[systemd-devel] On every 'sysctl enable/disable' Systemd Reload is happening

[Mahesh Mylarappa]

Thanks for the reply, i will try that. Is it same as --no-reload option?

Regards,
Mahesh

On Mon, Feb 25, 2019 at 11:22 AM Dimitri John Ledkov <xnox at ubuntu.com>
wrote:

> On Mon, 25 Feb 2019 at 19:05, Mahesh Mylarappa <maheshmylar at gmail.com>
> wrote:
> >
> > Hi,
> >
> > I am working on Linux host which has old 219 systemd build. We are
> trying to create/enable/start  multiple service instances at same time.
> Basically we create 15 to 20 unit files in /etc/systemd/system directory
> and call 'systemctl enable' on each one of them. There is only 30 to 50ms
> gap between each enable commands and  i could see few of those taking 10s
> of seconds to complete. If i put log level to debug, i could see that every
> time a new 'sysctl enable' is fired for new service instance,  there is
> complete reload happening and queued jobs are cancelled and reissued.
> >
> > I understand build 219 is very old, but wanted to know if there was a
> similar issue which was fixed in later builds.
> >
>
> What you seem to be looking for is to execute enable command
> "client-side" without communicating with systemd, to check if the
> units exist and are valid, and simply operate on the [Install] stanzas
> requirements on the filesystem alone.
>
> There are a number of checks that are done to switch to client side,
> please see
> https://github.com/systemd/systemd/blob/master/src/systemctl/systemctl.c#L296
>
> I don't know how old those are, but please try
>
> 1) systemctl --root=/ enable ...
> 2) SYSTEMCTL_INSTALL_CLIENT_SIDE=1 systemctl enable ...
>
> I think --root=/ should be supported to switch to client-side/chroot
> install mode even in 219. I have never used the undocumented
> environmental variable, but maybe it is easier to use that for you, if
> it works in v219.
>
> --
> Regards,
>
> Dimitri.
>
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