The clone plugin is subject to these limitations:
Prior to MySQL 8.0.27, DDL on the donor and recipient, including
TRUNCATE TABLE, is not permitted during a cloning operation. This limitation should be considered when selecting data sources. A workaround is to use dedicated donor instances, which can accommodate DDL operations being blocked while data is cloned. Concurrent DML is permitted.
From MySQL 8.0.27, concurrent DDL is permitted on the donor by default. Support for concurrent DDL on the donor is controlled by the
clone_block_ddlvariable. See Section 188.8.131.52, “Cloning and Concurrent DDL”.
An instance cannot be cloned from a different MySQL server version or release. The donor and recipient must have exactly the same MySQL server version and release. For example, you cannot clone between MySQL 5.7 and MySQL 8.0, or between MySQL 8.0.19 and MySQL 8.0.20. The clone plugin is only supported in MySQL 8.0.17 and higher.
Only a single MySQL instance can be cloned at a time. Cloning multiple MySQL instances in a single cloning operation is not supported.
The clone plugin does not support cloning of MySQL server configurations. The recipient MySQL server instance retains its configuration, including persisted system variable settings (see Section 184.108.40.206, “Persisted System Variables”.)
The clone plugin does not support cloning of binary logs.
Connecting to the donor MySQL server instance through MySQL Router is not supported.
Local cloning operations do not support cloning of general tablespaces that were created with an absolute path. A cloned tablespace file with the same path as the source tablespace file would cause a conflict.