Volume does not detach from instance

Solution In Progress - Updated -

Issue

  • volume stuck detaching
  • volume fails to detach

  • volume stuck detaching then goes back to in-use

  • compute-0_nova-compute.log

2018-02-20 10:58:31.840 753316 ERROR oslo_messaging.rpc.server     device=alternative_device_name, reason=reason)
2018-02-20 10:58:31.840 753316 ERROR oslo_messaging.rpc.server DeviceDetachFailed: Device detach failed for vdb: Unable to detach from guest transient domain.
2018-02-20 10:58:31.840 753316 ERROR oslo_messaging.rpc.server

Environment

  • Red Hat OpenStack Platform 10
  • Red Hat OpenStack Platform 13

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