I'm learning to use the KVM on CentOS 7 right now. For some reason Red Hat decided to disable the possibility of installing an OS on a virtual machine from a CD\DVD-Rom in RHEL 7. When creating a new VM through the VM Manager the "Use CDROM or DVD" option is greyed out and unavailable and the hint says "Physical CDROM passthrough not supported with this hypervisor". I found a couple of bug descriptions related to the issue, but all of them have to do with ramifications of CDROM passthrough disabling and neither describe the reason of why it was disabled in the first place. The bugs are from Red Hat's bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1072294 https://bugzilla.redhat.com/show_bug.cgi?id=1072610
Both of them refer to 760885 bug that apparently describes the reason. Unfortunately it isn't made public and access is denied even after registration.
Can anyone shed a light on why they have disabled such a seemingly useful feature? Is it a security or functionality issue?
Thank you, golem