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

["Richard W.M. Jones" <rjones-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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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.

Rich.

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