[releng] Issue #6967: new mock and systemd-nspawn

[Kevin Fenzi]

kevin reported a new issue against the project: `releng` that you are following:
``
mock in version 1.4.2 switched from using a traditional chroot to using a systemd-nspawn
container. 

I've updated the builders in staging to this version with the f26 reinstall. 

For normal packages it seems fine, but there are still a lot of unknowns. 

This ticket is to track those and decide what we want to do. 

Known issues: 

* kernel builders cannot use systemd-nspawn because they bindmount /var/run/pesign into
the chroot to allow access to the secure boot signing token. 

* compose channel builders may well not be able to use it because they create and use loop
devices. 

More testing may be needed. We may want to look at a koji patch to disable this so we
don't have to stay on an old unmaintained version of mock. 
``

To reply, visit the link below or just reply to this email
https://pagure.io/releng/issue/6967