Description of problem:
==========================
Getting extended attributes of files which are in extended-attibute split-brain succeeds . Extended attributes are read from any of the brick in the replica pair. 

Version-Release number of selected component (if applicable):
============================================================
glusterfs 3.4.0.33rhs built on Sep  8 2013 13:20:26

How reproducible:
==================
Often

Steps to Reproduce:
======================
1. Create 1 x 2 replicate volume. Set "self-heal-daemon" to "off". Start the volume. 

2. Create a fuse mount. Create a file from fuse mount. "touch a"

3. Bring down brick-1.

4. Set an extended attribute on the file from mount point: 
setfattr -n trusted.mdata -v "testing_1" a

5. Bring back brick-1. Immediately brink down brick-2. 

6.  Set an extended attribute on the file from mount point: 
setfattr -n trusted.mdata -v "testing_2" a

7. Bring back brick-2. 

8. From mount point get the extended attribute set. "getfattr -d -e hex -m . a"

Actual results:
===================
root@darrel [Sep-10-2013-13:32:23] >touch a
root@darrel [Sep-10-2013-13:32:25] >setfattr -n trusted.mdata -v "testing_1" a
root@darrel [Sep-10-2013-13:33:02] >setfattr -n trusted.mdata -v "testing_2" a
root@darrel [Sep-10-2013-13:33:24] >getfattr -d -e hex -m . a
# file: a
trusted.mdata=0x74657374696e675f32

Expected results:
=================
Error message to report split-brain state . 

++++++++++++++++++++++++++++++++++++++++
Brick-1 extended attribute of file a:
+++++++++++++++++++++++++++++++++++++++++
root@fan [Sep-10-2013-13:33:38] >getfattr -d -e hex -m . /rhs/bricks/vol_dis_1_rep_2_b0/a
getfattr: Removing leading '/' from absolute path names
# file: rhs/bricks/vol_dis_1_rep_2_b0/a
trusted.afr.vol_dis_1_rep_2-client-0=0x000000000000000000000000
trusted.afr.vol_dis_1_rep_2-client-1=0x000000000000000100000000
trusted.gfid=0x18a007de01c4421a9a0a263d1a147587
trusted.mdata=0x74657374696e675f31

++++++++++++++++++++++++++++++++++++++++
Brick-2 extended attribute of file a:
+++++++++++++++++++++++++++++++++++++++++
root@mia [Sep-10-2013-13:33:38] >getfattr -d -e hex -m . /rhs/bricks/vol_dis_1_rep_2_b1/a
getfattr: Removing leading '/' from absolute path names
# file: rhs/bricks/vol_dis_1_rep_2_b1/a
trusted.afr.vol_dis_1_rep_2-client-0=0x000000000000000100000000
trusted.afr.vol_dis_1_rep_2-client-1=0x000000000000000000000000
trusted.gfid=0x18a007de01c4421a9a0a263d1a147587
trusted.mdata=0x74657374696e675f32