Latest MariaDB release broken with experimental utf8mb4 guide

Upgrading mariaDB could brake the setup under certain circumstance.

Some users faced the situation that after upgrading their docker image, Nextcloud could not start anymore. A closer look showed that the mariaDB server was caught in a loop during start. After a discussion on github (, we noticed that the mariaDB utf8mb4 migration ( had to do with this.

It seems that the following settings got default and by this deprecated (

  • innodb_large_prefix = true
  • innodb_file_format = barracuda
  • innodb_file_per_table = 1

Nextcloud could give a hint on their documentation page.

Can you open a bug report on