Note: This is a beta release of Red Hat Bugzilla 5.0. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Also email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback here.

Bug 1694551

Summary: [RFE] Support multiple stores of Glance for snapshot and backup API
Product: Red Hat OpenStack Reporter: Abhishek Kekane <akekane>
Component: openstack-novaAssignee: Abhishek Kekane <akekane>
Status: CLOSED WONTFIX QA Contact: nova-maint
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16.0 (T)CC: dansmith, eglynn, jhakimra, kchamart, mbooth, rbryant, sbauza, sgordon, vromanso
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-04-04 14:59:48 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 Abhishek Kekane 2019-04-01 05:16:42 UTC
Description of problem:

Recently in Rocky, Glance has added multiple backend as a EXPERIMENTAL feature. This way opearator can configure more than one of similar or different kind of backends and use one as a default backend. If backend is not specified at the time of uploading the image then the image will be stored in default backend.

In case of nova snapshot if multiple backend is configured then the snapshot image will be uploaded to default backend. This will not cause any issue unless nova is using ceph backend and glance has ceph backend as well but default backend is not ceph. This will affect nova's ability to use ceph backend for uploading snapshots in more efficient way. Same will be applicable to backup API.

Comment 1 Abhishek Kekane 2019-04-01 05:17:44 UTC
Upstream Blueprint: https://blueprints.launchpad.net/nova/+spec/support-glance-multiple-backend

Upstream Nova specs: https://review.openstack.org/#/c/641210/