Using crash utility usage - cannot find booted kernel error (vmlinux)

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I'd like to make an analysis   in RH 5.5 for created vmcore file .

 

According to some docs  two kernel packages are required - kernel-debuginfo-version.arch.rpm and kernel-debuginfo-common-version.arch.rpm .

 

 

I have these ones :

 

# yum list | grep debug

kernel-debug.x86_64                    2.6.18-194.el5        installed
kernel-debug-devel.x86_64              2.6.18-194.el5        installed

 

 

 

Neither kernel-debug-common-* is not available .

 

I assume that due to this fact  I do not have /usr/lib/debug/lib/modules/ directory with vmlinix in order to proceed with vmcore  analysis .

 

# crash

........

 

crash: cannot find booted kernel -- please enter namelist argument

 

Please advise .

 

 

/Vlad .

 

nd

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