From unknown Thu Jun 19 14:23:01 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#48521 <48521@debbugs.gnu.org> To: bug#48521 <48521@debbugs.gnu.org> Subject: Status: opendht-service-type hangs Shepherd at boot Reply-To: bug#48521 <48521@debbugs.gnu.org> Date: Thu, 19 Jun 2025 21:23:01 +0000 retitle 48521 opendht-service-type hangs Shepherd at boot reassign 48521 guix submitter 48521 Maxim Cournoyer severity 48521 normal thanks From debbugs-submit-bounces@debbugs.gnu.org Wed May 19 07:59:30 2021 Received: (at submit) by debbugs.gnu.org; 19 May 2021 11:59:30 +0000 Received: from localhost ([127.0.0.1]:58289 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljKrK-0004yh-0a for submit@debbugs.gnu.org; Wed, 19 May 2021 07:59:30 -0400 Received: from lists.gnu.org ([209.51.188.17]:53000) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljKrI-0004yb-39 for submit@debbugs.gnu.org; Wed, 19 May 2021 07:59:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47970) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljKrH-00016z-Pa for bug-guix@gnu.org; Wed, 19 May 2021 07:59:27 -0400 Received: from mail-qt1-x82a.google.com ([2607:f8b0:4864:20::82a]:41918) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ljKrD-0003LH-03 for bug-guix@gnu.org; Wed, 19 May 2021 07:59:27 -0400 Received: by mail-qt1-x82a.google.com with SMTP id t20so9851414qtx.8 for ; Wed, 19 May 2021 04:59:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version; bh=IcOQ4W3ch/L5MTDwI10qXlhaVmCALONuCkp08+gMDkk=; b=TzRCola9MHgy67YfC4U1UkRwPav5Y7Qy4XyAs9WHkG7FWV7udHILVLbn+HTeQ7D8iC a6VqHVzN/WGV7sijL673E6r/vW3M2mvog1bTtgFb+qLMYwuqqX1JpGuG5ker8rC+WQzd 1lVGMrBml7WkDwWxpR7qguf4rhHOmeVMAFQL6VXZc0UfZIhaKQF+o64RjNu3p+TEkPes 9aBr/RyF0H9s0CQ4Is0hA9/4jAnaMj7BsCiTiyR5GIaX6+8lND9f/bQy2zbq/iRXbz/m i1/GeDtZfZBeATpg8ZAZXWHy+nO5Sn2aYIWcaGMdLKQCG5fQiP1qa9zwrqSur45IWwEi UIzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=IcOQ4W3ch/L5MTDwI10qXlhaVmCALONuCkp08+gMDkk=; b=a1yoh32TjgPxZheiKO7fqpK/XpLeUtVm6FqDqN32wV22w1lgX9taQX6yaa7MeW/yMx GK/oVAS8AVDSri8l24ClY5wHsPeAbSNiZHFLltMDzUidRhwAxiz73LQVwYF8CDYKbOLO j5l/WeU0uHS00+8YlQrUN1jednPYZ/RTMrdf0BbW5CPIsvuGBJV5JLuLjY5sMGsVD9JG T4OT+d+gVwjgGZzK1eE0EBtykiY6Z8GdEGLpw5a8lkprlvnkCh58+jljEQeOYbqnt0nI godw3K0vSEGa4hGDabGs6mkDE702idmGPUVhrf/uiS4E6YYlCfPeBRiPZgTBsXIlIKZn sKIQ== X-Gm-Message-State: AOAM533tD/5qeJno9G+TgCyAnGqUOIYroSs3blJ6t9AMQMDOTCvD1JoH ymlh74Fipd3YuUKuLjfTrsyC1ONyeFw= X-Google-Smtp-Source: ABdhPJxe3l+pzjgrJyzEEyiLr5t/C9pfRmqCW59qJFoSDGv9aNTdTt9bLhrRvaSu+9FQz7E2MzAR9A== X-Received: by 2002:a05:622a:3d1:: with SMTP id k17mr10665158qtx.50.1621425562059; Wed, 19 May 2021 04:59:22 -0700 (PDT) Received: from hurd (dsl-150-81.b2b2c.ca. [66.158.150.81]) by smtp.gmail.com with ESMTPSA id w4sm14635010qki.57.2021.05.19.04.59.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 May 2021 04:59:21 -0700 (PDT) From: Maxim Cournoyer To: bug-guix Subject: opendht-service-type hangs Shepherd at boot Date: Wed, 19 May 2021 07:59:19 -0400 Message-ID: <874kezhr3c.