[libvirt] Re: kexec/kdump of a kvm guest?
Mike Snitzer wrote:
On Thu, Jul 24, 2008 at 9:15 AM, Vivek Goyal
<vgoyal(a)redhat.com> wrote:
> On Thu, Jul 24, 2008 at 07:49:59AM -0400, Mike Snitzer wrote:
>
>> On Thu, Jul 24, 2008 at 4:39 AM, Alexander Graf <agraf(a)suse.de> wrote:
>>
I can do further research but welcome others' insight: do others have
advice on how best to collect a crashed kvm guest's core?
I don't know what you do in libvirt, but you can start a gdbstub in
QEMU, connect with gdb, and then have gdb dump out a core.
Regards,
Anthony Liguori
> It will be interesting to look at your results with 2.6.25.x
kernels with
> kvm module inserted. Currently I can't think what can possibly be wrong.
>
If the host's 2.6.25.4 kernel has both the kvm and kvm-intel modules
loaded kexec/kdump does _not_ work (simply hangs the system). If I
only have the kvm module loaded kexec/kdump works as expected
(likewise if no kvm modules are loaded at all). So it would appear
that kvm-intel and kexec are definitely mutually exclusive at the
moment (at least on both 2.6.22.x and 2.6.25.x).
Mike
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