A watchdog device is required to be loaded in order for the SBD to work correctly.
If your hardware or virtualization platform does not offer a watchdog, make sure that you at least configure the software watchdog, "softdog", module.
/etc/modules-load.d/yast.conf
)./etc/modules-load.d/yast.conf
).During the configuration phase all the modules listed in the Watchdogs to Configure will be added to the configuration file and probed immediately.