Bug 1753055

Summary:	[OSP15] cinder-backup backup creation fails with NFS driver
Product:	Red Hat OpenStack	Reporter:	Alan Bishop <abishop>
Component:	openstack-cinder	Assignee:	Alan Bishop <abishop>
Status:	CLOSED EOL	QA Contact:	Tzach Shefi <tshefi>
Severity:	medium	Docs Contact:	Chuck Copello <ccopello>
Priority:	medium
Version:	15.0 (Stein)	CC:	abishop, astupnik, bshephar, cinder-bugs, dsedgmen, eharney, gkadam, pcaruana, ravsingh, tberry, tenobreg, tshefi
Target Milestone:	z3	Keywords:	Triaged, ZStream
Target Release:	15.0 (Stein)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: Cinder's NFS driver contained a bug that prevented the driver from creating a snapshot during volume clone operations, and cloned volumes are used when backing up cinder NFS volumes. Consequence: Cinder NFS volumes could not be backed up. Fix: Cinder's NFS driver bug has been fixed. Result: Backups of cinder NFS volumes work.	Story Points:	---
Clone Of:	1714805
Clones:	1753056 (view as bug list)		Environment:
Last Closed:	2020-09-21 10:31:33 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1714805, 1753056

Description Alan Bishop 2019-09-18 00:45:58 UTC

+++ This bug was initially created as a clone of Bug #1714805 +++

Description of problem:
When creating a snapshot of an active volume, the following error is observed:
Exception during message handling: AttributeError: 'Snapshot' object has no attribute '_context'


Version-Release number of selected component (if applicable):
openstack-cinder-12.0.4-3.el7ost.noarch 


How reproducible:
Every time a backup is attempted of an attached volume

Steps to Reproduce:
1. Create NFS backend for Cinder
2. Attach volume to Instance
3. Try to create snapshot of volume

Actual results:
oslo_messaging.rpc.server AttributeError: 'Snapshot' object has no attribute '_context'
Backup fails

Expected results:
Backup would succeed

Additional info:
This appears to be addressed by: https://review.opendev.org/#/c/570885/

Comment 2 Luigi Toscano 2020-09-21 10:31:33 UTC

OSP15 is EOL, but the fix lives in the newer releases (OSP16) and it has been backported to OSP13.