[systemd-devel] Deferring start of service until file exists

[Lennart Poettering]

On Mi, 21.08.19 09:32, Colin Hogben (systemd at pythontech.co.uk) wrote:

> On 20/08/19 16:54, Silvio Knizek wrote:
>
> > The NFS root needs to be mounted in the initrd step. Else everything
> > will break. With systemd in the initrd you gain the possibilty to
> > depend on those units in the actual system.
>
> Booting with an NFS root is working fine.  I'm not sure how to tell whether
> or not I have "systemd in the initrd" as you describe; I built the initrd
> with dracut, and I get the
>   random: systemd-udevd: uninitialized urandom read (16 bytes read)
> messages before
>   dracut: Mounted root filesystem ...
>
> > Why not systemd-networkd,
>
> systemd-networkd is inadequate for the task.  Even though I could
> potentially parse the ntp servers out of the lease file (is that even a
> public interface with stable format?), I didn't find a way, documented or
> undocumented, for getting the log-server.  Indeed, from scanning the source
> code it seems that any DHCP options other than some core ones and those in
> the private range, e.g. 7 (log-server), are just ignored. (Bizarrely,
> systemd-networkd does include a DHCP server - WTF?! DOTADIW?  But I
> digress...)

Please file an RFE issue that asks for the syslog field to be exposed
in our interfaces. It's easy to do just, noone did this so far.

Lennart

--
Lennart Poettering, Berlin