Description of problem: - While trying to install Windows 10 VM on RHEL 6.7 host with SandyBridge CPU type, the installation get stuck on Windows loading page (before it is possible to select installation parameters). - When decreasing cluster CPU type to Westmere, Windows 10 installation succeed to run. - Issue does not occur when using RHEL 7.2 and SandyBridge family (Windows 10 can be installed). - Also, after downgrading host to RHEL 6.7 and running the same VM was created on RHEL 7.2, VM is running properly. Version-Release number of selected component (if applicable): rhevm-3.5.6.2-0.1.el6ev (vt 18.2) libvirt-client-0.10.2-54.el6_7.2.x86_64 vdsm-4.16.29-1.el6ev.x86_64 qemu-kvm-rhev-0.12.1.2-2.479.el6_7.2.x86_64 sanlock-2.8-2.el6_5.x86_64 Host CPU type: Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz How reproducible: 100% Steps to Reproduce: Use 3.5.6 engine with RHEL 6.7 host. host CPU should be from SandyBridge microarchitecture. 1. Set cluster CPU type to SandyBridge. 2. Create VM, set OS to windows 10 VM, and add IDE disk to VM. 3. From run once option, select Windows 10 ISO and click ok. 3. Actual results: VM started, but gets stuck on loading page (before it is possible to start installation). Expected results: VM installation should start normally. Additional info: SOS report attached.
Created attachment 1094785 [details] rhevm log collector
we're going with a release note only. It affects only installation - running an installed W10 machine was verified working ok. Since this only happens on el6 and not on el7 it's not worth the effort to fix. doc text added