On Maria URL: Percona XtraBackup Overview - MariaDB Knowledge Base
xtrabackup incompatibility cited.
What is Percona policy/statement on using xtrabackup against (say) Maria 10.4.12?
Is it just “unsupported” or are there increasing gotchas due to fork divergence?
Found a great post on Maria/MySQL on Percona site by Colin: https://www.percona.com/blog/2017/11/02/mysql-vs-mariadb-reality-check/
…this is 4 years old. Is an updated bakeoff/reality check available?
Needs focussed at present on backup and recovery.