Comment 0 for bug 1692092

Revision history for this message
Brian Murray (brian-murray) wrote : not possible to upgrade from Xenial to Zesty

With the changes to update-manager in bug 1497024 it should be possible to upgrade from Ubuntu 16.04 to 17.04 (provided 16.10 is End of Life). While update-manager will download the zesty.tar.gz file it will not run and will instead say "An upgrade from 'X' to 'Z' is not supported with this tool." This is because ubuntu-release-upgrader has not been configured to upgrade from 16.04 to 17.04.

[Test Case]
1) Run do-release-upgrade (notice it download yakkety.tar.gz)
2) Set yakkety to unsupported in ~/.cache/update-manager-core/meta-release
3) Run do-release-upgrade again (notice it download zesty.tar.gz)

With the dist-upgrader tarball currently available you'll receive an error message about the upgrade path being unsupported. With the version of the dist-upgrader tarball in proposed (accessible by running do-release-upgrade -p) you will not receive that error message.

[Regression Potential]
It's possible the upgrade won't work for people, but I'll be watching out for issues and its better than we resolve upgrade issues now rather then when people are upgrading from LTS to LTS.