n-api should reject requests to detach a volume when the compute is down

Bug #1909120 reported by Lee Yarwood on 2020-12-23
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OpenStack Compute (nova)
Lee Yarwood

Bug Description

At present requests to detach volumes from instances on down computes are accepted by n-api but will never be acted upon if the n-cpu service hosting the instance is down.

n-api should reject such requests with a simple 409 HTTP conflict.

Steps to reproduce
* Attempt to detach a volume from an instance residing on a down compute.

Expected result
Request rejected by n-api

Actual result
Request accepted but never completed

1. Exact version of OpenStack you are running. See the following
  list for all releases: http://docs.openstack.org/releases/


2. Which hypervisor did you use?
   (For example: Libvirt + KVM, Libvirt + XEN, Hyper-V, PowerKVM, ...)
   What's the version of that?

   libvirt + QEMU/KVM

2. Which storage type did you use?
   (For example: Ceph, LVM, GPFS, ...)
   What's the version of that?


3. Which networking type did you use?
   (For example: nova-network, Neutron with OpenVSwitch, ...)


Changed in nova:
status: New → Confirmed
importance: Undecided → Medium
sean mooney (sean-k-mooney) wrote :

updating this to fix release sicne https://review.opendev.org/c/openstack/nova/+/768352 is merged on master

backports have been propsoed to u and v so i have add those and i also added train since i assume we want this in Train downstream?

if this need to go back futher then feel free to add those too but i tred to pick a resonable set of branches.

Changed in nova:
status: Confirmed → Fix Released

This issue was fixed in the openstack/nova release candidate.

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