topic Re: Red Hat Linux 4: How to enable crash dump during panic in Operating System - Linux

Red Hat Linux 4: How to enable crash dump during panic

kenny chia — Thu, 27 Dec 2007 06:47:31 GMT

Hi
I have a Red Hat ES4 system. Recently the system panic and it rebooted (By ASR). But unlike HP-UX systems there was no crash dump to be found.

How do I configure Linux to create a crash dump during Kernel Panic?

Thanks

Re: Red Hat Linux 4: How to enable crash dump during panic

Vitaly Karasik_1 — Thu, 27 Dec 2007 07:25:14 GMT

Unfortunately, it is not trivial. But possible - see this articlehttp://www.redhatmagazine.com/2007/08/15/a-quick-overview-of-linux-kernel-crash-dump-analysis/

Re: Red Hat Linux 4: How to enable crash dump during panic

Heironimus — Thu, 27 Dec 2007 16:10:23 GMT

In addition to actual crash dump tools, Red Hat ships netconsole. You can use that to send kernel messages to another host. So far I've had better results with netconsole than with crash dumps, but most of my "crashes" haven't been OS crashes, they've been Oracle's hangcheck watchdog or HP's ASR.

Re: Red Hat Linux 4: How to enable crash dump during panic

skt_skt — Thu, 27 Dec 2007 17:15:54 GMT

Here is the link for setting up Sysrq:
http://kbase.redhat.com/faq/FAQ_80_5559.shtm

Here is the link for setting up Netdump:
http://kbase.redhat.com/faq/FAQ_43_2467.shtm

Please let us know if you need help setting these up.

Re: Red Hat Linux 4: How to enable crash dump during panic

kenny chia — Fri, 28 Dec 2007 07:00:12 GMT

Hi
I have check out netdump but unfortunately the broadcomm bcm5700 network driver cannot support this feature..

Re: Red Hat Linux 4: How to enable crash dump during panic

Vitaly Karasik_1 — Sun, 30 Dec 2007 07:56:53 GMT

may be tg3 driver supports netdump?

Re: Red Hat Linux 4: How to enable crash dump during panic

kenny chia — Tue, 08 Jan 2008 00:58:23 GMT

hmmm..
I setup another server which is using the bcm5700 driver and crash it. It managed to dump data to the netdump server.