Rescue of volume based instance fails silently due to wrong API version

[Christian Rohmann]

Even though the feature is noted in the release notes of the Ussuri release (https://docs.openstack.org/releasenotes/nova/ussuri.html#relnotes-21-0-0-stable-ussuri) a volume based instance cannot be "rescued" (https://docs.openstack.org/nova/ussuri/user/rescue.html) via the Horizon Dashboard.
After clicking "rescue" the action silently fails and nothing happens.

I believe this is simply due to the Nova API version used not being recent enough.
According to https://github.com/openstack/nova/commit/ff3fd846362dfaa7d880dca83f1482b7a8ce80c5 at least version 2.87 is required and I was able to reproduce the issue using the CLI:

1) no version selected

# openstack server rescue --image $IMAGE_ID --password abc123 $INSTANCE_ID

Instance $INSTANCE_ID cannot be rescued: Cannot rescue a volume-backed instance (HTTP 400) (Request-ID: req-8608b9a3-2a10-40ce-a76e-21c93c3bbd8b)

2) selected API version 2.87

# openstack --os-compute-api-version 2.87 server rescue -image $IMAGE_ID --password abc123 $INSTANCE_ID

-> success.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/horizon/+/857184

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/horizon/+/857184
Committed: https://opendev.org/openstack/horizon/commit/05dd53a3cf3e1ced265d23d1c02765abd468a483
Submitter: "Zuul (22348)"
Branch: master

commit 05dd53a3cf3e1ced265d23d1c02765abd468a483
Author: Jan Hartkopf <email address hidden>
Date: Mon Sep 12 15:04:50 2022 +0200

    Fix rescue of volume-based instances

    Rescue of volume-based instances is supported since Nova
    microversion 2.87.
    However, Horizon does not use this microversion when requesting
    rescue of any instances, causing a Nova exception for volume-
    based ones.

    The patch fixes this by explicitly setting the required
    microversion.

    Closes-Bug: #1941744
    Signed-off-by: Jan Hartkopf <email address hidden>
    Change-Id: Ic0cdfd326475882f839fd218cd7b4bfa62a2a76b

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/zed
Review: https://review.opendev.org/c/openstack/horizon/+/862682

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/yoga
Review: https://review.opendev.org/c/openstack/horizon/+/862683

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/xena
Review: https://review.opendev.org/c/openstack/horizon/+/862684

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/horizon/+/862682
Committed: https://opendev.org/openstack/horizon/commit/761e466e7a0628ae939dd654152f615732ad4f79
Submitter: "Zuul (22348)"
Branch: stable/zed

commit 761e466e7a0628ae939dd654152f615732ad4f79
Author: Jan Hartkopf <email address hidden>
Date: Mon Sep 12 15:04:50 2022 +0200

    Fix rescue of volume-based instances

    Rescue of volume-based instances is supported since Nova
    microversion 2.87.
    However, Horizon does not use this microversion when requesting
    rescue of any instances, causing a Nova exception for volume-
    based ones.

    The patch fixes this by explicitly setting the required
    microversion.

    Closes-Bug: #1941744
    Signed-off-by: Jan Hartkopf <email address hidden>
    Change-Id: Ic0cdfd326475882f839fd218cd7b4bfa62a2a76b
    (cherry picked from commit 05dd53a3cf3e1ced265d23d1c02765abd468a483)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 23.1.0 release.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/horizon/+/862684
Committed: https://opendev.org/openstack/horizon/commit/0498793136b2f219decafdeeefd76891ef4fee25
Submitter: "Zuul (22348)"
Branch: stable/xena

commit 0498793136b2f219decafdeeefd76891ef4fee25
Author: Jan Hartkopf <email address hidden>
Date: Mon Sep 12 15:04:50 2022 +0200

    Fix rescue of volume-based instances

    Rescue of volume-based instances is supported since Nova
    microversion 2.87.
    However, Horizon does not use this microversion when requesting
    rescue of any instances, causing a Nova exception for volume-
    based ones.

    The patch fixes this by explicitly setting the required
    microversion.

    Closes-Bug: #1941744
    Signed-off-by: Jan Hartkopf <email address hidden>
    Change-Id: Ic0cdfd326475882f839fd218cd7b4bfa62a2a76b
    (cherry picked from commit 05dd53a3cf3e1ced265d23d1c02765abd468a483)
    (cherry picked from commit 761e466e7a0628ae939dd654152f615732ad4f79)
    (cherry picked from commit 1cd150cdc568e81eb2ead8819d5559cf3e23a296)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/horizon/+/862683
Committed: https://opendev.org/openstack/horizon/commit/1cd150cdc568e81eb2ead8819d5559cf3e23a296
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit 1cd150cdc568e81eb2ead8819d5559cf3e23a296
Author: Jan Hartkopf <email address hidden>
Date: Mon Sep 12 15:04:50 2022 +0200

    Fix rescue of volume-based instances

    Rescue of volume-based instances is supported since Nova
    microversion 2.87.
    However, Horizon does not use this microversion when requesting
    rescue of any instances, causing a Nova exception for volume-
    based ones.

    The patch fixes this by explicitly setting the required
    microversion.

    Closes-Bug: #1941744
    Signed-off-by: Jan Hartkopf <email address hidden>
    Change-Id: Ic0cdfd326475882f839fd218cd7b4bfa62a2a76b
    (cherry picked from commit 05dd53a3cf3e1ced265d23d1c02765abd468a483)
    (cherry picked from commit 761e466e7a0628ae939dd654152f615732ad4f79)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 20.1.4 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 22.1.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 23.0.1 release.