Comment 1 for bug 1990825

You didn't say where this was happening: Controller, Compute, or HCI node.

I'm going to assume this is either Controller or HCI node where you have at least 2 of the following services running: cinder-volume, cinder-backup, glance using cinder as backend, nova-compute.

If that's the case I believe this is a race condition issue that should have been fixed on bug #1947370, though the code also requires setting the same lock path location for the different services for the fix to work.

Going to proceed to close the bug as a duplicate of that one.