Re: [Qemu-devel] After executing "savevm", the QEMU process is hanging

[Orit Wasserman <owasserm@redhat.com>]

Hi,
Paolo send a patch series today fixing a problem with savevm
http://www.mail-archive.com/qemu-devel@nongnu.org/msg165135.html
Can you check if it solves the issue?

Regards,
Orit

On 04/08/2013 04:39 PM, Liuji (Jeremy) wrote:
> Hi, Stefan
> 
> Thanks for your reply.
> 
> I have test the latest version of qemu.git/master(commit:9196dd411d580c27f85daa209ff9a501d719ebc0,2013-04-06). 
> But, this problem still exists.
> 
> This problem appears after the commit(500f0061d628b52220038939728f0d7aee634468, Use qemu_put_buffer_async for guest memory pages).
> But I'm not sure why this commit cause this problem.
> 
> I simplified the qemu-kvm command to the below:
> qemu-system-x86_64 --enable-kvm -m 1024 -smp 2 -boot c -drive file=/home/test/winxp.qcow2,
>                    if=virtio,index=0,format=qcow2 -monitor stdio -vnc 186.100.8.131:1
> 
> Best Regards,
> 
> Jeremy Liu
> 
>> Re: [Qemu-devel] After executing "savevm", the QEMU process is
>> hanging
>>
>> On Mon, Apr 01, 2013 at 11:45:13AM +0000, Liuji (Jeremy) wrote:
>>> Hello, everyone
>>>
>>> After executing the "savevm" command, the QEMU process is hanging.
>>> But in the v1.4.0, it's no problem.
>>>
>>> Host OS: Fedora 17 x86_64
>>> Qemu: the latest(2013-04-01)
>>> Quest OS: WinXP
>>>
>>> 1) Use the following command to start the VM:
>>>     qemu-kvm -enable-kvm -name winxp -M pc-0.15 -m 1024 -smp 2 -boot c
>> -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
>>>     -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive
>> file=/home/test/winxp.qcow2,if=virtio,index=0,format=qcow2
>>>     -net nic,model=virtio,macaddr=52:54:00:05:11:12 -monitor stdio
>> -chardev spicevmc,id=charchannel0,name=vdagent
>>>     -device
>> virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,na
>> me=com.redhat.spice.0 -chardev pty,id=charchannel1
>>>     -device
>> virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,na
>> me=arbitrary.virtio.serial.port.name -device usb-tablet,id=input0
>>>     -spice
>> port=3001,addr=186.100.8.131,disable-ticketing,plaintext-channel=main,plaint
>> ext-channel=playback,plaintext-channel=record,image-compression=auto_glz
>>>     -vga qxl -global qxl-vga.vram_size=67108864 -device
>> AC97,id=sound0,bus=pci.0,addr=0x4
>>> 2) Execute the "savevm" command in the qemu monitor.
>>>    After a long time (>20minute), the qemu process is still hanging.
>>>
>>> Who can give me some advice?
>>
>> Have you tried qemu.git/master?
>>
>> Once you find out which version works and which is broken, you can use
>> git-bisect(1) to find the commit that broke "savevm".
>>
>> Stefan
>