Bug 1449607

Summary:	RFE: Rescue a volume backed instance
Product:	Red Hat OpenStack	Reporter:	Chaitanya Shastri <cshastri>
Component:	openstack-nova	Assignee:	Lee Yarwood <lyarwood>
Status:	CLOSED CURRENTRELEASE	QA Contact:	OSP DFG:Compute <osp-dfg-compute>
Severity:	medium	Docs Contact:
Priority:	low
Version:	9.0 (Mitaka)	CC:	alifshit, aludwar, apverma, astupnik, dasmith, egallen, eglynn, jhakimra, jmelvin, jparker, kchamart, ldenny, lyarwood, mariel, sbauza, sclewis, sgordon, spower, sputhenp, srevivo, stephenfin, vromanso
Target Milestone:	ga	Keywords:	FutureFeature, Patch, Triaged
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	openstack-nova-21.1.0-0.20200425164546.347d656.el8ost	Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-06-28 17:59:03 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:	Ussuri
Embargoed:

Description Chaitanya Shastri 2017-05-10 11:05:10 UTC

Description of problem:
Do we support rescuing a volume backed instance in OSP9?

I found a similar upstream bug for Icehouse version and seems that it was not supported at that time: https://bugs.launchpad.net/nova/+bug/1453779

Is it possible to include this feature in future OSP releases? 

Version-Release number of selected component (if applicable):
OSP9

How reproducible:
Always

Steps to Reproduce:
1. Boot an instance from a volume.
2. Try to rescue it using 'nova rescue <id>'

Actual results:
Cannot rescue a volume backed instance

Expected results:
Should be able to rescue volume backed instance

Comment 1 Matthew Booth 2017-05-19 09:17:04 UTC

No, this isn't supported. There is work upstream to make fundamental changes to the way rescue works in the libvirt driver, but it is not currently on the upstream priority list. I'm going to mark this as an RFE.

Comment 2 Matthew Booth 2017-08-02 17:10:43 UTC

Lee's original patch series: https://review.openstack.org/#/q/project:openstack/nova+branch:master+topic:bp/virt-rescue-stable-disk-devices

Comment 3 Lee Yarwood 2017-09-15 21:35:01 UTC

*** Bug 1492226 has been marked as a duplicate of this bug. ***

Comment 8 Alex Stupnikov 2019-05-16 09:20:06 UTC

Is it possible to triage this RFE?

BR, Alex.

Comment 9 Alex Stupnikov 2019-05-16 09:21:40 UTC

There is an upstream BP: https://blueprints.launchpad.net/nova/+spec/volume-backed-server-rescue

Comment 10 ldenny 2020-05-18 01:00:57 UTC

Hi Team,

Are there plans to backport this to OSP16?

Thank you.

Comment 11 Lee Yarwood 2020-05-18 09:27:13 UTC

(In reply to ldenny from comment #10)
> Hi Team,
> 
> Are there plans to backport this to OSP16?
> 
> Thank you.

No, we unfortunately can't backport this to OSP16 given the required API changes.

Comment 16 spower 2022-07-05 15:06:19 UTC

TRAC team have stated there will be no RFEs in zstreams for OSP 17.0 so moving this to 17.1. Any questions please contact rhos-trac.

Comment 19 Artom Lifshitz 2022-08-23 16:27:32 UTC

This will need an enhancement doctext once this graduates out of tech preview (https://bugzilla.redhat.com/show_bug.cgi?id=2120743)

Comment 22 Artom Lifshitz 2023-06-28 17:59:03 UTC

Closing as CURRENTRELEASE. The code is present in 17.0 and 17.1, but no further QE work will be performed due to lack of capacity. This puts this RFE into the "implicitly supported" category like most Nova features that originate in the community and that appear in our OSP code without much involvement from Red Hat engineers. If a significant enough bug ends up being reported for this feature, we will re-evaluate the QE situation.

There will, however, be documentation written for this feature: https://issues.redhat.com/browse/RHOSPDOC-1275.