Re: [Xen-users] 'xm list' states

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Petersson, Mats wrote:
> Anthony added:
>   
> > Petersson, Mats wrote:
> >     
> > > > 'c' (crashed) - The domain has crashed.
> > > > - If i do 'echo 1 > /proc/balloon' inside a unprivileged domain, i
> > > >   will get a kernel panic. But the state says nothing 
> > > >         
> > about that? The
> >     
> > > >   domain is definitively crashed, but the xm list command 
> > > >         
> > says nothing
> >     
> > > >   about that. Why?
> > > >     
> > > >         
> > > It may be that the crash isn't detected properly by hypervisor - I 
> > > think this may only work under some circumstances. I don't know for 
> > > sure, I'm just guessing here.
> > >   
> > >       
> > A crash is when the domain does something that it shouldn't 
> > supposed to do and the hypervisor has to kill it.  I imagine 
> > that an OOM condition in the guest will invoke the normal 
> > shutdown routines which would explain why the state isn't crashed.
> >     
> Thanks for the further explanations. 
>
> So the 'c' state is entereed when we call domain_crash_synchrnous() in
> the hypervisor, right?
>   
Yes, I should also add that libxc confuses things a bit by making the 
crashed state not appear to be the substate of shutdown (which it is).  
The kernel is able to crash itself by specifying SHUTDOWN_crash.
Regards,

Anthony Liguori

> --
> Mats
>
>
>   

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