[Gluster-devel] xattrs and bug 9

[Ville Tuulos]

On Fri, 14 Aug 2009, Jamson Hariss wrote:

> Hello.
>
> In 2.0.6 "bug 9" has been "fixed", meaning that extended attributes
> 'trusted.afr.volume' are no longer visible from mount point. I was using
> those attributes to determine on which brick files actually reside and
> perform checksumming on them to ensure that replicate works as intended
> (which it occasionally does not).
>
> My question - is there a way in 2.0.6 to know on which brick file
> actually resides in AFR? On a side note - why it was necessary to remove
> those attributes in the first place?

I second that question.

Extended attributes are pretty much critical for Disco. It uses them to 
decide where to execute tasks, to optimize data locality:

http://github.com/tuulos/disco/blob/c1d4ffadeba40af8a8547dd6afce562d267e464e/pydisco/disco/dfs/gluster.py#L36

If the extended attributes are really removed (I haven't upgraded yet to 
2.0.6), what's the official way of finding out where files are physically 
stored?


Ville