kexec on panic

Petr Tesarik ptesarik at
Fri Feb 10 07:43:13 PST 2017

On Fri, 10 Feb 2017 10:14:02 +0200
Denys Fedoryshchenko <nuclearcat at> wrote:

> Hello,
> After years of using kexec and recent unpleasant experience with modern 
> (supposed to be blazing fast to boot) hardware that need 5-10 minutes 
> just to pass POST tests,
> one question came up to me:
> Is it possible anyhow to execute regular (not special "panic" one to 
> capture crash data) kexec on panic to reduce reboot time?

No. But you can load a specially crafted panic initrd which kexec's
back to the production kernel.

Petr T

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