Re: xattr support in NFS?

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On Mon, 2012-11-12 at 14:49 -0500, Matt W. Benjamin wrote:
> Can you restate reasoning why it will never do so, and whether this is the same as saying it will never implement named attributes?
> 
> Thanks,
> 
> Matt
> 

Certainly...

xattrs are the bastard offspring from hell of ioctl() and user defined
twitter message-sized metadata. The user-defined metadata could
theoretically be exported so that we could all run 'tracker' really
really slowly over NFS, but that would just encourage the people who
believe that running an ioctl() over the network would be a really neat
idea.

named attributes have nothing to do with xattrs. They are a limited form
of the subfile concept that looks good on paper, but has rarely been
useful for anything other than storing icon images. Meh...


> ----- "Trond Myklebust" <Trond.Myklebust@xxxxxxxxxx> wrote:
> 
> > No. We will never support xattrs over NFS.
> > 
> > > -----Original Message-----
> > > From: linux-nfs-owner@xxxxxxxxxxxxxxx [mailto:linux-nfs-
> > > owner@xxxxxxxxxxxxxxx] On Behalf Of Tomasz Chmielewski
> > > Sent: Monday, November 12, 2012 10:14 AM
> > > To: linux-nfs@xxxxxxxxxxxxxxx
> > > Subject: xattr support in NFS?
> > > 
> > > Does Linux support xattr in NFS?
> > > 
> > > IF tries using it in both NFS3 and NFS4 under Debian Lenny (2.6.32,
> > both
> > > server and client), without success.
> > > 
> > > # setfattr -n user.comment -v "this is a comment" /mnt/nfs
> > > setfattr: /mnt/nfs: Operation not supported
> > > 
> > > 
> > > --
> > > Tomasz Chmielewski
> > > http://blog.wpkg.org
> > > --
> > > 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
> > N�����r��y���b�X��ǧv�^�)޺{.n�+����{���"��^n�r���z���h����&���G���h�(�階�ݢj"���m�����z�ޖ���f���h���~�m�
> 

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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