On 31 January 2015 at 14:01, Joonas Sarajärvi <muep@xxxxxx> wrote: > 2015-01-31 13:52 GMT+02:00 Heinz Diehl <htd+ml@xxxxxxxxxx>: >> Hi, >> >> tried to safely bring down a crashed Fedora 21 machine today, but M-sysrq >> didn't do anything. After bringing the machine up again, the logs showed >> that M-sysrq functionality was disabled. After investigating further, it seemed >> that only Sysrq-S (emergency save) was actually working. In /etc/sysctl.d/01-sysctl.conf, >> "kernel.sysrq=1" was present. It took me nearly 30 min. to find out that systemd >> has it's own sysctl definitions, gladly ignoring/overwriting /etc/sysctl.d. In >> /usr/lib/sysctl.d/50-default.conf, "kernel.sysrq=16" was set, which is what crippled >> full sysrq functionality. >> >> In addition, I'm curious what happens when the next systemd update gets pulled in. >> Most probably, my manual settings will be overwritten with what systemd thinks >> is good for the user.. >> > > Processing order of files under /etc/sysctl.d/ seems to be such that > files with a high number override files with a low number. If you do > not want your changes to be overridden, I think it would be a good > idea to pick a high number like 90 instead of 01 for the start if your > config file name. > > -Joonas Exactly. $ cat /etc/sysctl.d/99-sysctl.conf # sysctl settings are defined through files in # /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/. # # Vendors settings live in /usr/lib/sysctl.d/. # To override a whole file, create a new file with the same in # /etc/sysctl.d/ and put new settings there. To override # only specific settings, add a file with a lexically later # name in /etc/sysctl.d/ and put new settings there. # # For more information, see sysctl.conf(5) and sysctl.d(5). I use an /etc/sysctl.d/99-custom-sysctl.conf to override stuff from /usr/lib/sysctl.d/ . -- Ahmad Samir -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
