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

[Alan Bartlett]

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.