On http://download.gluster.org/pub/gluster/glusterfs/3.2/Documentation/AG/html/chap-Administration_Guide-Setting_Volumes.html a warning should be added to prevent customers from expecting replication of changes made directly to bricks.
A volume is a logical collection of bricks where each brick is an export directory on a server in the trusted storage pool. Most of the gluster management operations happen on the volume.
### WARNING GOES HERE ###
You can create new volumes in your storage environment, as needed. When creating a new volume, you must specify the bricks that comprise the volume.
I have warning for the same at: http://documentation-stage.bne.redhat.com/docs/en-US/Red_Hat_Storage/2.0/html/Administration_Guide/chap-User_Guide-Setting_Volumes.html
Not sure why this is on QA for a change to RHS documentation. Shouldn't this change be "upstream first" before it can change from ASSIGNED?