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debugging KVM connections

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  debugging KVM connections Gary Dale <garydale@torfree.net> - 2017-01-01 23:10 +0100
    Re: debugging KVM connections Bob Weber <bobrweber@gmail.com> - 2017-01-01 23:20 +0100
      Re: debugging KVM connections Gary Dale <garydale@torfree.net> - 2017-01-01 23:40 +0100
        Re: debugging KVM connections Bob Weber <bobrweber@gmail.com> - 2017-01-02 00:10 +0100
          Re: debugging KVM connections Gary Dale <garydale@torfree.net> - 2017-01-02 01:00 +0100

#176227 — debugging KVM connections

I'm trying to track down a problem I'm having connecting to a remote 
virtual machine (that may or may not actually work). I have the router 
directing ssh traffic to the actual machine the virtual machine is 
running on.

Virt-manager is able to make the connection to the remote machine and 
shows the virtual machine. I can open the virtual machine but when I run 
it, the viewer closes. The virt-manager shows the virtual machine is 
running but I can't connect to it or shut it down. I can force a 
shutdown, that's all.

When I check the logs on my local machine and on the remote machine, I 
can't find anything related to the virtual machine or the viewer shutdown.

Any ideas on how I proceed?

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#176228

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I've had a similar problem after an xorg update on a VM running with the QXL
video display.   I downgrade the xorg packages and all is well.  If you are not
running X then this may not help you.  You might try another video display like
VMVGA.

Have you tried ssh into the VM after the viewer closes?

*...Bob*
On 01/01/2017 05:05 PM, Gary Dale wrote:
> I'm trying to track down a problem I'm having connecting to a remote virtual
> machine (that may or may not actually work). I have the router directing ssh
> traffic to the actual machine the virtual machine is running on.
>
> Virt-manager is able to make the connection to the remote machine and shows
> the virtual machine. I can open the virtual machine but when I run it, the
> viewer closes. The virt-manager shows the virtual machine is running but I
> can't connect to it or shut it down. I can force a shutdown, that's all.
>
> When I check the logs on my local machine and on the remote machine, I can't
> find anything related to the virtual machine or the viewer shutdown.
>
> Any ideas on how I proceed?
>
>

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#176229

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On 01/01/17 05:18 PM, Bob Weber wrote:
>
> I've had a similar problem after an xorg update on a VM running with 
> the QXL video display.   I downgrade the xorg packages and all is 
> well.  If you are not running X then this may not help you.  You might 
> try another video display like VMVGA.
>
> Have you tried ssh into the VM after the viewer closes?
>
> *...Bob*

It's a Windows 7 virtual machine. That precludes a lot of what I could try.

Any idea which logs might contain some mention of what went wrong? The 
Libvirt ones on both the local and remote machines have nothing around 
the time I'm connecting.

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#176231

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Windows is another story.  You can't just change video cards since you might
trigger Windows wanting to be authorized again. 


I found logs for each VM in /var/log/libvirt/qemu.  Is that where you were looking?



*...Bob*
On 01/01/2017 05:36 PM, Gary Dale wrote:
> On 01/01/17 05:18 PM, Bob Weber wrote:
>>
>> I've had a similar problem after an xorg update on a VM running with the QXL
>> video display.   I downgrade the xorg packages and all is well.  If you are
>> not running X then this may not help you.  You might try another video
>> display like VMVGA.
>>
>> Have you tried ssh into the VM after the viewer closes?
>>
>> *...Bob*
>
> It's a Windows 7 virtual machine. That precludes a lot of what I could try.
>
> Any idea which logs might contain some mention of what went wrong? The Libvirt
> ones on both the local and remote machines have nothing around the time I'm
> connecting.
>

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#176233

On 01/01/17 06:09 PM, Bob Weber wrote:
>
> Windows is another story.  You can't just change video cards since you 
> might trigger Windows wanting to be authorized again.
>
>
> I found logs for each VM in /var/log/libvirt/qemu.  Is that where you 
> were looking?
>
>
>
>
Yes. The log on the remote host is basically just starting up and 
shutting down messages. The local log is empty.

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