Difference between revisions of "Linux Mint: Watchdog configuration"
From fit-PC wiki
(→Notes) (change visibility) |
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Password: | Password: | ||
| − | $ apt install ioport | + | $ apt install ioport* |
| − | * Note:Starting from Ubuntu 18.04 direct access to I/O ports from the command line provided by ioport package | + | * '''Note:''' Starting from Ubuntu 18.04 direct access to I/O ports from the command line provided by ioport package |
sudo apt install ioport | sudo apt install ioport | ||
On older Ubuntu versions ioport should be installed manually from | On older Ubuntu versions ioport should be installed manually from | ||
Revision as of 13:02, 1 July 2018
List of tested devices
- The guide was tested on a systems with the specs listed below, but should be easily adaptable
Device: fitlet2 CPU: Intel(R) Atom(TM) Processor E3950 BIOS: 05/14/2018 American Megatrends Inc. FLT2.0.40.01.00 OS: Linux Mint 19 Tara Kernel: 4.15.0-20-generic Kernel module: iTCO_wdt
Device: fitlet1 CPU: AMD A10 Micro-6700T APU+AMD Radeon R6 Graphics BIOS: 11/30/2015 American Megatrends Inc. SBCFLT_0.08.08 OS: Linux Mint 19 Tara Kernel: 4.15.0-20-generic Kernel module: sp5100_tco
Device: IPC2 CPU: Intel(R) Core(TM) i5-4300U BIOS: 05/30/2017 Compulab Ltd. IPC2_3.330.5 OS: Linux Mint 19 Tara Kernel: 4.15.0-20-generic Kernel module: iTCO_wdt
Notes
- fitlet1: kernel module i2c_piix4 should be blacklisted
- Expand the below guide
Add the following lines to the /etc/modprobe.d/blacklist.conf
# fitlet1: sp5100_tco conflicts with i2c_piix4 for I/O address 0x0cd6 blacklist i2c_piix4
Then, unload i2c_piix4 and update initramfs
$ sudo modprobe -r i2c_piix4 $ sudo update-initramfs -u
- IPC2-Haswell: iTCO Watchdog does not reset ACPI Watchdog timer
- Expand the below guide
- if the iTCO BIOS does not reset the ACPI Watchdog timer, you may need to disable the BIOS configuration from Linux
BIOS --> South bridge --> Watchdog
Get super-user permissions:
$ su Password:
$ apt install ioport*
- Note: Starting from Ubuntu 18.04 direct access to I/O ports from the command line provided by ioport package
sudo apt install ioport On older Ubuntu versions ioport should be installed manually from https://packages.ubuntu.com/bionic/ioport
And then run the following command:
$ outl 0x1854 0x2000
To read it for validation please run (also as super-user):
$ printf "0x%x\n" $(inl 0x1854) 0x2000
To run this command automatically on each boot add it to file named /etc/rc.local. If you do not have such file, create it.
#!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. outl 0x1854 0x2000 exit 0
Make it executable
$ sudo chmod +x /etc/rc.local
Usage example
- The following usage example represented on fitlet2 with kernel module iTCO_wdt
- For fitlet1 use kernel module sp5100_tco
- Verify it can be loaded successfully and information about the device appears in dmesg output
$ sudo modprobe iTCO_wdt $ dmesg | grep -i iTCO [ 34.741071] iTCO_vendor_support: vendor-support=0 [ 34.742749] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 [ 34.742824] iTCO_wdt: Found a Apollo Lake SoC TCO device (Version=5, TCOBASE=0x0460) [ 34.742993] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
- Install watchdog program, it should run in the background automatically on each system start
$ sudo apt install watchdog
- Modify the following configuration files:
/etc/default/watchdog change: watchdog_module="none" to: watchdog_module="iTCO_wdt"
/etc/watchdog.conf uncomment line: watchdog-device = /dev/watchdog
- NOTE: bugfix required for Linux Mint 18.3
/lib/systemd/system/watchdog.service add "WantedBy=default.target" line under [Install] header, as per below: [Install] WantedBy=default.target
- Try watchdog service and ensure it is running correctly
$ sudo systemctl start watchdog
$ sudo systemctl status watchdog
● watchdog.service - watchdog daemon
Loaded: loaded (/lib/systemd/system/watchdog.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2018-04-17 03:30:58 EDT; 3min 3s ago
Main PID: 1143 (watchdog)
CGroup: /system.slice/watchdog.service
└─1143 /usr/sbin/watchdog
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: int=1s realtime=yes sync=no soft=no mla=0 mem=0
Apr 17 03:30:58 denis-fitlet2 systemd[1]: Started watchdog daemon.
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: ping: no machine to check
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: file: no file to check
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: pidfile: no server process to check
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: interface: no interface to check
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: temperature: no sensors to check
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: test=none(0) repair=none(0) alive=/dev/watchdog heartbeat=none to=root no_act=no force=no
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: watchdog now set to 60 seconds
Apr 17 03:30:58 denis-fitlet2 watchdog[1143]: hardware watchdog identity: iTCO_wdt
- Enable autostart of the watchdog service
$ sudo systemctl enable watchdog Synchronizing state of watchdog.service with SysV init with /lib/systemd/systemd-sysv-install... Executing /lib/systemd/systemd-sysv-install enable watchdog
- Reboot
- Verify the the driver was loaded automatically
$ dmesg | grep -i iTCO
- Simulate kernel panic (as root user):
$ su Password: $ echo 1 > /proc/sys/kernel/sysrq $ echo c > /proc/sysrq-trigger
- As a result, the watchdog mechanism should reboot the system within 30 seconds.
