Re: KVM-58 -- existing VM just hangs with black screen

Richard W.M. Jones
2008-01-02T12:20:35Z

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Avi Kivity wrote:
> Richard W.M. Jones wrote:
>> I've just got an upgrade to KVM-58 as part of the latest Fedora.
>>
>> Unfortunately my existing VM (a Windows 2008 Server instance) no
>> longer boots. In fact it hardly gets anywhere at all. Immediately
>> after running qemu-kvm, I just get a black screen (no BIOS/boot
>> messages at all) and using 100% of CPU.
>>
>> No kernel messages. 'strace' indicates that qemu-kvm is doing a lot
>> of stuff (issuing lots of ioctl, gettimeofday, etc.).
>>
>> I can get to the qemu monitor. Are there any useful commands to issue?
>>
>> 'info blockstats' shows a single 512 byte read from ide-hd0,
>> presumably it has read the boot sector but for some reason cannot boot
>> from it.
>>
>> Any ideas on what I can do to debug this further?
>
> Can you identify which version of kvm introduced the regression?

kvm-56 for Fedora (from
http://koji.fedoraproject.org/koji/packageinfo?packageID=2261) *works*.

I will try to build an RPM based on KVM-57 and see what that does, but
at the moment it seems to be somewhere between KVM-56 and now.