Description of configuration options for backups

Configuration option = Default value	Description
[DEFAULT]
backup_api_class = cinder.backup.api.API	(StrOpt) The full class name of the volume backup API class
backup_compression_algorithm = zlib	(StrOpt) Compression algorithm (None to disable)
backup_driver = cinder.backup.drivers.swift	(StrOpt) Driver to use for backups.
backup_manager = cinder.backup.manager.BackupManager	(StrOpt) full class name for the Manager for volume backup
backup_metadata_version = 1	(IntOpt) Backup metadata version to be used when backing up volume metadata. If this number is bumped, make sure the service doing the restore supports the new version.
backup_name_template = backup-%s	(StrOpt) Template string to be used to generate backup names
backup_topic = cinder-backup	(StrOpt) the topic volume backup nodes listen on
snapshot_name_template = snapshot-%s	(StrOpt) Template string to be used to generate snapshot names
snapshot_same_host = True	(BoolOpt) Create volume from snapshot at the host where snapshot resides