<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On 11 July 2013 05:40, Jaroslav Reznik <span dir="ltr"><<a href="mailto:jreznik@redhat.com" target="_blank">jreznik@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">= Proposed System Wide Change: Enable kdump on secureboot machines =<br>
<a href="https://fedoraproject.org/wiki/Changes/Kdump_with_secureboot" target="_blank">https://fedoraproject.org/wiki/Changes/Kdump_with_secureboot</a><br>
<br>
Change owner(s): Vivek Goyal <<a href="mailto:vgoyal@redhat.com">vgoyal@redhat.com</a>><br>
<br>
Currently kexec/kdump is disabled on machines with secureboot enabled. This<br>
feature aims to enable kexec/kdump on such machines.<br>
<br>
== Detailed description ==<br>
/sbin/kexec prepares a binary blob, called purgatory. This code runs at<br>
priviliged level between kernel transition. With secureboot enabled, no<br>
unsigned code should run at privilige level 0, hence kexec/kdump is currently<br>
disabled if secureboot is enabled.<br>
<br></blockquote><div><br></div><div>My question is "Does kdump work even without secureboot?" In trying to debug a crashing bug with older kernels and F19 I enabled kdump to try and get a crashing image for the developers to work. I ran into a ton of issues and when asking on #fedora-kernel was given the strong impression that kdump was not expected to work by the various kernel developers.</div>
</div><br clear="all"><div>Issues I ran into was:</div><div><br></div><div>1) kdump needs to write to an unencrypted disk space. I tried a USB disk and various other places but the best ability I got was reinstalling the laptop and making a /var/crash partition.</div>
<div>2) kdump didn't seem to dump for anything than the forced dump in the instruction manual. </div><div><br></div><div>In the end the kernel developers got me a kernel with enough oops detection to help find the problems but how do we get kdump to be more useful?</div>
<div><br></div>-- <br><div dir="ltr">Stephen J Smoogen.<br><br></div>
</div></div>