Maybe the BIOS versions are different on the two machines if they are the same models. Different disc controllers or modes set up? Different NICs or other add on cards? 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 at prgmr.com > <mailto:srn at 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 and a 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. > > --Sarah -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20170329/c5d5ff72/attachment-0006.sig>