How to configure Docker storage to use LVM thin pool on an OpenShift Node

Solution Unverified - Updated -

Issue

  • Docker will not start might be linked to the docker storage setup.
  • Docker shows error "Error starting daemon: error initializing graphdriver"
  • Openshift 3 node will not start because docker daemon fails to start.
  • I want to recreate my docker storage to you a thin pool logical volume.
  • At docker events it fails creating the sandbox pod with following message.
kubelet, node.example.com   Failed create pod sandbox: rpc error: code = Unknown desc = failed to create a sandbox for pod "mycontainer-9ggvh": Error response from daemon: devicemapper: Error running deviceCreate (createSnapDevice) dm_task_run failed

Environment

  • Red Hat Openshift Container Platform 3
  • Red Hat Atomic Host 7
  • Red Hat Enterprise Linux 7

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