Description of problem: Quite often one may want to rename or change the name of a guest. It would be nice if virt-manager supported this. Steps to Reproduce: 1. install a guest with incorrect name or maybe upgrade guest to newer version 2. realise name could have been better or want to change it Actual results: 2. can't do anything about it easily except reinstall Expected results: 2. should be able to change the name at least in virt-manager but better on disk to desired name.
You can actually, the guest just needs to be turned off. Details->Overview. Please reopen if that causes any problems.