Bug 1324943

Summary:	Provide a migration path between rbd ephemeral disk snapshot implementations in OSP 8 and 9
Product:	Red Hat OpenStack	Reporter:	Lee Yarwood <lyarwood>
Component:	python-glance-store	Assignee:	Cyril Roelandt <cyril>
Status:	CLOSED ERRATA	QA Contact:	Yogev Rabl <yrabl>
Severity:	high	Docs Contact:
Priority:	high
Version:	9.0 (Mitaka)	CC:	apevec, berrange, dasmith, egafford, eglynn, jjoyce, kchamart, lhh, lyarwood, mburns, pgrist, sbauza, sclewis, scohen, sferdjao, sgordon, srevivo, vromanso
Target Milestone:	ga	Keywords:	ZStream
Target Release:	9.0 (Mitaka)
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	python-glance-store-0.13.1-2.el7ost	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-08-24 12:58:17 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:

Description Lee Yarwood 2016-04-07 16:32:06 UTC

Description of problem:

Since RHEL OSP 5 both openstack-nova and python-glance-store have carried downstream-only patches implementing ceph based snapshotting of ephemeral disks. The following bugs tracked these patches into OSP 8 :

openstack-nova - Implement proper snapshotting for ceph-based ephemeral disks
https://bugzilla.redhat.com/show_bug.cgi?id=1311314

python-glance-store - support proper snapshotting for ceph-based ephemeral disks
https://bugzilla.redhat.com/show_bug.cgi?id=1318710

This implementation used Glance to ensure rbd snapshots and images were correctly cleaned up when they were no longer used. As of Mitaka a new implementation has been landed upstream that differs from the above :

libvirt: make snapshot use RBD snapshot/clone when available
https://review.openstack.org/#/c/205282/

This new implementation will also be present in OSP 9 and thus a migration path for OSP 8 users to this new implementation in OSP 9 will be required.

Version-Release number of selected component (if applicable):
RH OSP 9

How reproducible:
N/A

Steps to Reproduce:
N/A

Actual results:
N/A

Expected results:
N/A

Additional info:
N/A

Comment 2 Lee Yarwood 2016-06-15 16:55:32 UTC

Moving the bug to python-glancestore to forward port the downstream-only patch for it one final time into OSP 9.

Comment 9 errata-xmlrpc 2016-08-24 12:58:17 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-1757.html