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2607:f8b0:4864:20::82a; envelope-from=maxim.cournoyer@gmail.com; helo=mail-qt1-x82a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) Hello, I just noticed about this problem following a reboot. I can also reproduce it in 'guix system vm', simply adding the opendht-service-type to my operating-system declaration. The boot proceeds until 'error in finalization thread: Success' then hangs indefinitely. What is troubling for me is that the service is rather straightforwardly defined. It uses the make-forkexec-constructor/container like so: --8<---------------cut here---------------start------------->8--- (define (opendht-shepherd-service config) "Return a running OpenDHT." (shepherd-service (documentation "Run an OpenDHT node.") (provision '(opendht dhtnode dhtproxy)) (requirement '(user-processes syslogd)) (start #~(make-forkexec-constructor/container (list #$@(opendht-configuration->command-line-arguments config)) #:mappings (list (file-system-mapping (source "/dev/log") ;for syslog (target source))) #:user "opendht")) (stop #~(make-kill-destructor)))) --8<---------------cut here---------------end--------------->8--- I'm not sure how using such basic building blocks could lead to a hang in Shepherd ? Thanks, Maxim From debbugs-submit-bounces@debbugs.gnu.org Wed May 19 17:36:48 2021 Received: (at 48521) by debbugs.gnu.org; 19 May 2021 21:36:48 +0000 Received: from localhost ([127.0.0.1]:60864 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljTs0-0008I0-3f for submit@debbugs.gnu.org; Wed, 19 May 2021 17:36:48 -0400 Received: from mail-qt1-f173.google.com ([209.85.160.173]:38790) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljTry-0008Hm-5e for 48521@debbugs.gnu.org; Wed, 19 May 2021 17:36:46 -0400 Received: by mail-qt1-f173.google.com with SMTP id h21so11323873qtu.5 for <48521@debbugs.gnu.org>; Wed, 19 May 2021 14:36:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:references:date:in-reply-to:message-id:user-agent :mime-version; bh=WCJHCGcF8matyptbA2eRkFGJ7yxl41N+qNP7Zk/dxYY=; b=pWvJ9rmHOzefjkcdnrmhGEl2Hmtccu9/NcWkAStRS4U6NMOKuBeQzhyAvCVwr7BHCL fIb7MJH5L7AdQwnNNG+IplAHF3s/US76Q3QNdJg7JHckn4nr+7BpyrTYHHBWcfngQ33A MkpkqBHl0nwfRPOkRvqq3QjzLuWCCL3aYTbYI0eA/OBoT99DaAtLCa9hgJTgOLpdE7oD ppmmkd4LtZvkDpjADI63/Hd6H8JPd9srY5hpqwyYvdoSqKiJdcZts+KKHNSjH/NZnELv tbwuVsfLZXCN3s9jS9XF3VgI+5EOCOgmvYhyfuema9lhsWqMDdEWP/EXSb/G6b+SNMdW uPAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=WCJHCGcF8matyptbA2eRkFGJ7yxl41N+qNP7Zk/dxYY=; b=B/PI/hs2AahQNWkq39N0Rjq1r/V12g4aiKBs0ST2KjoakdTIQ1G+rPW1VQowpOOUuv 2RR2kTkqlZTMjrdo1g26lPGoPheEq8QSd6AHbaqeAe+qQDXJbKG8thI8xLSePOW2OlE4 IMbCop5dTPdQu5E5QA65e1qtNNFGm7hHoc22G65nq6w7GlL6+MVjNOCkkEjY+y2tWzKt KR+f3UTqVlmkBXXeSp9YmNmgbZcwQhmzcJ4AmIToWqsWmV8k0Om5sr18l4KjHOL6AYdA x3T/tXiXK0JmLuFIO/2F5sA+ACooRrzZgapOZgbgNsmDlJwUrnK5sh2LbhGxwV22FSjF Rm6A== X-Gm-Message-State: AOAM531ueqmTa5PMxA5CljnETsXlhf1DD2euYsuVCMveeosEj5A46B9w 4s1ooBeOyu6igepn65u0O2g+cXBhzO8= X-Google-Smtp-Source: ABdhPJwpCccrRtYbDH9m1PQ35q+9BElgHyKpkbtREAbxzYR5tFR32xs5hbAF+CKCwow9t3J4KzUUNQ== X-Received: by 2002:a05:622a:588:: with SMTP id c8mr1707548qtb.49.1621460200196; Wed, 19 May 2021 14:36:40 -0700 (PDT) Received: from hurd (dsl-150-81.b2b2c.ca. [66.158.150.81]) by smtp.gmail.com with ESMTPSA id i9sm577263qtg.18.2021.05.19.14.36.39 for <48521@debbugs.gnu.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 May 2021 14:36:39 -0700 (PDT) From: Maxim Cournoyer To: 48521@debbugs.gnu.org Subject: Re: bug#48521: opendht-service-type hangs Shepherd at boot References: <874kezhr3c.fsf@gmail.com> Date: Wed, 19 May 2021 17:36:38 -0400 In-Reply-To: <874kezhr3c.fsf@gmail.com> (Maxim Cournoyer's message of "Wed, 19 May 2021 07:59:19 -0400") Message-ID: <87zgwqh0d5.