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Unfortunately crossgrading from Oracle MySQL 5.6 to MariaDB 10.0 makes changes to the database in /var/lib/mysql/ that cannot be undone automatically, and we don't currently have a technical solution to this. You will need to fix this situation up manually. IMHO, this is an interaction between MySQL and MariaDB that I think needs to be undone. MariaDB shouldn't write to /var/lib/mysql/ if it is going to make incompatible changes there. Instead it should use /var/lib/mariadb/ or something. I have proposed a solution previously on the pkg-mysql-maint list, but we have been working on other requirements to make a proper fix work first. We're not quite finished with the transition yet (mostly waiting on me), but let's keep this bug open to track this item. ** Summary changed: - package mysql-server-5.6 5.6.25-0ubuntu0.15.04.1 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1 + MariaDB writes to /var/lib/mysql after crossgrade, preventing users from reverting to MySQL -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1490071 Title: MariaDB writes to /var/lib/mysql after crossgrade, preventing users from reverting to MySQL To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.6/+bug/1490071/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
