On 09/18/2013 07:20 AM, Alexander Farber wrote:
Hello Steve,
yes, I have that device:
# ll /dev/watchdog crw-rw---- 1 root root 10, 130 Sep 17 23:21 /dev/watchdog
# ps uawwx|grep w[a]tchdog root 6 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/0] root 10 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/1] root 14 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/2] root 18 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/3] root 22 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/4] root 26 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/5] root 30 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/6] root 34 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/7] root 12175 0.0 0.0 6236 2140 ? SLs 11:11 0:00 /usr/sbin/watchdog -v
# grep -v ^# /etc/watchdog.conf ping = 144.76.XXX.XXX admin = root logtick = 360 realtime = yes priority = 1
So you think killing with -9 will indicate if I have hardware watchdog or just software?
Regards Alex
the root 6 0.0 0.0 0 0 ? S Sep17 0:00 [watchdog/0] I believe are related to the cpus.
When you service watchdog start you will see a process like below. That is what you want to kill -9
2094 ? SLs 0:13 /usr/sbin/watchdog
That will preventing it from telling the kernel to reset the watchdog timer which will expire and should reboot you system.
If you don't use -9 the watchdog process will gracefully stop and tell the kernel to turn of the watchdog timer so it won't expire causing the reboot.
Anyway that it how it works on my system.
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