[Bug 1490071] Re: MySQL 5.5/5.6 detects /var/lib/mysql/*.flag file and aborts installation

[Otto Kekäläinen]

I belive too that it is fundamentally not supported to downgrade or
crossgrade. From MySQL x.x to 5.5 to 5.6 users / database admins have
been responsible for backing up their data and upgrading the database
without having the option to go back. This is quite sensible and there
is no point in trying to copy /var/lib/mysql-5.5 to say
/var/lib/mysql-5.6 when most users have no intention to downgrade on the
same installation (they will do it via backups if they must), and there
is probably not diskspace to duplicate the database on each upgrade
either.

There is nothing we can do to enable downgrading in particular.

The bug is about the user experience: how users are notified what
happens and how dpkg is aborted into a broken state.

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to mysql-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1490071

Title:
  MySQL 5.5/5.6 detects /var/lib/mysql/*.flag file and aborts
  installation

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mysql-5.6/+bug/1490071/+subscriptions