>too bad :-) Thanks for the find! By the way, note that PID-1-only cgroups management is a systemd decision, as far as I understand from the kernel mailing list posts, the interface will still be a filesystem, and apparently it is OK to implement cgroup management by multiple root processes (i.e. not a migration to a single open socket).
> >On Wed, Jun 4, 2014 at 8:14 AM, Kirill Elagin <[email protected]> wrote: > >> http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/ >> >> http://cgit.freedesktop.org/systemd/systemd/tree/src/core/main.c#n1469 >> >> >> -- >> Кирилл Елагин >> >> >> On Wed, Jun 4, 2014 at 1:21 AM, Wout Mertens <[email protected]> >> wrote: >> >>> On Tue, Jun 3, 2014 at 8:30 PM, Kirill Elagin <[email protected]> >>> wrote: >>> >>>> Obviously systemd would then have to not do things that udev etc are >>>>> already doing... Just running services, opening sockets, handling >>>>> cgroups... >>>>> >>>> >>>> I doubt systemd can do this. >>>> First of all, with the new kernel cgroups interface only PID 1 can >>>> manage cgroups (on the kernel level). >>>> Then, to properly handle services (i.e. processes) systemd has to be PID >>>> 1, right? Because otherwise it won't be able to track dead processes and >>>> all this stuff. >>>> >>> >>> Are you sure about PID 1? I can't find that in >>> https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt >>> >>> I'm thinking systemd can run in user-mode, even if it's running as root. >>> It's automatically turned on when it's not PID 1, I need to try it. >>> >>> Wout. >>> >> >> > >--047d7b414174e5bf6404fafd5f90 >Content-Type: text/html; charset=UTF-8 >Content-Transfer-Encoding: 8bit >X-MIME-Autoconverted: from quoted-printable to 8bit by 401a0bf1 id >mimedecode.py > ><div dir="ltr">too bad :-) Thanks for the find!</div><div >class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jun 4, 2014 at >8:14 AM, Kirill Elagin <span dir="ltr"><<a >href="mailto:[email protected]"; >target="_blank">[email protected]</a>></span> wrote:<br> ><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc >solid;padding-left:1ex"><div dir="ltr"><a >href="http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/"; >target="_blank">http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/</a><br> ><br><a >href="http://cgit.freedesktop.org/systemd/systemd/tree/src/core/main.c#n1469"; >target="_blank">http://cgit.freedesktop.org/systemd/systemd/tree/src/core/main.c#n1469</a><br> > ></div><div class="gmail_extra"><br clear="all"><div><div >dir="ltr"><div><br></div>--<br>Кирилл Елагин</div></div><div><div class="h5"> ><br><br><div class="gmail_quote">On Wed, Jun 4, 2014 at 1:21 AM, Wout Mertens ><span dir="ltr"><<a href="mailto:[email protected]"; >target="_blank">[email protected]</a>></span> wrote:<br><blockquote >class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc >solid;padding-left:1ex"> > > ><div dir="ltr"><div><div><div class="gmail_extra"><div class="gmail_quote">On >Tue, Jun 3, 2014 at 8:30 PM, Kirill Elagin <span dir="ltr"><<a >href="mailto:[email protected]"; >target="_blank">[email protected]</a>></span> wrote:<br> > > > ><blockquote class="gmail_quote" style="margin:0px 0px 0px >0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div > dir="ltr"><div class="gmail_extra"><div><div class="gmail_quote"> > > > ><blockquote class="gmail_quote" style="margin:0px 0px 0px >0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div > dir="ltr"><div class="gmail_extra"><div class="gmail_quote"> > > > > > ><div class="gmail_extra">Obviously systemd would then have to not do things >that udev etc are already doing... Just running services, opening sockets, >handling cgroups...</div></div></div></div></blockquote></div><br></div> > > > >I doubt systemd can do this.<br> > >First of all, with the new kernel cgroups interface only PID 1 can manage >cgroups (on the kernel level).<br>Then, to properly handle services (i.e. >processes) systemd has to be PID 1, right? Because otherwise it won't be >able to track dead processes and all this stuff.<br> > > > > > ></div></div> ></blockquote></div><br></div></div></div><div class="gmail_extra">Are you sure >about PID 1? I can't find that in <a >href="https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt"; >target="_blank">https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt</a></div> > > > ><div class="gmail_extra"><br></div><div class="gmail_extra">I'm thinking >systemd can run in user-mode, even if it's running as root. It's >automatically turned on when it's not PID 1, I need to try it.</div> > > ><span><font color="#888888"> ><div class="gmail_extra"><br></div><div >class="gmail_extra">Wout.</div></font></span></div> ></blockquote></div><br></div></div></div> ></blockquote></div><br></div> > >--047d7b414174e5bf6404fafd5f90-- > >--===============1597797028== >Content-Transfer-Encoding: 7bit >Content-Disposition: inline >MIME-Version: 1.0 >Content-Type: text/plain; charset="utf-8" >X-MIME-Autoconverted: from us-ascii to utf-8 by 401a0bf1 id mimedecode.py > >_______________________________________________ >nix-dev mailing list >[email protected] >http://lists.science.uu.nl/mailman/listinfo/nix-dev > >--===============1597797028==-- _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
