I I think grub isn't seeing my updated changes when I'm setting up kdump on F-20.

First I installed the the packages kexec-tools, crash, and kernel-debuginfo.

Next I added crashkernel=128M  to GRUB_CMDLINE_LINUX the  in /etc/default/grub.

Then I rebuild the grub config with:

grub2-mkconfig -o /boot/grub2/grub.cfg and it creates the file ok.

But, after rebooting, kdump hasn't started and I get the error from systemctl status kdump:

kdump.service - Crash recovery kernel arming
   Loaded: loaded (/usr/lib/systemd/system/kdump.service; enabled)
   Active: failed (Result: exit-code) since Mon 2014-05-26 19:15:03 EDT; 16min ago
  Process: 1308 ExecStart=/usr/bin/kdumpctl start (code=exited, status=1/FAILURE)
 Main PID: 1308 (code=exited, status=1/FAILURE)
   CGroup: /system.slice/kdump.service

May 26 19:15:03 tesla kdumpctl[1308]: No memory reserved for crash kernel.
May 26 19:15:03 tesla kdumpctl[1308]: Starting kdump: [FAILED]
May 26 19:15:03 tesla systemd[1]: kdump.service: main process exited, code=exited, status=1/FAILURE
May 26 19:15:03 tesla systemd[1]: Failed to start Crash recovery kernel arming.
May 26 19:15:03 tesla systemd[1]: Unit kdump.service entered failed state.


Which leads me to think that my grub.conf really isn't working for some reason.

This is on an AMD system with 16 Gigs of ram, so available memory is definitely not a problem.

Could be something else, but in any case I'm sure I'm missing something stupid ...

Thanks.

- Derrik