Re: VM not booting anymore after Ubuntu upgrade

["André Weidemann" <Andre.Weidemann@web.de>]

On 04.08.2010 09:05, Avi Kivity wrote:
> On 08/04/2010 09:55 AM, André Weidemann wrote:
>> On 04.08.2010 08:48, Avi Kivity wrote:
>>> On 08/04/2010 08:39 AM, André Weidemann wrote:
>>>> Hi,
>>>> I recently upgraded my machine from Ubuntu 9.10 to 10.4 (x86_64).
>>>> Ever since I upgraded my machine I cannot get qemu-kvm to start again.
>>>>
>>>> I did not install the kvm package provided by Ubuntu. Instead I pulled
>>>> todays git from git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git and
>>>> ran ./configure && make -j6 && make install.
>>>> The configure output can be found here: http://pastebin.org/447003
>>>>
>>>> I am using the following command line to boot qemu-kvm:
>>>>
>>>> qemu-system-x86_64 -vnc :2 -k de -m 1024 -drive
>>>> file=/dev/sda,if=ide,index=0
>
> /dev/sda? is this not the host disk?

It is not the host disk. For some reason the Marvell Controller is found 
before the Intel ICH10. So the additional disk I put in for testing 
becomes sda.

>>>>
>>>> When connecting to the VNC console I only get a black screen.
>>>
>>> Does the monitor work? add -monitor stdio to the command line and type
>>> 'info registers' after you get the bla[nc]k screen.
>>>
>>
>> This is the monitor output:
>>
>> QEMU 0.13.50 monitor - type 'help' for more information
>> (qemu) info registers
>> EAX=00000010 EBX=00000000 ECX=00006e82 EDX=00b81013
>> ESI=f2010000 EDI=000c8c00 EBP=000e8550 ESP=00006e78
>> EIP=0008bc2f EFL=00010086 [--S--P-] CPL=3 II=0 A20=1 SMM=0 HLT=0
>> ES =0000 00000000 0000ffff 0000f300
>> CS =0000 00000000 0000ffff 0000f300
>
> This guest is very confused (what is it?)

This guest is a Windows 7 Pro 64bit. But it does not matter which image 
I try to boot. Even a PXE network boot results in the same behavior.

> Please enable ftrace:
>
> # mount -t debugfs debugfs /sys/kernel/debug
> # cd /sys/kernel/debug/tracing
> # echo 100000 > buffer_size_kb
> # echo kvm > set_event
> # echo 1 > tracing on
>
> run the guest and kill qemu immediately when you get to the blank screen
> (use SDL so you can see it immediately). Then post
> /sys/kernel/debug/trace somewhere.

I ran the trace and put the ouptut here:
http://ilpss8.dyndns.org/~andrew/qemu-kvm.trace.gz

Regards
  André