Testing crash dump documentation unclear (sysrq 176)

Bug #1769130 reported by Adnan Ali on 2018-05-04
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu Server Guide
Undecided
Doug Smythies

Bug Description

Hallo,

i would like to inform you that there is an error in the documentation about "Testing the Crash Dump Mechanism"[0]. In Ubuntu 18.04 the default value of kernel.sysrq is 176 but this case is not mentioned in the page.

To help future readers understand it more easily you could maybe write "If a value other than 1 is returned the feature is disabled."

Thank you very much for your effort.

regards,
Adnan

[0] https://help.ubuntu.com/lts/serverguide/kernel-crash-dump.html.en#kdump-testing

Related branches

Doug Smythies (dsmythies) wrote :

Agree this is a little unclear. I'll mention that the default value is as specified in /etc/sysctl.d/10-magic-sysrq.conf.

Changed in serverguide:
status: New → In Progress
assignee: nobody → Doug Smythies (dsmythies)
Doug Smythies (dsmythies) wrote :

O.K. this is turning into a saga. I can't get the crash dump stuff to work at all. It seems others have had exactly the same issues (https://askubuntu.com/questions/1037625/kdump-doesnt-log-crash).

@Adnan: did it work for you?

Changed in serverguide:
status: In Progress → Fix Committed
Changed in serverguide:
status: Fix Committed → Fix Released
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