Comment 4 for bug 1570580

Could you please explain exact user scenarios and user stories here. Is this just a hypothetical use-case / testing or some real scenarios that you have in mind.

In Ubuntu and Debian, in general we do not activate existing volume groups and volumes, because the idea is that in general one installs things afresh and doesn't reuse/resize existing things. Especially not LVM groups. We even opportunistically wipe lvm metadata off the drives before guided full disk install.

There is no current support in e.g. debian and ubuntu, to reuse lvm groups and volumes per se.

There are a couple things we could do, but to get this right we'd want to know why or how you are envisioning this to be used. In general, no users share a volume group across multiple installs. So in various scenarios, where one does and doesn't have existing volume groups, when would you want to activate them and not, and why. And if we do activate an existing volume group, how do you see it booting and where would the zipl installation go? Do you expect it to install with guided partition? and how? Please elaborate motivation behind activating existing volume group from base principals.