KVM reboot fails

[Bill Davidsen]

Seann Clark wrote:
> All,
> 
>    I have been searching google for about two weeks, and looking over 
> everything else and I just can't figure this out, so I am polling on the 
> greater combined experience of the list to help me out with this.
> 
>    I have recently set up a virtual machine under KVM, which runs fine 
> on my system. The problem is, I can't reboot the system, nor can it 
> reboot itself. The Guest is running Windows 2008 Standard, and instead 
> of shutting down, or rebooting, after it is all done, it goes to a 
> BSOD,  which only happens when it is trying to reboot. If I try to do 
> this from virsh I get the error:
> 
> libvir: error : this function is not supported by the hypervisor: 
> virDomainReboot
> 
> 
> The host running the VM's is fedora 9 64 bit edition, that I haven't 
> gotten around to upgrading yet (patch management is EOL, or very close 
> to EOL, so upgrading is something I have been working on getting done) 
> virsh is version 0.5.1 and qemu-kvm is version 0.9.1 (kvm-65).
> 
> Outside of sucking it up and upgrading, which is what I figure would 
> need to be done, I would like to try to understand why this is having a 
> problem. If I can fix this, I can take my time and fix other issues that 
> are preventing me from upgrading properly instead of being rushed.
> 
You call this a KVM issue, but you mention libvir, indicating that you have the 
libvirt stuff in play. If you can try running the image from the cli qemu-kvm, 
you might find that it works. That's not a solution, but a data point for 
another post.

It is possible to download newer KVM code and upgrade only that, I have an FC6 
machine running a slightly more recent kernel I built from kernel.org code, with 
the kvm in use at fc10 time. That's not necessarily easier than "sucking it up 
and upgrading" particularly if you don't regularly build kernels. I have a 
device needing a closed source driver not available for recent kernels.

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot