topic Re: Server hangs at "rebooting" in Operating System - Linux

Server hangs at "rebooting"

Brian Krause — Wed, 16 Nov 2005 23:07:38 GMT

I have a DL380-G4 (updated BIOS) running RHES4. When I issue the command shutdown -r now, the server goes thru the normal shutdown procedure but hangs at the very end when it displays "rebooting". Am I missing a bios switch or something? All of my other servers running the same OS work normally. Anyone have any ideas?

Re: Server hangs at "rebooting"

Steven E. Protter — Thu, 17 Nov 2005 07:24:14 GMT

Shalom Brian,

Check the bios version of a working server aginst this broken one. Flash the non-working one if its behind.

Boot with a diagnostic cd and check that the hardware is all working.

SEP

Re: Server hangs at "rebooting"

Ivan Ferreira — Thu, 17 Nov 2005 07:37:19 GMT

From the SMP HOWTO:

If the machine reboots/freezes after a while, there can be two good BIOS + memory related reasons

* If the BIOS has settings like "memory hole at 16M" and/or "OS/2 memory > 64MB", try disabling them both. Linux does not always react well with theese options.

* If you have more than 64 MB of memory in the machine, and you specified the exact number manually in the LILO/GRUB configuration, you should specify one MB less than you actually have in the machine.

Re: Server hangs at "rebooting"

Brian Krause — Thu, 17 Nov 2005 19:40:06 GMT

I have already finished the diagnostics previously. Seems that a high-availability deamon might be keeping the kernel from issuing the restart command to the hardware. Still checking on this. Thanks for the help.

Re: Server hangs at "rebooting"

Philip Waters — Fri, 18 Nov 2005 10:49:46 GMT

I seem to remember when I had a similar problem, that the server that wouldn't shutdown also didn't have apaci installed on it. Something in the power management module might give the instructions how to power down. I'm making this up as I go, of course. but you can verify this by doing rpm -qa | grep apaci on a server that works, and one that does not.

Re: Server hangs at "rebooting"

Ivan Ferreira — Fri, 18 Nov 2005 12:59:42 GMT

What Phillip says sounds good, you can disable apm by using the noapm kernel boot option.

Re: Server hangs at "rebooting"

Kodjo Agbenu — Sun, 20 Nov 2005 04:22:25 GMT

Hi,

I had the same issue with my laptop and thanks to google I resolved it by appending :

reboot=b

to kernel boot parameters (/boot/grub/grub.conf).

Good lcuk.
Kodjo

Re: Server hangs at "rebooting"

Brian Krause — Tue, 22 Nov 2005 09:58:21 GMT

Thanks everyone...
-----------------------------

reboot=b

to kernel boot parameters (/boot/grub/grub.conf).
--------------------------------
This worked.....

Re: Server hangs at "rebooting"

Brian Krause — Tue, 22 Nov 2005 10:02:41 GMT

This worked...

-------------------------------
reboot=b

to kernel boot parameters (/boot/grub/grub.conf).