As far as I can tell with NM you setup a connection and link the connection to the device. Why? If your cluster communication breaks down, and you finally need to actually use stonith, chances are that the DRBD replication link broke down as well, whatever you write to your local instance of DRBD cannot reach the peer, and the peer's sbd daemon has no way to know about that … The Linux watchdog API is a rather AD hoc construction and different : drivers implement different, and sometimes incompatible, parts of it. The cable had something on one of the connectors (dirt or plastic remains) that was preventing it from connecting. This file is an attempt to document the existing usage and allow: future driver writers to use it as a reference. Moreover, restart your system and networking equipment. This daemon will communicate via the /dev/watchdog device to your watchdog-driver/device. The boot log shows that the watchdog is enabled, but triggering the watchdog does not cause the board to reset. I do not claim to be an expert on watchdog, but to see if it is running systemctl status watchdog.service. # cat /proc/version Linux version 2.6.22.1-rt9 (gcc version 3.4.6) #1 PREEMPT RT Tue Oct 9 12:25:47 CEST 2007 # cat /proc/cmdline ro root=/dev/hdc1 console=ttyS0,57600n8 console=tty0 panic=3 apic=debug nmi_watchdog=2 I've noticed on some boxes that nmi_watchdog=2 does what you state. On the Orange Pi the SOC chip provides a hardware watchdog. Unfortunately you seem to have mixed a lot of different ideas. Activation of Network Connection Failed. This is how I created the connection: sudo nmcli con add con-name MyEth0 type ethernet ifname eth0 I've also tried modifying it with the following sorts of commands: sudo nmcli con mod MyEth0 connection.interface-name eth0 Running sudo nmcli con … Watchdog timers are commonly found in embedded systems and other computer-controlled equipment where humans cannot easily access the equipment or would be unable to react to faults in a timely manner. Otherwise it could cause a conflict and the pins could be in the unexpected mode, if any two different pinctrl-client devices activate the conflicting pinctrl-groups. The SBD devices must not reside on a DRBD instance. For those embedded systems that can't be constantly watched by a human, watchdog timers may be the solution. The Linux watchdog API is a rather ad-hoc construction and different: drivers implement different, and sometimes incompatible, parts of it. U-boot runs with the following message but the kernel never starts. I'm trying to enable the NMI watchdog. At times,it might be required to explicity disable the device node making use of the conflicting pinctrl-groups . modprobe -r ipmi_devintf. EricZ89 last edited by . This file is an attempt to document the existing usage and allow future driver writers to use it as a reference. Killing watchdog WILL NOT cause a reboot, because the watchdog.service starts wd_keepalive.service on closure, which as its name implies PREVENTS reboot. Linux character device interface for the message handler. Is it possible to activate the watchdog on any Linux machine? remove the IPMI kernel modules: modprobe -r IPMI. The Linux watchdog API is a rather AD hoc construction and different drivers implent different, and sometimes incompatible parts of it. U-Boot 2013.07 (Nov 20 2014 - 08:59:19) Memory: ECC disabled DRAM: 512 MiB MMC: zynq_sdhci: 0 SF: Detected S25FL256S_64K with page size 64 KiB, total 64 MiB In: serial Out: serial Err: serial Net: Gem.e000b000 … Be constantly watched by a human, watchdog timers may be the solution the connection to the device a... The watchdog does not cause the board to reset is running systemctl status watchdog.service remains ) that preventing...: modprobe -r IPMI on watchdog, but to see if it is systemctl... Different: drivers implement different, and sometimes incompatible, parts of it a reboot because. On watchdog, but to see if it is running systemctl status watchdog.service making use of the pinctrl-groups... Implement different, and sometimes incompatible, parts of it modules: modprobe -r.. That ca n't be constantly watched by a human, watchdog timers may be the.. The board to reset watchdog does not cause the board to reset watchdog, but triggering the does! 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