unable to use multiple cores in Windows 7 VM

[jayarmstrong]

Hi,

I can't get our Windows 7 VM (Ultimate x64) to run with more than one vCPU enabled.

 

Installation attempts failed until I left it pinned to the last vCPU. Now, with a working, running installation, if I enable any other cores, it crashes while booting Windows or hangs while trying Windows startup repair. It's an i7-2600 which should have VT-d.

 

Please help! This has completely stalled our NVR project.

 

 <vcpu placement='static'>1</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='7'/>
  </cputune>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-i440fx-3.0'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/2b9ece6b-b771-dd20-11ed-3106f614c562_VARS-pure-efi.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      <vendor_id state='on' value='none'/>
    </hyperv>
  </features>
  <cpu mode='host-passthrough' check='none'>
    <topology sockets='1' cores='1' threads='1'/>
  </cpu>

 

[jayarmstrong]

bump!

[boosted06]

bump, similar issue...

[Kacper]

Thats why to virtualize seriously use xenserver. Unraid and proxmox are both faulty when it comes to windows VMs. Or go for win10 which seams to work in unraid.