[Pkg-systemd-maintainers] Bug#725422: systemd set kernel.sysrq=16

[Goffredo Baroncelli]

On 2013-10-06 01:00, Michael Biebl wrote:
> tags 725422 + moreinfo
> severity 725422 normal
> thanks
> 
> Am 05.10.2013 18:27, schrieb Goffredo Baroncelli:
>> Package: systemd
>> Version: 204-5
>> Severity: important
>> Tags: upstream
>>
>>
>> Problem description:
>> After installing the systemd package some sysrq keys don't work any more.
>>
>> Expected behaviour:
>> The systemd package must not interact with the sysrq key setting
>>
>> Analysis:
>> The systemd package contains the file /usr/lib/sysctl.d/50-default.conf. In 
>> this file there is the following entry:
>>
>>    # System Request functionality of the kernel (SYNC)
>>    kernel.sysrq = 16
>>
>> which changes the allowable sysrq key. This entry is present also in the
>> upstream package.
>>
>> Suggested solution:
>> Comment the entry "kernel.sysrq = 16" in the file 
>> /usr/lib/sysctl.d/50-default.conf.
> 
> You failed to justify why kernel.sysrq = 16 is a bad default.
> Can you elaborate?

I didn't argue about the default value for kernel.sysrq. I am arguing
that it is not the job of systemd to change/force a value of kernel.sysrq.

Anyway I was not able to find the reason behind this value. May be it is
good for the average user, I don't know. I want to have the ability to
do a Sync, saK, Umount and reBoot when my system crashed.

BTW, I am looking a way to change this default without changing this
file. I supposed that adding a file in /etc/sysctl.d with the MY default
would be sufficient, but it seems not the case....

> 
> Michael
> 
G.Baroncelli

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