On Sat, Mar 08, 2014 at 09:09:07AM -0600, PJ Welsh wrote: > No, I have not followed those instructions yet. These were production > servers that I had scheduled firmware updates late Sunday evening. The > first time I though the error was a fluke and only began to research it > after the second failure (and still no firmware updates due to the > power-cycle). I may try to sneak in a restart of one of the systems late > Sunday night US CT. > OK. > Still not sure why the running vm's would stop the reboot... The server > shows that it was suppose to be restarting. I have had a similar stuck on > restarting message (minus all the umount errors) on some Dell T105's > running CentOS 6.5 and the "reboot=pci" grub.conf kernel option is what > ended up working for them. I have not tested that possible option yet, > either since that would take 2 reboots to put into place. > Yeah, it's worth testing both, to figure out what's wrong. -- Pasi > On Fri, Mar 7, 2014 at 10:43 PM, Pasi Kärkkäinen <[1]pasik at iki.fi> wrote: > > On Thu, Mar 06, 2014 at 01:54:22PM -0600, Phillippe Welsh wrote: > > > > Subject: Re: [CentOS-virt] Xen4CentOS kernel panic on dom0 reboot > > > > On Wed, Mar 5, 2014 at 10:17 AM, David Vrabel <david.vrabel at > [2]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: > > > > > > [3]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-[4]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? > > > > So did you make sure all the VMs are shut down before trying to reboot > dom0? > > -- Pasi > > _______________________________________________ > CentOS-virt mailing list > [5]CentOS-virt at centos.org > [6]http://lists.centos.org/mailman/listinfo/centos-virt > > References > > Visible links > 1. mailto:pasik at iki.fi > 2. http://citrix.com/ > 3. http://pastebin.centos.org/8186/ > 4. file:///tmp/tel:3.10.25-11 > 5. mailto:CentOS-virt at centos.org > 6. http://lists.centos.org/mailman/listinfo/centos-virt > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt