~/.../openshift/origin → oc get pods
NAME                            READY     STATUS             RESTARTS   AGE
docker-registry-1-dkmph         1/1       Running            0          5m
docker-registry-3-deploy        1/1       Running            0          2m
docker-registry-3-f6grl         1/2       CrashLoopBackOff   4          2m
persistent-volume-setup-cwpml   0/1       Completed          0          5m
router-1-slhlt                  1/1       Running            0          5m
~/.../openshift/origin → oc rollout cancel dc/docker-registry
deploymentconfig "docker-registry" already cancelled
No rollout is in progress (latest rollout #3 running (cancelling) 2 minutes ago)