openstack cinder-backup integration

[jsm222]

Hi

FYI I did some work here to wrap benji into the openstack cinder-backup service with a custom backup driver. https://github.com/jsm222/cinder-backup-benji-driver.
To test on devstack use
cinder.conf:

backup_driver =  cinder.backup.drivers.benjidriver.BenjiBackupDriver

the rest of its options can be read in the source for now. benji in an venv created with --system-site-packages should work at least on devstack. Place it in /opt/stack/cinder/cinder/backup/drivers for default devstack...

[elemental-lf]

Thank you for letting us know! Do you have any plans to flesh this out some more and maintain it in the future? If that is the case, I'd add a link to the documentation when you think it's ready for that.

It might be useful to add some custom labels with OpenStack specific metadata to the backups if that information is available. That way users could filter on this metadata when using benji ls or they could use it to implement different retention policies based on it for example.