Date: Fri, 14 May 2010 07:15:14 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Doug Ambrisko <ambrisko@ambrisko.com> Cc: rihad <rihad@mail.ru>, freebsd-stable@FreeBSD.org Subject: Re: Enabling watchdog Message-ID: <20100514141514.GA1075@icarus.home.lan> In-Reply-To: <201005141416.o4EEGS6E057680@ambrisko.com> References: <4BECD1CB.9060902@mail.ru> <201005141416.o4EEGS6E057680@ambrisko.com>
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On Fri, May 14, 2010 at 07:16:28AM -0700, Doug Ambrisko wrote: > rihad writes: > | On 05/14/2010 04:13 AM, Doug Ambrisko wrote: > | > 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). > | > | Thanks. So did I understand it right that I should first install > | sysutils/ipmitool, then start polling "ipmitool sel list" in a shell > | script from a cron job run once a minute, and reboot in case IPMI > | triggers? But if it's a kernel lockup, none of the user level code might > | run at all. Any way to fall back to a hard and fast kernel level machine > | reset? > > Nope, when you load the ipmi driver it provides a HW watchdog via ipmi > and works with watchdogd. Now if you want to know if your machines > rebooted due to the watchdog then check the ipmi sel for the watchdog > event. I'm a bit confused at this point, Doug. At what point did the OP state he has IPMI support or IPMI cards in his system? -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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