return an error if the volume ID already in use#303

Merged

k8s-ci-robot merged 1 commit intokubernetes-sigs:masterfrom

hantaowang:error-on-concurrent-vol

Jun 24, 2019

Commits on Jun 21, 2019

paralleize node operations by returning an error if the volume is in use
Hantao (Will) Wang
committed