Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

For some additional context, all my hardware is Supermicro and working great on 4.9.13 - 26. I have dom0_max_vcpus=2 because of issues I was having with deadlocked CPU cores before setting that option on 3.18 kernels. In my experience setting that value doesn't cause any detriment to the dom0,

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Hu, seems there are still stability issues on the "4.9.2-26.el7.x86_64", recently hear many issue related to Supermicro board! :-( Peace!!! On Fri, Apr 21, 2017 at 9:40 AM, Anderson, Dave wrote: > Good news/bad news testing the new kernel on CentOS7 with my now >

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Good news/bad news testing the new kernel on CentOS7 with my now notoriously finicky machines: Good news: 4.9.23-26.el7 (grabbed today via yum update) isn't any worse than 4.9.13-22 was on my xen hosts (as far as I can tell so far at least) Bad news: It isn't any better than 4.9.13 was for me

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 04/19/2017 12:18 PM, PJ Welsh wrote: > > On Wed, Apr 19, 2017 at 5:40 AM, Johnny Hughes > wrote: > > On 04/18/2017 12:39 PM, PJ Welsh wrote: > > Here is something interesting... I went through the BIOS options and > > found that one

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On Wed, Apr 19, 2017 at 5:40 AM, Johnny Hughes wrote: > On 04/18/2017 12:39 PM, PJ Welsh wrote: > > Here is something interesting... I went through the BIOS options and > > found that one R710 that *is* functioning only differed in that "Logical > > Processor"/Hyperthreading

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Here is something interesting... I went through the BIOS options and found that one R710 that *is* functioning only differed in that "Logical Processor"/Hyperthreading was *enabled* while the one that is *not* functioning had HT *disabled*. Enabled Logical Processor and the system starts without

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Apologies: I installed the newer -26 kernel and had not rebooted into it. The grub2 menu item should have been "CentOS Linux (4.9.20-25.el7.x86_64) 7 (Core)". I am currently restarting that remote affected system (unmodified grub2 entry first). Thanks PJ On Tue, Apr 18, 2017 at 8:39 AM, PJ Welsh

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Just to note, the same pattern happens on C7: "CentOS Linux, with Xen hypervisor" = reboot "CentOS Linux (4.9.20-26.el7.x86_64) 7 (Core)" = boot [root@XXX ~]# uname -a Linux XXX 4.9.20-25.el7.x86_64 #1 SMP Fri Mar 31 08:53:28 CDT 2017 x86_64 x86_64 x86_64 On Tue, Apr 18, 2017 at 8:36 AM, PJ

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

There was a note that the non-Xen kernel at the same kernel version did indeed boot: "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

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 04/14/2017 03:26 PM, Anderson, Dave wrote: > Sad to say that I already tested 4.9.20-26 from your repo yesterday...it does > look a little cleaner before it dies, but still dies. I have not tested it > with the vcpu=4 wokaround, but I can tonight if you would like. Relevant bits > below: >

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

I also just realized the C6 portion of the title/subject line here refers to CentOS 6, so I'd like to clarify that all my testing/issues/etc was under CentOS 7.3 with all patches applied. Thanks, -Dave > On Apr 14, 2017, at 1:39 PM, Anderson, Dave wrote: > > So,

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

So, strangely, I have two _identical_ dualproc xeon mobos (same bios/ipmi versions, they even share an enclosure, one is right side, other is left), each with different cpu/memory: Using 4.9.13 with vcpu limited to 4, early in the boot process, the one that _was_ booting before setting the

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Sad to say that I already tested 4.9.20-26 from your repo yesterday...it does look a little cleaner before it dies, but still dies. I have not tested it with the vcpu=4 wokaround, but I can tonight if you would like. Relevant bits below: Loading Xen 4.6.3-12.el7 ... Loading Linux

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Very nice on the sleuthing! Thanks On Fri, Apr 14, 2017 at 5:16 AM, Anderson, Dave wrote: > List moderator: feel free to delete my previous large message with > attachments that's in the moderation queue...it's now obsolete anyway. > > > I have found a fix/workaround for

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

I am on holiday until Sunday, but will download the kernel now and test it when I get back into work. Thanks On Fri, Apr 14, 2017 at 7:39 AM, Johnny Hughes wrote: > Dave, > > Take a look at this kernel as it is the one I think we are going to > release (or a slightly newer

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Dave, Take a look at this kernel as it is the one I think we are going to release (or a slightly newer 4.9.2x from kernel.org LTS). This version has some newer settings that are more redhat/fedora/centos base kernel like WRT what is a module and what is built into the kernel, etc.

