# 2021-04-08-20:55:27+0800 migrate old backup datas to new db schema

- Cause: Address https://jira.tidbcloud.com/browse/DM-562
- Operation:

```
> kubectl port-forward svc/db-tidb -n nightly 4010:4000
> python addMigrateOldBackupCRName.py 127.0.0.1 $password
# set some cluster status from cleared to deleted
```

- Impact: The column `backup.old_backup_name` will be fulfilled with the right value
- Recovery operation: Drop the newly added column and rollback central
- Time window: 21:30~22:00 CST, April 8