Re: Weird qemu-nvmm problem

[Yorick Hardy <yorickhardy%gmail.com@localhost>]

On 2020-03-09, Chavdar Ivanov wrote:
> On Mon, 9 Mar 2020 at 19:52, Yorick Hardy <yorickhardy%gmail.com@localhost> wrote:
> >
> > Dear Chavdar,
> >
> > On 2020-03-08, Chavdar Ivanov wrote:
> > > Hi,
> > >
> > > On a -current (from today, but has happened before), when running a
> > > particular nvmm guest (32-bit Windows 10), usually when it is busy
> > > going through some updates, the host gets into a weird state. I have
> > > an ssh connection to it with several tmux panes open; I can switch
> > > between them, so the connection to the host is still ok, but in the
> > > same time the host does not answer to pings anymore; none of the tmux
> > > panes themselves accepts any input, with the exception of the one I am
> > > running the qemu client in; I can interrupt it and after that the host
> > > comes into normal state. When this happens, I get
> > >
> > > [  7444.602404] coretemp3: workqueue busy: updates stopped
> > > [  7474.614306] coretemp0: workqueue busy: updates stopped
> > > [  7474.614306] coretemp1: workqueue busy: updates stopped
> > > [  7474.614306] coretemp2: workqueue busy: updates stopped
> > > [ 23591.005414] acpitz4: workqueue busy: updates stopped
> > > [ 23591.005414] acpibat1: workqueue busy: updates stopped
> > >
> > > The machine is not doing anything else at the moment, the temperatures
> > > are within the expected range.
> > >
> > > Any clues?
> > >
> > > Chavdar
> >
> > Unfortunately, "me too". But I did not manage to see the logs or
> > track down the change which caused this behaviour (sorry).
> 
> At least I can see it is not something specific to my host and installation.
> 
> >
> > I had panics for a while (in January?) when using nvmm, and once
> > that was fixed the "stalling" behaviour started.
> 
> BTW, the hangs happen with my Windows guests; I tried today a couple
> of Linux ones, they ran without a problem.
> 
> I just tried also an OmniOS guest; this one used to work fine on the
> 29th of February, when I booted and updated itl today it did not
> complete the boot at all and I had to restart the host as it was
> unresponsive.

That was my experience too (Windows guests hang, but linux guests
do not seem to hang).

-- 
Kind regards,

Yorick Hardy