[Pkg-xen-devel] how to get debugging output from dom0 kernel

[lee]

Ian Campbell <ijc at hellion.org.uk> writes:

> On Sun, 2014-06-15 at 11:03 +0200, lee wrote:
>> Hi,
>> 
>> how could I get better debugging output from the dom0 kernel?
>
> Either configure a serial console [0] or add "noreboot" to your
> *hypervisor* command line, so you can see (and perhaps
> transcribe/photograph) the crash before manually rebooting.

The server isn't rebooting automatically, it only gets stuck.  I still
have a monitor connected to it, so I can see what's printed to the
console.  But the output is scrolled off screen by subsequent messages
so that it's gone by the time I notice that it hangs.

If there was a way to disable the subsequent messages, I could take a
picture.  Perhaps I can get output from a serial console if I manage to
set that up ... or maybe I can actually make it crash instead of having
to wait ...


>
> [0] http://wiki.xen.org/wiki/Xen_Serial_Console
>
> Ian.
>
>
>
>

-- 
Knowledge is volatile and fluid.  Software is power.