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

List moderator: feel free to delete my previous large message with attachments that's in the moderation queue...it's now obsolete anyway. I have found a fix/workaround for my reboot issues with Xen 4.6.3-12 + Kernel 4.9.13: Once I finally got serial output all the way through the boot process

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On Fri, Apr 7, 2017 at 6:58 AM, PJ Welsh wrote: > I've not gotten any bites from my posting on the xen-devel mailing list. > Here is the only one to-date: > https://lists.xen.org/archives/html/xen-devel/2017-04/msg01069.html > > From that email, there needs to be some

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

I've not gotten any bites from my posting on the xen-devel mailing list. Here is the only one to-date: https://lists.xen.org/archives/html/xen-devel/2017-04/msg01069.html >From that email, there needs to be some hypervisor messages. Does anyone know how to produce the hypervisor messages? I've

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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"

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On Tue, Mar 28, 2017 at 10:55 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 >

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

I ran into this also. back up to an older kernel. At least that was my solution till a kernel came out that would boot. It seems that some kernel builds are not friendly to xen. On 03/28/2017 05:55 PM, PJ Welsh wrote: The mystery gets more interesting... I now have a CentOS 7.3 Dell R710

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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,

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

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. On Wed, Mar 22, 2017, 6:27 AM PJ Welsh wrote: > The last few

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

The last few lines are NMI watchdog: disabled CPU0 hardware events not enabled NMI watchdog: shutting down hard lockup detector on all CPUS installing Xen timer for CPU1 installing Xen timer for CPU2 installing Xen timer for CPU3 installing Xen timer for CPU4 installing Xen timer for CPU5

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Sure thing. I will need to wait until AM Tuesday USA time to test now. Thanks PJ On Mon, Mar 20, 2017 at 5:21 PM, Ricardo J. Barberis wrote: > El Lunes 20/03/2017, PJ Welsh escribió: > > Still just starts the kernel and wihtin 4 seconds reboots with 4.9.16-24. > > Thanks

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

El Lunes 20/03/2017, PJ Welsh escribió: > Still just starts the kernel and wihtin 4 seconds reboots with 4.9.16-24. > Thanks > PJ Edit grub's entry and add "noreboot" to your xen parameters, maybe when the kernel panicks xen detects it and automatically reboots it. > On Mon, Mar 20, 2017 at

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Still just starts the kernel and wihtin 4 seconds reboots with 4.9.16-24. Thanks PJ On Mon, Mar 20, 2017 at 2:23 PM, Johnny Hughes wrote: > On 03/20/2017 01:20 PM, PJ Welsh wrote: > > No warning, but still just reboots with no notice. > > Is there any other system info you

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 03/20/2017 01:20 PM, PJ Welsh wrote: > No warning, but still just reboots with no notice. > Is there any other system info you need? > Thanks > PJ > Try the new 4.9.16-24 packages there now. (reworked the config based on a fedora kernel) > On Mon, Mar 20, 2017 at 11:47 AM, Johnny

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

No warning, but still just reboots with no notice. Is there any other system info you need? Thanks PJ On Mon, Mar 20, 2017 at 11:47 AM, Johnny Hughes wrote: > On 03/20/2017 11:21 AM, Johnny Hughes wrote: > > On 03/20/2017 08:35 AM, PJ Welsh wrote: > >> Updating my CentOS 6.8

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 03/20/2017 11:21 AM, Johnny Hughes wrote: > On 03/20/2017 08:35 AM, PJ Welsh wrote: >> Updating my CentOS 6.8 Xen server with new 4.9.13 kernel yields a kernel >> boot message of a few like "APIC ID MISMATCH" and the system reboots >> immediately without any other bits of info. This is on a

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 03/20/2017 08:35 AM, PJ Welsh wrote: > Updating my CentOS 6.8 Xen server with new 4.9.13 kernel yields a kernel > boot message of a few like "APIC ID MISMATCH" and the system reboots > immediately without any other bits of info. This is on a Dell R710 with > 64GB RAM and 2x 6-core Intel CPU's.

Re: [CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

On 03/20/2017 08:35 AM, PJ Welsh wrote: > Updating my CentOS 6.8 Xen server with new 4.9.13 kernel yields a kernel > boot message of a few like "APIC ID MISMATCH" and the system reboots > immediately without any other bits of info. This is on a Dell R710 with > 64GB RAM and 2x 6-core Intel CPU's.

[CentOS-virt] Xen C6 kernel 4.9.13 and testing 4.9.15 only reboots.

Updating my CentOS 6.8 Xen server with new 4.9.13 kernel yields a kernel boot message of a few like "APIC ID MISMATCH" and the system reboots immediately without any other bits of info. This is on a Dell R710 with 64GB RAM and 2x 6-core Intel CPU's. As an additional test, I installed and attempted