progress. We have patches from Dave Quigley that did work,  
> but need to resolve the standards issues I suspect before it could make  
> progress upstream...
>
> Ric
>
> > > it would be nice to outline, what is missing for such an
> > > implementation from overlayfs's POV.
> > Allow using namspace polluting xattr replacements, such as aufs is
> > doing.
> >
> > But why?  Why is it better to do the overlaying on the client instead of
> > the server?
> >
> > Thanks,
> > Miklos
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--
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Sorin Faibish
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Unified Storage Division

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