[ovirt-users] how to expand a arbitrated-distributed-replicated volume

Hello all, how can I expand a arbitrated-distributed-replicated volume without adding additional arbiter bricks? my current gluster config is: Volume Name: data Type: Distributed-Replicate Volume ID: dcf75cf7-1937-4ce9-a7d0-46a56a3be4b4 Status: Started Snapshot Count: 0 Number of Bricks: 3 x (2 + 1) = 9 Transport-type: tcp Bricks: Brick1: gl1.lan:/gluster_bricks/sdc/sdc Brick2: gl2.lan:/gluster_bricks/sdc/sdc Brick3: gl3.lan:/gluster_bricks/sdx/sdx (arbiter) Brick4: gl2.lan:/gluster_bricks/sdd/sdd Brick5: gl3.lan:/gluster_bricks/sdc/sdc Brick6: gl1.lan:/gluster_bricks/sdx/sdx (arbiter) Brick7: gl3.lan:/gluster_bricks/sdd/sdd Brick8: gl1.lan:/gluster_bricks/sdd/sdd Brick9: gl2.lan:/gluster_bricks/sdx/sdx (arbiter)