Extended attributes over NFSv3

[Peter Staubach]

Christoph Hellwig wrote:
> On Wed, Jul 23, 2008 at 10:46:40AM -0400, Jean-Francois Bouchard wrote:
>   
>> Hello,
>>
>> Our backup system rely on extended attributes (ex :
>>
>> getfattr -d tzdata-2007h-1.el4.noarch.rpm
>> # file: tzdata-2007h-1.el4.noarch.rpm
>> user.content_hash="1,1191668578.0000,458656,F1D72D65122D89C0009625C6414F6BFC")
>>
>> to work. I would like to know how they are handled in NFSv4 ? (at my
>> knowledge, in NFSv3, there is no support)
>>     
>
> SGI has a side band protocol for extended attributes over NFSv3 and even
> released sample code a few years ago.  If someone cares enough this
> would be about two man month to implement it.

There is already the NFS_ACL protocol which could handle the
situation too, if someone wanted to implement it.

I think that the discussion is about NFSv4 though, so neither
protocol is suitable.

       ps