f2bd410c47
Adds the option to delete objects only from DB. Objects: - volumes - backups Change-Id: I7c8bc1ec1d4c1e74c1197930fe5e5667e26bfbd5 Blueprint: cinder-delete-from-db
2.5 KiB
Object deletion from DB without driver interaction
https://blueprints.launchpad.net/cinder/+spec/cinder-delete-from-db
Problem description
It's impossible to delete a volume, a backup or a snapshot when the service is not available. There's no way to bypass driver interaction.
Use Cases
Sometimes, OpenStack admins are pulling the plugs off some storage backends to use a new one. They realize later that they need to cleanup the various objects.
Proposed change
With cinder-manage, we will have a --db-only switch under the volume delete command. The snapshots are deleted in cascade. We will also implement backup subcommand that acts like the volume subcommand.
Alternatives
The only known workaround is to manually update multiple tables and set the status to 'deleted' to various objects.
Data model impact
None
REST API impact
None
Security impact
None
Active/Active HA impact
None
Notifications impact
None
Other end user impact
These commands will be available to operators:
cinder-manage volume delete [--db-only] <volume-id>
cinder-manage backup delete [--db-only] <backup-id>Performance Impact
None
Other deployer impact
None
Developer impact
None
Implementation
Assignee(s)
Primary assignee: David Vallee Delisle <dvd@redhat.com>
Work Items
The following changes will be done under cinder-manage command: * Add a --db-only switch to the volume delete command. * Add a backup delete subcommand with --db-only support. * The snapshots are deleted in cascade when a volume is deleted.
The following changes will be done in the rpcapis: * Add a db_only argument in the delete function
The following changes will be done in the manages: * Add a db_only argument in the delete function
Dependencies
None
Testing
Create tests to validate the delete volume and the delete backup are really deleting.
Documentation Impact
Man page for cinder-manage and any associated documentation will be updated.
References
None