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 <daveanderson@xxxxxxx> wrote: > > 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 xen vcpu args says: > "[ 7.060720] smpboot: Max logical packages: 2", > > and the other one says > "[ 6.195089] smpboot: Max logical packages: 1" > > > > They both have dual procs, known working/good. > > > The first (the one that worked unmodified) has dual 8 core (16 HT/ea) and correctly detects "[ 0.000000] smpboot: Allowing 32 CPUs, 0 hotplug CPUs". It's a Xeon E5-2665v1. > > The second machine (didn't work without the xen vcpu args) has dual 4 core (8ht/ea) and also correctly detects "[ 0.000000] smpboot: Allowing 16 CPUs, 0 hotplug CPUs". It's a Xeon E5-2643v1...so it seems like this one does ok until it decides there's only one cpu package? > > Thanks, > -Dave > > >> On Apr 14, 2017, at 13:26, Anderson, Dave <daveanderson@xxxxxxx> 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: >> >> Loading Xen 4.6.3-12.el7 ... >> Loading Linux 4.9.20-26.el7.x86_64 ... >> Loading initial ramdisk ... >> [ 0.000000] Linux version 4.9.20-26.el7.x86_64 (mockbuild@) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) ) #1 SMP Tue Apr 4 11:19:26 CDT 2017 >> >> <snip> >> >> [ 6.195089] smpboot: Max logical packages: 1 >> [ 6.199549] VPMU disabled by hypervisor. >> [ 6.203663] Performance Events: SandyBridge events, PMU not available due to virtualization, using software events only. >> [ 6.215436] NMI watchdog: disabled (cpu0): hardware events not enabled >> [ 6.222139] NMI watchdog: Shutting down hard lockup detector on all cpus >> [ 6.229165] installing Xen timer for CPU 1 >> [ 6.233849] installing Xen timer for CPU 2 >> [ 6.238504] installing Xen timer for CPU 3 >> [ 6.243139] installing Xen timer for CPU 4 >> [ 6.247836] installing Xen timer for CPU 5 >> [ 6.252478] installing Xen timer for CPU 6 >> [ 6.257155] installing Xen timer for CPU 7 >> [ 6.261795] installing Xen timer for CPU 8 >> [ 6.266358] smpboot: Package 1 of CPU 8 exceeds BIOS package data 1. >> [ 6.272736] ------------[ cut here ]------------ >> [ 6.277358] kernel BUG at arch/x86/kernel/cpu/common.c:997! >> [ 6.280104] random: fast init done >> [ 6.286333] invalid opcode: 0000 [#1] SMP >> [ 6.290343] Modules linked in: >> [ 6.293430] CPU: 8 PID: 0 Comm: swapper/8 Not tainted 4.9.20-26.el7.x86_64 #1 >> [ 6.300568] Hardware name: Supermicro X9DRT/X9DRT, BIOS 3.2a 08/04/2015 >> [ 6.307183] task: ffff880058a68000 task.stack: ffffc900400c0000 >> [ 6.313103] RIP: e030:[<ffffffff8103e7e7>] [<ffffffff8103e7e7>] identify_secondary_cpu+0x57/0x80 >> [ 6.322019] RSP: e02b:ffffc900400c3f08 EFLAGS: 00010086 >> [ 6.327333] RAX: 00000000ffffffe4 RBX: ffff88005d80a020 RCX: ffffffff81e5ffc8 >> [ 6.334473] RDX: 0000000000000001 RSI: 0000000000000005 RDI: 0000000000000005 >> [ 6.341607] RBP: ffffc900400c3f18 R08: 00000000000000ce R09: 0000000000000000 >> [ 6.348738] R10: 0000000000000005 R11: 0000000000000006 R12: 0000000000000008 >> [ 6.355873] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 >> [ 