Server hangs at "rebooting"

[Brian Krause]

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?

[Steven E. Protter]

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

[Ivan Ferreira]

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.

[Brian Krause]

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.

[Philip Waters]

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.

[Ivan Ferreira]

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

[Kodjo Agbenu · Accepted solution]

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

[Brian Krause]

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

reboot=b

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

[Brian Krause]

This worked...

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reboot=b

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