[Gluster-devel] Extended Attributes

[Amar S. Tumballi]

Replies Inline.

On Mon, May 12, 2008 at 3:29 PM, Jordan Mendler <jmendler at ucla.edu> wrote:

> Hi all,
>
> Can someone please give me a run down of when extended attriubutes are
> needed in the underlying filesystem accessed by gluster?
>
> 1) Is it at all needed for unify without AFR and/or stripe?

No, its not needed in unify.

>
> 2) For AFR and stripe, are they needed for both the namespace and the
> storage filesystems, or only for one of the two?

Its needed by the subvolumes of stripe and AFR, whether subvolumes are
namespace, or storage backend, it doesn't matter.


>
> 3) In what other scenarios are extended attributes needed?
>
Currently its used only by those two translators inside GlusterFS.  Linux
systems use it for supporting Posix ACLs. if you don't need it, you can go
ahead.


>
> I am trying to see if there is a way to use gluster with FreeBSD/ZFS given
> that extended attributes are not yet supported. Depending on where the
> xattr
> are actually needed I was thinking to perhaps split off components, since
> I
> only care about ZFS for data storage volume.
>

Also I figured out that you need some package 'linux-compat' for
compatibility of linux packages (This package has all the missing header
files). I compiled on a system with this package, hence didn't get any
problems with compilation. I noticed with bare minimum installation, this
package is not installed.


> Thanks,
> Jordan
>


-- 
Amar Tumballi
Gluster/GlusterFS Hacker
[bulde on #gluster/irc.gnu.org]
http://www.zresearch.com - Commoditizing Super Storage!