On 01/02/12 19:05, Lennart Poettering wrote:
(As I figured out newer Intel chipsets all have watchdogs now, so I am actually quite keen to see this implemented in systemd now, since I can actually test it.)
Just a warning to anyone who's thinking of depending on the chipset watchdog... In my experience, many boards are not correctly wired up to reset properly when the chipset watchdog fires. Although it works most of the time, I've had boards hang under testing using the iTCO_wdt watchdog driver. I expect the chipset & processor reset fine, but the rest of the board doesn't. On boards like these I use the softdog driver instead as Linux rarely hangs so badly that it can't run the emergency restart code. We're developing external watchdog hardware to allow us to continue to use these cheap PC boards with confidence.
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