[Bug 1725222] Re: do-release-upgrade from Ubuntu 14.04 to 16.04.1 performs unsupported upgrade from MySQL 5.5 to 5.7

[Robie Basak]

I believe this was discussed at the time with MySQL upstream. Although
the 5.5 to 5.7 upgrade isn't an officially supported upgrade path by
upstream, I think when we discussed it we concluded that it would be
fine for moving a default installation of MySQL 5.5 as packaged in 14.04
on to 16.04.

I don't think we can treat this as a bug unless you can demonstrate a
specific case that doesn't work. If you can provide a broken case, we
can consider what needs doing about it then. Until then, I don't think
we can expect to make any progress on a hypothetical problem.

** Changed in: mysql-5.7 (Ubuntu)
       Status: New => Incomplete

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1725222

Title:
  do-release-upgrade from Ubuntu 14.04 to 16.04.1 performs unsupported
  upgrade from MySQL 5.5 to 5.7

Status in Ubuntu Server Guide:
  Invalid
Status in mysql-5.7 package in Ubuntu:
  Incomplete
Status in ubuntu-release-upgrader package in Ubuntu:
  Incomplete

Bug description:
  Updating from Ubuntu 14.04 to Ubuntu 16.04.1 using do-release-upgrade
  will cause troubles because MySQL is upgraded from 5.5 to 5.7, that is
  an unsupported update path, as per MySQL official documentation.

  Your script should do these pre-checks and prevent upgrade, or
  automatically solve the issue before applying upgrade.

  PS: the solution is to upgrade MySQL in two steps, first from 5.5 to
  5.6 then from 5.6 to 5.7.

To manage notifications about this bug go to:
https://bugs.launchpad.net/serverguide/+bug/1725222/+subscriptions