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 48521 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) Maxim Cournoyer writes: > Hello, > > I just noticed about this problem following a reboot. I can also > reproduce it in 'guix system vm', simply adding the opendht-service-type > to my operating-system declaration. > > The boot proceeds until 'error in finalization thread: Success' then > hangs indefinitely. > > What is troubling for me is that the service is rather straightforwardly > defined. It uses the make-forkexec-constructor/container like so: > > (define (opendht-shepherd-service config) > "Return a running OpenDHT." > (shepherd-service > (documentation "Run an OpenDHT node.") > (provision '(opendht dhtnode dhtproxy)) > (requirement '(user-processes syslogd)) > (start #~(make-forkexec-constructor/container > (list #$@(opendht-configuration->command-line-arguments config)) > #:mappings (list (file-system-mapping > (source "/dev/log") ;for syslog > (target source))) > #:user "opendht")) > (stop #~(make-kill-destructor)))) > > I'm not sure how using such basic building blocks could lead to a hang > in Shepherd ? After much trial and error, the service can be made to not hang Shepherd with the removal of the mappings argument: --8<---------------cut here---------------start------------->8--- modified gnu/services/networking.scm @@ -845,9 +845,9 @@ CONFIG, an object." (requirement '(user-processes networking syslogd)) (start #~(make-forkexec-constructor/container (list #$@(opendht-configuration->command-line-arguments config)) - #:mappings (list (file-system-mapping - (source "/dev/log") ;for syslog - (target source))) + ;; #:mappings (list (file-system-mapping + ;; (source "/dev/log") ;for syslog + ;; (target source))) #:user "opendht")) (stop #~(make-kill-destructor)))) --8<---------------cut here---------------end--------------->8--- I have no idea why that is, but given that the tor-service-type does the same thing, I can only conclude that it is some strange interaction between dhtnode and syslog. The above fixes the hang, but breaks logging to syslog. Ideas? Maxim From debbugs-submit-bounces@debbugs.gnu.org Wed May 19 22:52:14 2021 Received: (at 48521-done) by debbugs.gnu.org; 20 May 2021 02:52:14 +0000 Received: from localhost ([127.0.0.1]:60994 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljYnG-0001Tn-Jb for submit@debbugs.gnu.org; Wed, 19 May 2021 22:52:14 -0400 Received: from mail-qt1-f171.google.com ([209.85.160.171]:34589) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ljYnF-0001TZ-4v for 48521-done@debbugs.gnu.org; Wed, 19 May 2021 22:52:13 -0400 Received: by mail-qt1-f171.google.com with SMTP id v4so11794125qtp.1 for <48521-done@debbugs.gnu.org>; Wed, 19 May 2021 19:52:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:references:date:in-reply-to:message-id:user-agent :mime-version; bh=LgC9vbLDtX+a7WROXApbuADKzP/XOZYBT2Gb203iUew=; b=faklIuPB/cUa8SgsmR6DPyNa1bCSGLuAB1MR9biVzQ6wdsjO+OmveoB0EvVk0JWUh0 HyrLQ0uiSaZ24LYiiHykvQM7Rn4zvQajSoFZweAwKiItLjEyNHQDlN2K+coJdzVqR85H VoavNE0Bl8wS4O5A/QARxcGl+LoAF4/zXDI0ne7dU1wqHG+3flRAKJA2iZMIy5B+gdrb