6.363006] FS: 0000000000000000(0000) GS:ffff88005d800000(0000) knlGS:0000000000000000 >> [ 6.371090] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033 >> [ 6.376837] CR2: 0000000000000000 CR3: 0000000001e07000 CR4: 0000000000042660 >> [ 6.383970] Stack: >> [ 6.386004] 0000000000000008 0000000000000000 ffffc900400c3f28 ffffffff8104ebce >> [ 6.393483] ffffc900400c3f40 ffffffff81029855 0000000000000000 ffffc900400c3f50 >> [ 6.400963] ffffffff810298d0 0000000000000000 0000000000000000 0000000000000000 >> [ 6.408450] Call Trace: >> [ 6.410907] [<ffffffff8104ebce>] smp_store_cpu_info+0x3e/0x40 >> [ 6.416753] [<ffffffff81029855>] cpu_bringup+0x35/0x90 >> [ 6.421981] [<ffffffff810298d0>] cpu_bringup_and_idle+0x20/0x40 >> [ 6.427987] Code: 44 89 e7 ff 50 68 0f b7 93 d2 00 00 00 39 d0 75 1c 0f b7 bb da 00 00 00 44 89 e6 e8 e4 02 01 00 85 c0 75 07 5b 41 5c 5d c3 0f 0b <0f> 0b 0f b7 8b d4 00 00 00 89 c2 44 89 e6 48 c7 c7 e8 ce ca 81 >> [ 6.448249] RIP [<ffffffff8103e7e7>] identify_secondary_cpu+0x57/0x80 >> [ 6.454801] RSP <ffffc900400c3f08> >> [ 6.458305] ---[ end trace 2f9b62c5c7050204 ]--- >> >> >> So basically, it removes the "[Firmware Bug]: CPU1: APIC id mismatch. Firmware: 0 APIC: 1" lines, but otherwise dies the same way. I included a few extra lines up from the panic because the "[ 6.195089] smpboot: Max logical packages: 1" could possibly be relevant, I need to go look at a clean boot to see if that was in there on this machine. >> >> >> Even more strangely, in addition to the machine I'm talking about which panics and reboots, I had a second nearly identical machine (different CPU/ram config, everything else the same) which booted but had some kind of hw conflict with 4.9.x that I never had before. It appears to be between Intel SCU and an intel PCIe NVMe SSD (luckily I wasn't using SCU, so I disabled that). Had that other machine not booted I would have just assumed 4.9.X was totally broken and sat on 3.18...so I'm glad that one machine booted at least :) >> >> Thanks, >> -Dave >> >> >>> On Apr 14, 2017, at 05:39, Johnny Hughes <johnny@xxxxxxxxxx> wrote: >>> >>> 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. >>> >>> https://people.centos.org/hughesjr/4.9.x/ >>> >>> Thanks, >>> Johnny Hughes >>> >>> On 04/14/2017 05:16 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 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 (xen+dom0) I discovered the stack trace: >>>> >>>> [Firmware Bug]: CPU7: APIC id mismatch. Firmware: 0 APIC: 7 >>>> installing Xen timer for CPU 8 >>>> [Firmware Bug]: CPU8: APIC id mismatch. Firmware: 0 APIC: 20 >>>> smpboot: Package 1 of CPU 8 exceeds BIOS package data 1. >>>> ------------[ cut here ]------------ >>>> kernel BUG at arch/x86/kernel/cpu/common.c:997! >>>> invalid opcode: 0000 [#1] SMP >>>> Modules linked in: >>>> CPU: 8 PID: 0 Comm: swapper/8 Not tainted 4.9.13-22.el7.x86_64 #1 >>>> Hardware name: Supermicro X9DRT/X9DRT, BIOS 3.2a 08/04/2015 >>>> random: fast init done >>>> task: ffff880058a8c4c0 task.stack: ffffc900400b4000 >>>> RIP: