What is /dev/watchdog, what does it do?

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Sergey2016-08-05 01:08:57

linux

Sergey, 2016-08-05 01:08:57

What is /dev/watchdog, what does it do?

Also, some kind of watchdog hangs in the processes, the process is unkillable, is it some kind of timer?

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Ocelot, 2016-08-05
@Ocelot

/dev/watchdog is the interface to the watchdog (if you have one). The watchdog process is a daemon running this timer. The watchdog timer is a piece of iron, which periodically sends a signal "everything is OK, the system has not hung." If this signal is not present for a long time, it reboots the system in hardware.
lexpr.ru/node/513

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