Why sysrq is limited to only "sync" command on official fedora kernel?

Ali AlipourR alipoor90 at gmail.com
Wed Feb 25 14:35:56 UTC 2015


>> Why sysrq is limited to only "sync" command on official fedora kernel?
>
> The kernel itself isn't limited.  It's just set that way in
> /usr/lib/sysctl.d/50-default.conf which is provided by systemd.  You
> can edit that file, create your own in /etc/sysctrl.d/, or (as root)
> set it to whatever you would like via /proc/sys/kernel/sysrq.

Of course it can be changed at runtime, but I mean why official fedora
kernel shouldn't be configured to allow all (or at least a wider
subset) of sysrq commands by default?
This way official fedora live CDs are unsuitable for system recovery
tasks; you have to change sysrq value every time you use live CDs or
build your own live CD.

Regards,
Ali


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