Messages in this thread | | | Date | Mon, 02 Aug 2004 10:35:34 -0500 | From | Corey Minyard <> | Subject | Re: IPMI watchdog question |
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The IPMI watchdog has never supported writing "V" to disable it. It's a mixed bag with the other watchdogs, some do and some don't, but I can certainly add that function. Or even better, I'd be happy to take a patch :).
-Corey
Holger Kiehl wrote:
>On Wed, 28 Jul 2004, Arkadiusz Miskiewicz wrote: > > > >>On Wednesday 28 of July 2004 12:33, Holger Kiehl wrote: >> >> >> >>>>Do you have CONFIG_WATCHDOG_NOWAYOUT enabled? >>>> >>>> >>>No this is not set. Must this be set? Actually I want that one can stop the >>>watchdog gracefully. And this is done by writting a 'V' to /dev/watchdog, >>>correct? >>> >>> >>Without CONFIG_WATCHDOG_NOWAYOUT (or nowayout=1 module option added by my >>patch just sent to lkml) when /dev/watchdog is closed then watchdog timer is >>disabled. >> >> >> >Ok, with CONFIG_WATCHDOG_NOWAYOUT the system gets it reset. However now >there is no save way to stop the watchdog gracefully. It no longer honors >the magic letter 'V', but looking at the code of ipmi_watchtog.c I could >find no place where it looks for the magic character 'V'. So I am still not >sure what to do. The reason why I killed the process writting the heartbeat >was that I just wanted to see if the watchdog does work. Or is there a >simpler way to simulate a system hangup? > >Thanks, >Holger > >
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