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

On Wed, Feb 25, 2015 at 9:35 AM, Ali AlipourR <alipoor90(a)gmail.com&gt; wrote: >>> 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? Maybe we're getting hung up on a terminology issue, but this isn't a kernel configuration issue. It's something userspace is doing. > 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. That's a good point. Since the live images have a "rescue" mode, maybe there is a way to use a different value when booted into that. How that would look, I'm not sure. Maybe dracut would need to include an override file in the initramfs. josh