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From: Doug Ambrisko <ambrisko@ambrisko.com>
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To: rihad <rihad@mail.ru>
Date: Thu, 13 May 2010 16:13:11 -0700 (PDT)
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Cc: freebsd-stable@FreeBSD.org
Subject: Re: Enabling watchdog
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rihad writes:
| Hi, I'm thinking of enabling the watchdog on our Dell PowerEdge 2950 / 
| FreeBSD 8.0 amd64, so that it reboots the machine in case of lockups.
| Right now it doesn't work:
| 
| # watchdog
| watchdog: patting the dog: Operation not supported
| #
| Looking through the kernel configuration I found two relevant settings:
| In /sys/conf/NOTES:
| #
| # Add software watchdog routines.
| #
| options SW_WATCHDOG
| 
| and in /sys/amd64/conf/NOTES:
| #
| # Watchdog routines.
| #
| options MP_WATCHDOG
| 
| Which of them should I rebuild the kernel with? BTW, the existing kernel 
| is built with the default "options SCHED_ULE" to make good use of 
| multiple CPUs, does watchdog work with it?

If no one has said yet, kldload ipmi then run watchdogd.  ... or compile
it into the kernel.  This will enable the IPMI HW watchdog.  If it triggers,
it will appear in the IPMI SEL (ipmitool sel list).

Doug A.