o54FnoN0MDF/HQGn2ysZ7ghUZR743ovFN/KRDNkwTzuU8s+vnqzWuCvMgGiBa9raTGRi e8VIlP/hioynPKnw+91GSHATkq/j1gqkrg3z6VYAGX9xG4VstJD8+wJIQXj2B694DQye bQGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=LgC9vbLDtX+a7WROXApbuADKzP/XOZYBT2Gb203iUew=; b=iCoo3i1LFyZ2/vSnjZet47FyjRPMgOH7Wq72pZHT5CpyGWNO6OFsEZWmLGWDm7z6ZU qNP+hEkLx8akmf9reM77nsPWiLPuJGeBLR5nxoIchf4GZ/nNWM1K5b5o2+SH8o8CDZcH SyfFJde9+8dA+p7ER28ak/3hJUuozCp2NG9oKt2C734jC4m7+98thTmCnpyHN+yB/5z/ f2phMYTYmfWJ107s5R0vBs+oioXDqDeph5xtQ9fJz4KptM3dAifs3iEiVleqmN+sRIWh nYerGP/VqR8dt5oeQNAGlMNQLWNfvOuuhuOHtM81I+yyVCpQtZ8vkKZg7Y0gZ1sx3Cuz qFcw== X-Gm-Message-State: AOAM531OxM6j1eIJ/u8J3D/78ej9cbRfPfgr31N6h40JCW43c8Dc+6du jOCIhkU70npmmS5jOzIaMxioatFQPVk= X-Google-Smtp-Source: ABdhPJxUHNXNZnJscmuGwUPvTuE0d56OycpKhEpqSMRRXhK4LqL2TC5ybHzPSKlKoBQzjcqWUHvawQ== X-Received: by 2002:a05:622a:1044:: with SMTP id f4mr2918434qte.181.1621479127142; Wed, 19 May 2021 19:52:07 -0700 (PDT) Received: from hurd (dsl-150-81.b2b2c.ca. [66.158.150.81]) by smtp.gmail.com with ESMTPSA id u3sm1060811qtg.16.2021.05.19.19.52.06 for <48521-done@debbugs.gnu.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 May 2021 19:52:06 -0700 (PDT) From: Maxim Cournoyer To: 48521-done@debbugs.gnu.org Subject: Re: bug#48521: opendht-service-type hangs Shepherd at boot References: <874kezhr3c.fsf@gmail.com> Date: Wed, 19 May 2021 22:52:06 -0400 In-Reply-To: <874kezhr3c.fsf@gmail.com> (Maxim Cournoyer's message of "Wed, 19 May 2021 07:59:19 -0400") Message-ID: <87v97eglrd.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 48521-done X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) Hello, Maxim Cournoyer writes: > Hello, > > I just noticed about this problem following a reboot. I can also > reproduce it in 'guix system vm', simply adding the opendht-service-type > to my operating-system declaration. > > The boot proceeds until 'error in finalization thread: Success' then > hangs indefinitely. > > What is troubling for me is that the service is rather straightforwardly > defined. It uses the make-forkexec-constructor/container like so: > > (define (opendht-shepherd-service config) > "Return a running OpenDHT." > (shepherd-service > (documentation "Run an OpenDHT node.") > (provision '(opendht dhtnode dhtproxy)) > (requirement '(user-processes syslogd)) > (start #~(make-forkexec-constructor/container > (list #$@(opendht-configuration->command-line-arguments config)) > #:mappings (list (file-system-mapping > (source "/dev/log") ;for syslog > (target source))) > #:user "opendht")) > (stop #~(make-kill-destructor)))) > > I'm not sure how using such basic building blocks could lead to a hang > in Shepherd ? It seems Shepherd can't cope with a failing start procedure/script when a variable was not bound. To diagnose the problem, the best way ended up being to extract the code of the constructor in a separate script to run it separately. This made the error quickly apparent: "Unbound variable: file-system-mapping". We should try to handle this class of errors in Shepherd and report a useful message and *not* crash Shepherd or otherwise hang. Pushed with commit a09cdf1f9d. Closing. Maxim From unknown Thu Jun 19 14:23:01 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Thu, 17 Jun 2021 11:24:07 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator