Need a good document that explains how to analyze kernel crash dump.

[Prasad Lakshman]

Hi amit,
What you mentioned is correct , dmesg or /var/log/messages  display the
crash log ,somehow I got this log even after the system crash. After
obtaining the crash log we need to know the reason of crash.
 I want the document that guides me to find the reason of crash.

Thanks & Regards,
Blprasad.


On Wed, May 1, 2013 at 5:52 PM, amit mehta <gmate.amit at gmail.com> wrote:

> Forgot to reply-all
>
> On Wed, May 1, 2013 at 5:40 PM, Prasad Lakshman <prasad.bl.emb at gmail.com>
> wrote:
> > Thanks for your reply ,but the link you provided is explaining how to use
> > crash utility .I think it's tool by Redhat. But what I am looking for is
> > different.
>
> crash is an open source tool, you can have it on non rhel flavors as well.
>
> > I need to analyze when linux kernel crashes it generates a dmesg log ,i
> am
> > looking for document  explains this dmesg crash log.
> >
>
> When your kernel crashes, those crash logs may not be available in the
> /var/log/messages (forget dmesg, it's a circular buffer that would be
> consumed
> even earlier). You need to configure something like kdump, netdump to have
> the kernel core dumped somewhere to be analysed later using tools such
> as crash.
>
> You may want to refer this [1], a very elaborate step by step guide on
> configuring kdump on your Linux machine.
> http://www.dedoimedo.com/computers/kdump.html
>
> - Amit
>
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