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Re: Kdump on Fedora - has it been superseded ?

Benjamin Lewis wrote:
On Wednesday 02 January 2008 04:21:00 am David Timms wrote:
Mohammed Omar wrote:
Does Fedora supports kdump ? (especially F8)

Kernel-Flavors http://kbase.redhat.com/faq/FAQ_105_9036.shtm

 From the release notes, it seems like it should be available, however,
I don't see any separate kernel-kdump kernels since FC6, with the latest
   kernel-kdump-2.6.20-1.2962.fc6.i686.rpm   25-Jun-2007

Following the kernel spec:


For F8:
Revision 1.78  - (view) (download) (annotate) - [select for diffs]
Fri Aug 10 06:32:43 2007 UTC (4 months, 3 weeks ago) by roland
spec fix for kdump kernel

For F7:
Revision 1.3214  - (view) (download) (annotate) - [select for diffs]
Tue Jun 5 04:44:46 2007 UTC (6 months, 4 weeks ago) by davej
* Tue Jun 05 2007 Dave Jones <davej redhat com>
- Allow kdump to read /proc/kcore. (#241362)
Revision 1.2918  - (view) (download) (annotate) - [select for diffs]
Sat Feb 3 17:13:17 2007 UTC (10 months, 4 weeks ago) by davej
remove last its of -kdump for 686
Revision 1.2869  - (view) (download) (annotate) - [select for diffs]
Wed Dec 13 19:34:03 2006 UTC (12 months, 2 weeks ago) by davej
kill off -kdump for 686/x86-64

It seems the capability was disabled during F7 and is no longer supported ?

Correct me if I'm wrong, but I thought the default kernel now supported kdump, except on one of the PPC architectures (may be PPC64).

If this is correct - the release notes {live} need an update, along with
the howto at http://fedoraproject.org/wiki/FC6KdumpKexecHowTo
You may be quite correct, and wes replied the same on the f-test list.

If that is the case- how do we go about actually using it ?
ie following along with the FC6KdumpKexecHowTo {where possible}:
# yum install kexec-tools crash
# yum --enablerepo=\*debuginfo install kernel-debuginfo
- add the parameters to grub as suggested.
- manually service kdump start or restart the machine since the service defaults to start.
- cause a crash with the cat /proc command.
Result I got was mouse stopped working, with some colour changes in the clock and my desktop background image. After 4 minutes, tried a heap of keys like ctrl-alt-f1 etc, ctrl-alt-backspace, alt-tab etc.
Numlock still operational {ie led toggles}.
Pressing ctrl-alt-delete did initiate a reboot.

Checking in /var/crash/ showed no files.

David Timms.

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