[elrepo] Should I be able to get a kernel dump from kernel-lt on CentOS 5.X

[Antonio Dupont]

Thanks Alan.  Understood.  I'll build a debug version.  It's just so nice
to install the RPM instead of doing a compile on my slow test machine.
Thanks for the reply and all you guys do.


On Thu, Apr 17, 2014 at 8:17 AM, Alan Bartlett <ajb at elrepo.org> wrote:

> On 17 April 2014 02:32, Antonio Dupont <antonio at moosefactory.com> wrote:
> > I've installed  kernel-lt-3.2.57-1.el5.elrepo.i686.rpm on my CentOS 5.5
> > system because I'm trying to troubleshoot a third party USB hardware
> issue
> > that causes the system to hang.  If I issue the commands:
> >
> > echo 1 > /proc/sys/kernel/sysrq
> > echo "c" > /proc/sysrq-trigger
> >
> > The system looks like it's starting to capture the dump information, but
> > complains about many kernel-module version mismatches and the kernel
> that it
> > says it's mismatching is cryptic.  For example:
> >
> > Mounting sysfs filesystem
> > Creating /dev
> > Creating inital device notes
> > Loading scsi_mod.ko module
> > insmod: kernel-module version mismatch
> > /lib/modules/3.2.57-1.el5.elrepo/scsi_mod.ko was compiled for kernel
> version
> > M?**=a while this kernel is version 3.2.57-1.el5.elrepo
> >
> > The M?**=a is the cryptic part.  The ** are actually suppose to be boxes,
> > but I don't know how to make that system.
> >
> > With the latest CentOS 5.X debug kernel (kernel-debug-2.6.18-371.6.1.el5)
> > when I issue those commands kdump starts and captures system information
> in
> > a vmcore file.
> >
> > Does kernel-lt-3.2.57-1.el5.elrepo have the capability to capture kernel
> > dump information?  If so, any appearant indications of what I am doing
> > wrong.  If no, I will work on compiling my own 3.2.57 kernel with the
> > necessary parameters.  Any suggestions are appreciated.
> >
> > Thanks for you help in advance.
> >
> > Regards,
> >
> > Antonio
>
> Sorry but kernel-lt-3.2.57-1.el5.elrepo is just a standard kernel
> package and not a debug kernel package. The ELRepo Project does not
> build any kernel-{lt|ml}-debug packages.
>
> To use the CentOS/RHEL analogy, the standard kernel package is
> kernel-2.6.18-371.6.1.el5 and the debug kernel package is
> kernel-debug-2.6.18-371.6.1.el5 Notice the difference in the package
> names?
>
> Alan.
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