e030:[<ffffffff8103e527>] [<ffffffff8103e527>] identify_secondary_cpu+0x57/0x80 >>>> RSP: e02b:ffffc900400b7f08 EFLAGS: 00010086 >>>> RAX: 00000000ffffffe4 RBX: ffff88005d80a020 RCX: ffffffff81c5be68 >>>> RDX: 0000000000000001 RSI: 0000000000000005 RDI: 0000000000000005 >>>> RBP: ffffc900400b7f18 R08: 00000000000000cb R09: 0000000000000004 >>>> R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000008 >>>> R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 >>>> FS: 0000000000000000(0000) GS:ffff88005d800000(0000) knlGS:0000000000000000 >>>> CS: e033 DS: 002b ES: 002b CR0: 0000000080050033 >>>> CR2: 0000000000000000 CR3: 0000000001c07000 CR4: 0000000000042660 >>>> Stack: >>>> 0000000000000008 0000000000000000 ffffc900400b7f28 ffffffff8104e94e >>>> ffffc900400b7f40 ffffffff81029925 0000000000000000 ffffc900400b7f50 >>>> ffffffff810299a0 0000000000000000 0000000000000000 0000000000000000 >>>> Call Trace: >>>> [<ffffffff8104e94e>] smp_store_cpu_info+0x3e/0x40 >>>> [<ffffffff81029925>] cpu_bringup+0x35/0x90 >>>> [<ffffffff810299a0>] cpu_bringup_and_idle+0x20/0x40 >>>> Code: 44 89 e7 ff 50 68 0f b7 93 d2 00 00 00 39 d0 75 1c 0f b7 bb da 00 00 00 44 89 e6 e8 24 03 01 00 85 c0 75 07 5b 41 5c 5d c3 0f 0b <0f> 0b 0f b7 8b d4 00 00 00 89 c2 44 89 e6 48 c7 c7 98 87 a6 81 >>>> RIP [<ffffffff8103e527>] identify_secondary_cpu+0x57/0x80 >>>> RSP <ffffc900400b7f08> >>>> ---[ end trace dc5563100443876e ]--- >>>> >>>> I surmised that reducing the number of dom0 vcpu might solve this issue (they were unbounded) >>>> >>>> In testing adding "dom0_max_vcpus=4 dom0_vcpus_pin" to the GRUB_CMDLINE_XEN_DEFAULT line in /etc/defaults/grub and re-running grub2-mkconfig has resulted in the system I have that never booted Xen 4.6.3-12 + Kernel 4.9.13, booting every single time out of 5-10 tests. >>>> >>>> >>>> So...I don't know if there's a race condition somewhere, or what...but...so far this workaround has not failed me. >>>> >>>> Thanks, >>>> -Dave >>>> >>>> >>>> >>>>> On Fri, Apr 7, 2017 at 6:58 AM, PJ Welsh <pjwelsh at gmail.com >>>>>> 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 hypervisor messages. >>>>>> >>>>>> Does anyone know how to produce the hypervisor messages? I've already >>>>> >>>>>> removed the rhgb and quiet options from the boot. >>>>> >>>>>> >>>>>> Thanks >>>>>> PJ >>>>> >>>>> >>>>> I spoke too soon. To get more information: Please see >>>>> >>>>> https://wiki.xenproject.org/wiki/Reporting_Bugs_against_Xen_Project >>>>> >>>>> and >>>>> >>>>> https://wiki.xenproject.org/wiki/Xen_Serial_Console >>>>> >>>>> or alternatively at least add "vga=keep". >>>>> >>>>> pjwelsh >>>> >>>> >>>> _______________________________________________ >>>> CentOS-virt mailing list >>>> CentOS-virt@xxxxxxxxxx >>>> https://lists.centos.org/mailman/listinfo/centos-virt >>>> >>> >>> >>> _______________________________________________ >>> CentOS-virt mailing list >>> CentOS-virt@xxxxxxxxxx >>> https://lists.centos.org/mailman/listinfo/centos-virt _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos-virt
