Date: Fri, 06 Jul 2012 14:56:13 -0400 From: Bob Healey <healer@rpi.edu> To: freebsd-stable@freebsd.org Subject: Problems with crashing IBM X3630 M3/ZFS Message-ID: <4FF734CD.9070401@rpi.edu>
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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. -- Bob Healey Systems Administrator Biocomputation and Bioinformatics Constellation and Molecularium healer@rpi.edu (518) 276-4407
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