I'm having trouble with IBM xseries 345/dual Xeon 2.66GHz showing only one processor. At boot I see "SMP motherboard not recognized". Using
title CentOS (2.6.18-8.1.8.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-8.1.8.el5 module /vmlinuz-2.6.18-8.1.8.el5xen ro root=/dev/VolGroup00/LogVol00 rhgb quiet module /initrd-2.6.18-8.1.8.el5xen.img
have tried acpi=no (causes boot-hang), acpi=ht (boot hang), noapic (no effect), and noht (no effect)
Booting to gentoo-minimal CDrom shows expected 4 cores (dual HT) with cat /proc/cpuinfo, only 1 using 2.6.18-8.1.8.el5xen
Any ideas? many thanks
gen2 spake the following on 7/10/2007 8:40 PM:
I'm having trouble with IBM xseries 345/dual Xeon 2.66GHz showing only one processor. At boot I see "SMP motherboard not recognized". Using
title CentOS (2.6.18-8.1.8.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-8.1.8.el5 module /vmlinuz-2.6.18-8.1.8.el5xen ro root=/dev/VolGroup00/LogVol00 rhgb quiet module /initrd-2.6.18-8.1.8.el5xen.img
have tried acpi=no (causes boot-hang), acpi=ht (boot hang), noapic (no effect), and noht (no effect)
Booting to gentoo-minimal CDrom shows expected 4 cores (dual HT) with cat /proc/cpuinfo, only 1 using 2.6.18-8.1.8.el5xen
Any ideas? many thanks
Is bios up to date? Does non zen kernel detect both processors?
Scott Silva wrote:
Is bios up to date? Does non zen kernel detect both processors?
Bios is not up to date, rather not go anywhere near that considering I can boot to the gentoo-minimal CD and see all 4 cores. Unless I'm not understanding something there...please explain if so. I assume if the bios is working for 2.6.16 gentoo, it should be fine for centos 2.6.18.
non zen kernel panics immediately on boot, 2.6.18-8.1.8 or 2.6.18-8.1.6.
gen2 spake the following on 7/11/2007 11:02 AM:
Scott Silva wrote:
Is bios up to date? Does non zen kernel detect both processors?
Bios is not up to date, rather not go anywhere near that considering I can boot to the gentoo-minimal CD and see all 4 cores. Unless I'm not understanding something there...please explain if so. I assume if the bios is working for 2.6.16 gentoo, it should be fine for centos 2.6.18.
non zen kernel panics immediately on boot, 2.6.18-8.1.8 or 2.6.18-8.1.6.
But a kernel from RedHat is not equal to a kernel from Gentoo. Patches are added by each distro to comply with whatever patching ideal they have, or hardware they are trying to comply with. Unless it botches on install, a bios update usually doesn't hurt anything. I see install docs on the IBM site up to RedHat Ent.4, so it should be OK. But all the docs mention having the bios up to date.
On 7/11/07, Scott Silva ssilva@sgvwater.com wrote:
gen2 spake the following on 7/11/2007 11:02 AM:
Scott Silva wrote:
Is bios up to date? Does non zen kernel detect both processors?
Bios is not up to date, rather not go anywhere near that considering I can boot to the gentoo-minimal CD and see all 4 cores. Unless I'm not understanding something there...please explain if so. I assume if the bios is working for 2.6.16 gentoo, it should be fine for centos 2.6.18.
I've got 4 x345's here at the office running Centos4 with smp just fine, however it did require an update of the scsi controller firmware, and the bios to get things to work right.
It's pretty straight forward to do, and the ibm folks are good about replacing parts if you brick your hardware (at least for us)
Jim Perrin wrote:
I've got 4 x345's here at the office running Centos4 with smp just fine, however it did require an update of the scsi controller firmware, and the bios to get things to work right.
Great to know it will ultimately work, thanks. I'm up to current bios now, and the "SMP mainboard not recognized" has been replaced with "Found 1 CPU" (or something similar). So definitely progress, but still not there yet.
BIOS settings look proper, still seeing 4 cores on gentoo-cd, HT is active. Tried acpi=ht again and it locks up before the kernel launches.
Me baffled! Thanks for the help so far, getin there.
On 7/11/07, gen2 gen2@planetofidiots.com wrote:
Great to know it will ultimately work, thanks. I'm up to current bios now, and the "SMP mainboard not recognized" has been replaced with "Found 1 CPU" (or something similar). So definitely progress, but still not there yet.
Okay, now that's just odd. You might try booting to the diagnostic partition and running the system through its paces there. After I updated to the most recent bios everything for me 'Just Worked'
BIOS settings look proper, still seeing 4 cores on gentoo-cd, HT is active. Tried acpi=ht again and it locks up before the kernel launches.
Something here just doesn't smell right. Where exactly in the boot/install process does it die? Given that the IBM serveraid support isos boot linux, I'm a little shocked it's not working for you. HT should be disabled (in my opinion) as it's mostly useless. You might try resetting the bios settings to default, in case a tweak there has pushed something over.
Jim Perrin wrote:
Something here just doesn't smell right. Where exactly in the boot/install process does it die? Given that the IBM serveraid support isos boot linux, I'm a little shocked it's not working for you. HT should be disabled (in my opinion) as it's mostly useless. You might try resetting the bios settings to default, in case a tweak there has pushed something over.
Bullseye! I think it was the combination of all advice given. Many thanks, all!
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gen2 -
Jim Perrin -
Scott Silva