Document manual upgrades from virt-manager with a Persistence
Originally created by @sajolida on #17187 (Redmine)
As per https://lists.autistici.org/message/20191023.005151.d943ba2f.en.html.
Originally created by @sajolida on #17187 (Redmine)
As per https://lists.autistici.org/message/20191023.005151.d943ba2f.en.html.