<div dir="ltr">Hi amit,<div style>What you mentioned is correct , dmesg or <span style="font-family:arial,sans-serif;font-size:13px">/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.</span></div>
<div style><span style="font-family:arial,sans-serif;font-size:13px"> I want the document that guides me to find the reason of crash.</span></div><div style><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div>
<div style><span style="font-family:arial,sans-serif;font-size:13px">Thanks & Regards,</span></div><div style><span style="font-family:arial,sans-serif;font-size:13px">Blprasad.</span></div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, May 1, 2013 at 5:52 PM, amit mehta <span dir="ltr"><<a href="mailto:gmate.amit@gmail.com" target="_blank">gmate.amit@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Forgot to reply-all<br>
<div><div class="h5"><br>
On Wed, May 1, 2013 at 5:40 PM, Prasad Lakshman <<a href="mailto:prasad.bl.emb@gmail.com">prasad.bl.emb@gmail.com</a>> wrote:<br>
> Thanks for your reply ,but the link you provided is explaining how to use<br>
> crash utility .I think it's tool by Redhat. But what I am looking for is<br>
> different.<br>
<br>
crash is an open source tool, you can have it on non rhel flavors as well.<br>
<br>
> I need to analyze when linux kernel crashes it generates a dmesg log ,i am<br>
> looking for document explains this dmesg crash log.<br>
><br>
<br>
When your kernel crashes, those crash logs may not be available in the<br>
/var/log/messages (forget dmesg, it's a circular buffer that would be consumed<br>
even earlier). You need to configure something like kdump, netdump to have<br>
the kernel core dumped somewhere to be analysed later using tools such<br>
as crash.<br>
<br>
You may want to refer this [1], a very elaborate step by step guide on<br>
configuring kdump on your Linux machine.<br>
<a href="http://www.dedoimedo.com/computers/kdump.html" target="_blank">http://www.dedoimedo.com/computers/kdump.html</a><br>
<br>
- Amit<br>
<br>
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</blockquote></div><br></div>