[CentOS] KVM does not start anymore

[Bernd Bartmann]

Some more findings:

All other VMs on the host system still work fine (Win7 32, Win7 64, C6 64,
Ubuntu 64) only this C7 64 VM won't fully boot anymore.
During the boot process of the VM I'm getting this message in
/var/log/messages on the host system:

kernel: kvm [8346]: vcpu0 disabled perfctr wrmsr: 0xc1 data 0xffff

After that message appears the VM screen goes blank with just the blinking
cursor and nothing happens anymore.
Googling around for that message seems to indicate that this is just a
warning, but I could not find a real solution for this.

Now I'm stuck.

Best regards,
Bernd



On Fri, Oct 17, 2014 at 4:41 PM, Bernd Bartmann <bernd.bartmann at gmail.com>
wrote:

> Hi,
>
> I had a C7 virtual machine running on a C7 host for several weeks without
> any problems.
> Today I rebootet the host and now the virtual machine does not start
> anymore.
>
> I can see grub coming up and starting the kernel. After some seconds the
> last thing that is visble on the VM console is "ss perfctr msr (MSR c1
> is0)" then the screen goes blank with just a blinking cursor in the upper
> left corner. After that nothing happens anymore. The CPU load on the host
> is nearly 0%.
>
> Any ideas what could be the reason and how to solve this?
>
> Best regards,
> Bernd
>
>
>