Created attachment 1204094 [details]
server

Description of problem:
Volume goes into read only mode when two bricks are down from an arbiter subvolume of 4*(2+1) volume. Files cannot be created on root of the mounted directory.

Version-Release number of selected component (if applicable):

[root@dhcp46-231 3.8.2server]# gluster --version
glusterfs 3.8.4 built on Sep 20 2016 07:17:14
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General Public License.


How reproducible:
100%


Steps to Reproduce:
1. Create a 4x(2+1) arbiter volume - testvol
2. Mount it on client
3. Create 10 files and a directory on the mount point.
4. Now kill 2 bricks from the first subvolume i.e Data & Arbiter brick.
5. Create new files on the / of the mount point. 

Actual results:
Mount point goes into read-only mode. No files can be created after killing the bricks.

Expected results:
File creation should work for other bricks except the killed bricks subvolume.

Additional info:
if we create a directory and create files in that directory  it succeed. 
tried this on 2*3 volume and directory creation is successful.