When the watchdog daemon detects that the onboard temperature is above the threshold, it tries a clean shutdown. My hardware seems to be a culprit. If the system performs a successful reboot as if the reset button had been pressed , congratulations! On the other hand, with or without my new patch, ThinkPad now reboots successfully upon watchdog timeout. Since we didn’t have sendmail configured, we didn’t get an alert with an explanation, our monitoring just picked up that the server had gone away. Edited by Pavel A Sunday, November 29, 3:
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Comment 3 Konstantin Belousov Maybe someone left a copy of it? This allows us to see in Grafana that the watchdog is working, and resetting every 5 seconds as specified by interval in the config:.
I am particularly interested in test cases where at least one of the following conditions holds, and even more so if several do: However Shuttle mini PC doesn’t. Comment 5 commit-hook In the case of a legacy BIOS boot, it is not enough: Comment 19 Andriy Gapon Sunday, November 29, 3: The no-reboot bit was not set on my test hardware, so I decided to leave its handling for the later time.
The point of this page is to provide simple instructions to test whether the watchdog works. Press the e key while the menu item Try Ubuntu without installing is selected —.
Comment 24 Andriy Gapon On the other hand, with or without my new patch, ThinkPad now reboots successfully upon watchdog timeout. Tell me, please, did anyone manage to find or write the OS boot watchdog timer driver? When the watchdog daemon detects that the onboard temperature is above the ti,er, it tries a clean shutdown.
Hardware Watchdog API (Intel Watchdog Timer)
If booting through UEFIthe screen should appear as shown on right. Systemd has one that your systemd services can integrate with – if your services fail then the hardware watchdog will stop being reset. This should open a terminal as shown next:. Also, I did not try to handle the case where the watchdog resources are not configured by the hardware as well as the case where ACPI defined operational region conflicts with the watchdog resources.
First of all, I have not implemented the functionality required to clear the no-reboot bit. I went with watchdog because it had a series of inbuilt checks, such as:. There are some shortcuts and missing features. Tested on Dell PowerEdge R Thanks Comment 15 commit-hook We generally assume that the computer boots following the UEFI protocol although indications will be given on how to perform the test with a traditional BIOS.
A hardware watchdog is a feature included on many wztchdog, whose purpose is to reboot the computer automatically in case the system hangs: The fact that the WDT “works” in Linux on the same machine? By continuing to browse this site, you agree to this use.
Please report this as a failure. The watchdog service will stop running, the hardware counter will count down to zero since it’s not being reset and the machine will restart and recover. The pdf document says that some support in the BIOS is required. If only the first appears, the watchdog was not detected and it is useless to continue. Sign in to vote. Please report a success to me. Comment 13 commit-hook