From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#39708: nfs-service-type broken: rpc.mountd respawns too quickly
Date: Sun, 08 Mar 2020 12:13:41 +0100
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To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 39708@debbugs.gnu.org

Hi!

Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:

> I think I've gathered a clue!

[...]

> scheme@(shepherd service)> (make-forkexec-constructor
>   (list "/gnu/store/qyz1bncxlkxv44c03sva2akfsyqzkzh5-nfs-utils-2.4.2/sbin=
/rpc.mountd" "--debug" "all"))
> $5 =3D #<procedure 7f67f82862a0 at shepherd/service.scm:930:8 args>
> scheme@(shepherd service)> ($5)
> $6 =3D 816
> scheme@(shepherd service)> (system "pidof rpc.mountd")
> warning: 'waitpid' -1 failed unexpectedly: No child processes
> 817

So that means that rpc.mountd =E2=80=9Cdaemonizes=E2=80=9D.  Thus, shepherd=
 shouldn=E2=80=99t
look at the PID of the process it spawns, but rather at what
rpc.mountd=E2=80=99s PID file contains (I assume it creates a PID file,
right?).  IOW, we need to pass #:pid-file to =E2=80=98make-forkexec-constru=
ctor=E2=80=99.

Does that work for you?

Thanks for debugging!

Ludo=E2=80=99.