bug#39708: nfs-service-type broken: rpc.mountd respawns too quickly

[Maxim Cournoyer]

Ludovic Courtès <address@hidden> writes:

> Hi,
>
> Maxim Cournoyer <address@hidden> skribis:
>
>> The rpc.mountd service, one of the required services for
>> nfs-service-type, respawns the process quickly until disabled.
>
> Does /var/log/messages contain hints?  Is rpc.statd running?
> Could it be that all these services need to depend on ‘loopback’?
>
> No answers, but a lot of questions.  :-)
>
> Ludo’.

OK, I've managed to find the problem.  rpc.mountd daemonizes itself upon
starting by default, which is not supported by Shepherd (at least not
its `make-forkexec-constructor' procedure).  I had to pass the
'--foreground' option to workaround this limitation (c.f.: commit
5fdc5b2d57d2e7ab04dbaf9c85e7f34eebe81495).

It'd be interesting to see what systemd does when a service is hinted as
forking in its configuration file.  We should also document that
limitation in the Shepherd info manual (see attached patch for
Shepherd).

Maxim

0001-doc-Note-that-make-forkexec-constructor-requires-a-n.patch
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