/var/log/messages doesn't have crash info when kernel gets panic/oops/crash

Dharmosoth Seetharam dseetharam at inbox.com
Sat Jun 13 03:01:35 EDT 2009

Hi Neil,

Thanks for your quick reply.

What you have suggested is nice when we got/save crash dump (i.e vmcore)
What if we failed to save/capture vmcore info or vmcore is corrupted etc. then we dont get any information
regarding the panic/crash/oops at anywhere?


Thanks and Regards


> -----Original Message-----
> From: nhorman at redhat.com
> Sent: Fri, 12 Jun 2009 16:05:13 -0400
> To: dseetharam at inbox.com
> Subject: Re: /var/log/messages doesn't have crash info when kernel gets
> panic/oops/crash
> On Fri, Jun 12, 2009 at 01:25:49AM -0800, Dharmosoth Seetharam wrote:
>> Hi,
>> I have encounter a problem called /var/log/messages does not contain any
>> information
>> on kernel crash dump.
>> Prior to enabling KEXEC we saw stack traces and bug info etc in
>> /var/log/messages.
>> After enabling KEXEC feature those info was missed.
>> How can we get those missed info in /var/log/messages even when KEXEC
>> feature is enabled.
>> Any help will appreciate.
> run crash on the resultant vmcore file that kexec can produce/save and
> get the
> dmesg log out of it.
> alternatively you can use makedumpfile with the --dump-dmesg log
> Neil
>> Thanks and Regards
>> Seetharam
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