[systemd-devel] [PATCH v3 3/4] manager: add a global watchdog reboot timestamp
Chris Paulson-Ellis
chris at edesix.com
Wed Feb 1 11:24:28 PST 2012
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.
C.
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