Description of problem:
I was creating gluster block devices in arbiter block hosting volumes. But i was not able to do it. heketi is not able to run command on one of the gluster pod. All services are running fine on that pod.


Version-Release number of selected component (if applicable):
gluster-block-0.2.1-20.el7rhgs.x86_64


How reproducible:
It is not easy to reproducible.

Steps to Reproduce:
1. Create one arbiter block volume of 500 gb.
# heketi-cli volume create --size=100 --gluster-volume-options='user.heketi.arbiter true' --block
2. create pvc of 10 gb.
# oc create -f pvc.yaml
3. we can create blockvolume with heketi also
# heketi blockvolume create --size 10

Actual results: It 
Heketi is giving error that failed to run command on one gluster pod.

Expected results:
It should create block device.

Additional info: