From mboxrd@z Thu Jan  1 00:00:00 1970
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: bug#39708: nfs-service-type broken: rpc.mountd respawns too quickly
Date: Sun, 08 Mar 2020 10:37:45 -0400
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In-Reply-To: <87y2sbcd5m.fsf@gnu.org> ("Ludovic
 \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
 \=\?utf-8\?Q\?s\?\= message of "Sun, 08 Mar 2020 12:13:41 +0100")
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 39708-done@debbugs.gnu.org

Hello Ludovic!

Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> 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/sbi=
n/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, shephe=
rd 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-const=
ructor=E2=80=99.

That process doesn't create a PID file, so that doesn't work.

> Does that work for you?
>
> Thanks for debugging!

Thanks for assisting, and for adding a note to the Shepherd manual! :-)

I'm closing this issue.

Maxim