I’ve an openstack server with no ephemeral volume, only two permanent volumes.
One of them is a (bootable) root volume. I choose this setup for the very purpose of extending this volume.
Now I want to resize the root volume but I can not.
Whether I shut-off or shelved the server, it seems impossible to detach this [persistent] volume storage, even though https://specs.openstack.org/openstack/nova-specs/specs/stein/approved/detach-boot-volume.html says it is.
When instance is shelved, attempts to detach the volume results in a 409 error-code.