can the hardware watchdog reboot a hung kernel?
Eugene Grosbein
eugen at grosbein.net
Thu Nov 14 15:53:34 UTC 2019
14.11.2019 22:35, Daniel Braniss wrote:
>> It's possible if the hardware has such a watchdog and kernel subsystem watchdog(4) supports it.
>> rc.conf(5) manual page describes watchdogd_enable option.
>>
>
> yes, but it relys on user land, what if the kernel is hung?
No, it does not relay on userland. Well, in part: userland daemon replies to hardware watchdog "host is alive"
and if system hangs and watchdog stops getting replies, it resets the system.
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