Description of problem: Currently the admin portal will allow CPU hotplug to any VM while when trying to execute the change it will fail with error if the OS is not supported: Failed to hot set number of CPUS to VM vm2. Underlying error message: Hot un-plugging a CPU is not supported for the guest OS Other OS and architecture x86_64 Version-Release number of selected component (if applicable): ovirt-engine-4.1.0.4-1.el7 How reproducible: always Steps to Reproduce: 1. create VM with 2 CPUs and set operating system to "Other OS" in the UI 2. start VM 3. edit VM and set CPU to 1, click OK Actual results: "Changes that can be applied immediately" screen is displayed when OK is pressed, unplug fails immediately due to OS type set in UI: "Failed to hot set number of CPUS to VM vm2. Underlying error message: Hot un-plugging a CPU is not supported for the guest OS Other OS and architecture x86_64" Expected results: "Changes that require Virtual Machine restart" screen is displayed hot unplug not attempted Additional info:
There's no feasible infra to be able to do that within edit vm dialog. It would require changing the way hotplug/unplug is exposed to users Not worth the effort I'll keep the bug around for a while if someone wants to work on that, but it's unlikely...
no one volunteered, closing the bug then