Reboot Log Causes

Installing and Using OpenWrt
1

HI all,

Noobie question.
I was wondering if it's possible and how to find or read the causes of a reboot.
When a non voluntary reboot happens, where can I find why this happened?

Thanks

2

One place to check is /sys/kernel/debug/crashlog, it's currently OpenWrt specific way of recording kernel log on reboot caused by panic, etc.

3

Can't find this path, maybe should I have to add something during the make process ?
I mean, some make menuconfig settings?

Thanks

4

The feature should be present by default. The file only be there after reboot caused by panic or oops.

5

Logs, by default, are in volatile memory. One of the easiest ways to capture them would be to run

ssh root@your.router logread -f

from your desktop.

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