[CentOS-virt] Fwd: Xen4CentOS kernel panic on dom0 reboot

Phillippe Welsh pjwelsh at gmail.com
Thu Mar 6 19:54:22 UTC 2014

Subject: Re: [CentOS-virt] Xen4CentOS kernel panic on dom0 reboot

On Wed, Mar 5, 2014 at 10:17 AM, David Vrabel <david.vrabel at citrix.com>wrote:

> > On 05/03/14 15:09, Karl Johnson wrote:
> > > I've been using Xen4CentOS for the last 3 months. It's working fine and
> > > dom0/domUs are stable but the server does a kernel panic when doing a
> > > reboot and the server has to be hard reset manually. It has kernel panic
> > on the 3 last reboot.
> >
> > There is a xenbus device still present and during shutdown it is trying
> > to set it to CLOSED but at this point xenstored isn't running and the
> > xenbus write stalls.
> >
> > Do you have VMs that are still running when you attempt a reboot?  If so
> > shutting them down will likely avoid this.
> >
> > Can you provide the output of xenstore-ls prior to attempting a reboot?
> >
> >
> >
> I though Xen init.d scripts would stop all of them before rebooting? Here's
> the output of chkconfig and xenstore-ls:
> http://pastebin.centos.org/8186/
> Thanks,
> Karl

I've got the "me-too" on the reboot hang issue for 2 different Dell R710's with xen-4.2.4-29.el6 and at least the kernels kernel-3.10.25-11.el6.centos.alt.x86_64 and kernel-3.10.23-11.el6.centos.alt.x86_64. I have not tried to reboot with the latest kernel-3.10.32-11.el6.centos.alt.x86_64 (if kernel even makes a difference). I *have* had dom0_mem=1024M,max:1024M option in place for all of them with only 6 VM's.

Any new suggestions?


More information about the CentOS-virt mailing list