On 06/07/2012 20:56, Bob Healey wrote:
> Hello. I've got a quartet of IBM x3630 M3 with one that is frequently
> hard locking under heavy NFS load. I am running 9.0-RELEASE with all
> the patches from freebsd-update.
>
> My problem machine has 8 16 core clients, each doing IO intensive tasks
> connected to it via a Procurve and the onboard igb0 interface. Mostly
> network reads, typically 10MB read per MB written.
> When the machine locks under load, none of the consoles respond, nor can
> I reach the machine via ethernet. I can break into DDB via the serial
> over lan interface, and am running a debug/witness kernel at the moment
> (I was running GENERIC previously). During the boot sequence, witness
> tosses me into DDB ~10 times before I get a login prompt. Prior to this
> machine acting up, it had multiple 802.1q vlans, and ran 9K packets on
> its private network to the compute clients.
>
> A dmesg can be found at http://boyle.che.rpi.edu/~healer/boomer/dmesg
> /etc/rc.conf can be found at
> http://boyle.che.rpi.edu/~healer/boomer/rc.conf
> A listing of installed ports can be found at
> http://boyle.che.rpi.edu/~healer/boomer/pkg_info
> The output of psauxwwo wchan against my two crash dumps can be found at
> http://boyle.che.rpi.edu/~healer/boomer/crash1-psaux-wchan and
> http://boyle.che.rpi.edu/~healer/boomer/crash2-psaux-wchan
>
> I'm not entire convinced this is software, but I've run out of local
> experts to ask, and can't prove its hardware.
Hi,
I tested a recent IBM machine similar to yours recently (I don't know if
it was exactly the same model, but it was probably an M3), and observed
a number of lockups which seemed to be related to the RAID card (IBM's
ServeRAID, re-branded LSI). I don't know if this has anything to do with
your problems, but IIRC in my case there were some kernel messages on
the console relating to the driver and/or PCI bus errors on the slot
with the RAID controller prior to the lockups - maybe you can check for
these.
I have other bad experiences with IBM's hardware and have given up on
them for running FreeBSD.
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