So interesting and challenging too, IT seems to Xen compatibility to Dell board BIOS related.
I have Dell R710 and R7200 with same Xen version, but the outcome is completely different, that R720 is slow in performance and reboot too.
xlord
On Apr 5, 2017 23:42, "PJ Welsh" pjwelsh@gmail.com wrote:
On Tue, Apr 4, 2017 at 11:13 AM, Johnny Hughes johnny@centos.org wrote:
On 03/28/2017 04:55 PM, PJ Welsh wrote:
The mystery gets more interesting... I now have a CentOS 7.3 Dell R710 server doing the exact same thing of rebooting immediately after the Xen kernel load. Just to note this is a second system and not just the first system with an update. I hope I'm not introducing something odd. They only "interesting" thing I have done for historical reasons is to change the following /etc/sysconfig/grub line: GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=6G,max:8G cpuinfo com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all" But I've done that on other servers without issue. In fact I have a Dell R710 that DOES work with CentOS 7 and the new kernel... so confused.
On Fri, Mar 24, 2017 at 1:44 PM, Sarah Newman <srn@prgmr.com mailto:srn@prgmr.com> wrote:
On 03/24/2017 11:35 AM, PJ Welsh wrote: > As a follow up I was able to test fresh install on Dell R710 anda Dell
> R620 with success on CentOS 7.3 without issue on the new kernel.My new
> plan will be to just move this C6 to one of the C7 I just created. That sounds like a compiler problem, since I think the C6 and C7 kernels are built from the same source.OK, I have a new CentOS-6 4.9.20-26 kernel here for testing:
https://people.centos.org/hughesjr/4.9.16/6/x86_64/
I am building the el7 one right now as well, it will be at:
https://people.centos.org/hughesjr/4.9.16/7/x86_64/
George and I found some issues with the 4.9.x config files for the xen kernel. Hopefully this one is much more stable as it has many changes from the fedora/rhel type configs now (what is built into the kernel, what is loaded as a kernel module, etc.)
Please test these kernels so we can get them released.
Thanks, Johnny Hughes
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CentOS-6 4.9.20-26 kernel exhibits the same constant kernel-start-then-reboot issue when booting under the "CentOS Linux, with Xen hypervisor" grub2 menu option. However, it *does* properly boot under the "CentOS Linux (4.9.20-25.el7.x86_64) 7 (Core)" grub2 menu option!
A semi-close look at the /etc/grub2.cfg yields no discernible difference between a properly functional Dell R620 and the non-properly functioning Dell R710.
Sorry, I had been distracted with other issues and have not yet submitted information to the xen-devel group yet.
Thanks PJ
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