[Pacemaker] about iTCO_wdt watchdog

emmanuel segura emi2fast at gmail.com
Thu Aug 2 07:09:54 UTC 2012


echo "b" >/proc/sysrq-trigge

2012/8/2 Mia Lueng <xiaozunvlg at gmail.com>

> Hi All:
>    I use IBM 3650 to build a HA cluster. And set iTCO_wdt as the
> watchdog. The following test is performed
> 1. modprobe iTCO_wdt heartbeat=60 nowayout=1
> 2. echo "1" >/dev/watchdog
>    system will reboot after 60s
>
>    But when I run command    echo "c" >/proc/sysrq-trigger  after
> echo "1" >/dev/watchdog.   System will crash but can not reboot.
>
>    As I know, iTCO_wdt is a hardware driver, system will be reboot if
> no data is writter in 60 seconds even when system crash.    What's
> wrong here?
>
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