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Re: [Qemu-devel] VM Hung issue


From: Umar Draz
Subject: Re: [Qemu-devel] VM Hung issue
Date: Wed, 18 Jan 2017 15:46:12 +0500

Hello Stefan,

Well yes, whenever vm hung, then there is nothing on vnc display, and
network of that vm is also down. I can not ping the vm that time.

Mostly my Windows VMs are affected due to this and sometime same thing
happen with Linux vm.

On Wed, Jan 18, 2017 at 3:29 PM, Stefan Hajnoczi <address@hidden> wrote:

> On Wed, Jan 18, 2017 at 01:51:26PM +0500, Umar Draz wrote:
> > I am running qemu-kvm on CentOS 7.3, I have few vms of CentOS and Windows
> > 2012 servers.
> >
> > Randomly they are hung, but the status of virtual machine keep running,
> vnc
> > and network not responding.
>
> It's not clear whether the guest is hung or QEMU is hung.
>
> Does the VNC client connect successfully?  If the client fails to
> connect then QEMU is hung.  If the client connects but the guest doesn't
> respond to input then only the guest is hanging.
>
> If QEMU is hung please post a backtrace:
>
>   # gstack $PID_OF_QEMU
>
> Stefan
>


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