hi Amit,<br><br>On Wed, Aug 17, 2011 at 3:04 PM, amit mehta <span dir="ltr"><<a href="mailto:gmate.amit@gmail.com">gmate.amit@gmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I've a Linux box which is crashing under a particular test scenario.<br>
To debug this issue I was thinking of using the crash (man 8 crash)<br>
utility (available by default on recent releases of RHEL and SuSE) .<br>
This tool requires the kernel crash dump (vmcore) and the debugging symbols.<br>
On my machine, I don't see any crash under /var/crash, Hence please<br>
let me know the<br>
configuration changes which i need to do to enable my machine to dump<br>
the kernel image<br>
locally (do i need to apply diskdump patches and rebuild the kernel??) whenever<br>
there is a kernel crash. Kdump seem to be another tool for this job<br>
but that requires a lot of<br>
setup. Is there a *shortcut* to enable kernel crash dump facility ?<br>
<br>
The debugging symbols can be found here:<br>
<a href="http://ftp.riken.go.jp/Linux/slc/slc6X/updates/x86_64/debug/" target="_blank">http://ftp.riken.go.jp/Linux/slc/slc6X/updates/x86_64/debug/</a><br>
<a href="http://ftp.riken.go.jp/Linux/slc/slc6X/updates/i386/debug/" target="_blank">http://ftp.riken.go.jp/Linux/slc/slc6X/updates/i386/debug/</a><br>
<br>
<br></blockquote><div><br> You need to configure kdump on your RHEL system to enable it to dump
the vmcore file when the panic happens... Kdump configuration is
explained below.. There is a crashkernel boot parameter to be passed to kernel to specify the memory reserved for the crash kernel.<br>
<br>
<a href="http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/ch-kdump.html">http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/ch-kdump.html</a><br>
<br><a href="http://www.mindtwist.de/main/linux/11-red-hat/27-how-to-configure-kernel-dumps-on-rhel-5.html">http://www.mindtwist.de/main/linux/11-red-hat/27-how-to-configure-kernel-dumps-on-rhel-5.html</a><br>
<br><a href="http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=/liaai/crashdump/liaaicrashdumpconfigkdump.htm">http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=/liaai/crashdump/liaaicrashdumpconfigkdump.htm</a><br>
<br>
<br>
Thanks and Regards,<br>
Sumeet<br> </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
-Amit<br>
<br>
_______________________________________________<br>
Kernelnewbies mailing list<br>
<a href="mailto:Kernelnewbies@kernelnewbies.org">Kernelnewbies@kernelnewbies.org</a><br>
<a href="http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies" target="_blank">http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies</a><br>
</blockquote></div><br>