Re: [Crash-utility] How do debug the kdump kernel using a Xen dump-core file?
On Thu, Feb 10, Dave Anderson wrote:
----- Original Message -----
> Hello,
>
> 'xm dump-core -L <domain>' generates a coredump of a Xen4 HVM guest,
and
> crash is able to poke around in this coredump.
> Thanks for that.
>
> But: How can I use crash to debug the crash/kdump kernel itself?
> I did a 'echo c > /proc/sysrq-trigger' and want to look at the crash
> kernel, not the normal kernel.
>
> Olaf
There is no facility for kdump'ing the secondary "kdump" kernel.
'xm dump-core' can appearently create the required core file while the
kdump kernel runs. Just crash can appearently not "switch over".
What should I modify in crash to let it work from a different "offset",
in other words: the memory reserved for the kdump kernel?
Olaf