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SMP Multi CPU Kernel Panic

Discussion in 'General Discussion' started by sgemma, Aug 14, 2003.

  1. sgemma

    sgemma Member

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    This may be a little bit unrelated to WHM... I'm running a Duel Xeon machine with an outdated smp kernel. Every time I try to run up2date it installs perfectly and everything appears to be going well...

    Upon reboot the kernel panics and I must instruct the NOC tech to boot with the backup kernel (2.4.18-27.7.xsmp). Everything runs fine again. Now the updated kernel RPM and boot configuration is installed as well as the old kernel RPMs, here's my output of rpm -qa|grep kernel:

    kernel-2.4.18-27.7.x
    kernel-2.4.20-19.7
    kernel-smp-2.4.20-18.7
    kernel-smp-2.4.18-27.7.x
    kernel-smp-2.4.20-19.7
    kernel-2.4.20-18.7

    Should the old RPMs still be installed? Did up2date forget to uninstall the old RPMs?

    If this is normal then here is some more information. My lilo.conf file now reads:

    image=/boot/vmlinuz-2.4.18-27.7.xsmp
    label=linux.bak
    initrd=/boot/initrd-2.4.18-27.7.xsmp.img
    read-only
    root=/dev/sda3

    (THIS IS THE BACKUP KERNEL CFG THAT WORKS)

    image=/boot/vmlinuz-2.4.20-19.7smp
    label=linux
    root=/dev/sda3
    read-only
    initrd=/boot/initrd-2.4.20-19.7smp.img
    append="noht"

    (THIS IS THE UP2DATE KERNEL CFG THAT PANICS)

    What could be causing these kernel panics? Any help is appreciated. Thanks in advance.

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  2. ciphervendor

    ciphervendor Well-Known Member

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    You probably have hardware that isn't supported by the stock/generic red hat kernels. Get someone to compile a kernel manually, which will probably solve your problems.

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  3. stftk14

    stftk14 Well-Known Member

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    This is actually a problem that many people that run this config are having:

    redhat 7.3
    dual xeon
    SCSI HDD

    It appears as though the kernel fails because it dosnt have the SCSI drivers. To fix this though, you basically install some redhat 8.0 things.

    Here is the how-to to do this:

    http://forums.rackshack.net/showthread.php?threadid=25297

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  4. ciphervendor

    ciphervendor Well-Known Member

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    Right. Like I said, compile the kernel from source. Much better than those crappy RPM kernels.

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  5. sgemma

    sgemma Member

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    stftk14,

    Thanks a bunch for the information above. It has solved all of my kernel issues. Looks like I didn't need to hire somebody after all... *ahem*

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  6. stftk14

    stftk14 Well-Known Member

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    no problem.

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