GNU bug report logs - #55898
Services depending on new Shepherd features may fail until reboot

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Maxime Devos <maximedevos <at> telenet.be>
Cc: 55898 <at> debbugs.gnu.org
Subject: bug#55898: jami service failing following reconfigure
Date: Fri, 24 Jun 2022 14:01:23 -0400

Hi again,

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> writes:

> Hello Maxime,
>
> Maxime Devos <maximedevos <at> telenet.be> writes:
>
>> Maxim Cournoyer schreef op za 11-06-2022 om 01:53 [-0400]:
>>> I don't get it; how can the service runs fine in the instrumented VMs
>>> the system tests use, and fail in my updated machine?  Could it be a
>>> fault in 'guix deploy'?
>>
>> Maybe the shepherd has the old (gnu build jami-service) module loaded
>> and it doesn't know know to reload modules during reconfiguration?

I verified that in the
/gnu/store/fyd7rmvzhhqbk1f08c4pl7ahhlfgig40-shepherd-jami.scm file it
was setting up the load path with everything needed, such as

--8<---------------cut here---------------start------------->8---
(eval-when
    (expand load eval)
  (let
      ((extensions
        (quote
         ("/gnu/store/f6q4237n62lq7n8z3qyh3jx5iinb9myr-guile-packrat-0.1.1" "/gnu/store/l2f9gmd64w56nnhnlb63hg8f5crfvwln-guile-ac-d-bus-1.0.0-beta.0" "/gnu/store/is9f6ki7i2f6qk80ivvz7q1vvlibb96l-guile-fibers-1.0.0")))
       (prepend
        (lambda
            (items lst)
          (let loop
              ((items items)
               (lst lst))
            (if
             (null? items)
             lst
             (loop
              (cdr items)
              (cons
               (car items)
               (delete
                (car items)
                lst))))))))
    (set! %load-path
          (prepend
           (cons "/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import"
                 (map
                  (lambda
                      (extension)
                    (string-append extension "/share/guile/site/"
                                   (effective-version)))
                  extensions))
           %load-path))
    (set! %load-compiled-path
          (prepend
           (cons "/gnu/store/zqgpayc87lfmcmncgzbp5v59hav8ww1c-module-import-compiled"
                 (map
                  (lambda
                      (extension)
                    (string-append extension "/lib/guile/"
                                   (effective-version)
                                   "/site-ccache"))
                  extensions))
           %load-compiled-path))))
--8<---------------cut here---------------end--------------->8---

The /gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import directory
contains:

--8<---------------cut here---------------start------------->8---
$ find /gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build/dbus-service.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build/file-systems.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build/jami-service.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build/linux-container.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/build/shepherd.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/system
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/system/file-systems.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/gnu/system/uuid.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/build
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/build/bournish.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/build/syscalls.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/build/utils.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/colors.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/i18n.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/profiling.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/diagnostics.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/memoization.scm
/gnu/store/7kgdg6dmgncqirj3k07n02hq6kjyf4an-module-import/guix/records.scm
--8<---------------cut here---------------end--------------->8---

and the referenced [...]/gnu/build/jami-service.scm file does contain
the supposedly missing 'jami-service-available?' procedure.

I'm suspecting that given the service makes use of Shepherd 0.9
features, perhaps it fails loading and the error is reported erroneously
that way... a reboot would tell but I'm not in a position to do that at
this moment (remote machine).

Thanks,

Maxim

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