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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <877d8r4etz.fsf@gnu.org> <87ttsrbvb2.fsf@gmail.com> Date: Tue, 22 Aug 2023 22:38:24 +0200 In-Reply-To: <87ttsrbvb2.fsf@gmail.com> (Maxim Cournoyer's message of "Mon, 21 Aug 2023 23:38:41 -0400") Message-ID: <871qfu4xtr.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Scanner: mx2.migadu.com X-Migadu-Spam-Score: -6.90 X-Spam-Score: -6.90 X-Migadu-Queue-Id: A969C5389B X-TUID: nMMA3/OXzRGP Hi, Maxim Cournoyer skribis: > Looking at multiple of recent 'cannot build missing derivation' build > failures on Cuirass, I see for example: > > substitute:=20 > substitute: [Kupdating substitutes from 'http://141.80.167.131'... 0.0% > substitute: [Kcould not fetch http://141.80.167.131/rhgrs3ac6h64siz0krqh2= ia8kkn3h6ym.narinfo 504 > substitute: updating substitutes from 'http://141.80.167.131'... 100.0% > cannot build missing derivation ?/gnu/store/rhgrs3ac6h64siz0krqh2ia8kkn3h= 6ym-python-asdf-standard-1.0.3.drv? > > > So it seems the error originated from guix-publish being too heavily > under load to produce a timely reply, and the nginx proxy issued a 504 > (timeout) error response. > > Looking into /var/log/guix-publish.log for a corresponding entry, I > found: > > 2023-08-21 23:59:35 GET /rhgrs3ac6h64siz0krqh2ia8kkn3h6ym.narinfo > 2023-08-21 23:59:35 In web/server/http.scm: > 2023-08-21 23:59:35 159:7 2 (http-write #< socket: # =E2=80=A6) > 2023-08-21 23:59:35 In unknown file: > 2023-08-21 23:59:35 1 (put-bytevector # #vu8(83 # =E2=80=A6) =E2=80=A6) > 2023-08-21 23:59:35 In ice-9/boot-9.scm: > 2023-08-21 23:59:35 1685:16 0 (raise-exception _ #:continuable? _) > 2023-08-21 23:59:35 In procedure fport_write: Broken pipe > > > So the connection was apparently severed (?), resulting in the "broken > pipe" error. I think it=E2=80=99s just that, when =E2=80=98guix publish=E2=80=99 eventua= lly replied, the client had left, hence EPIPE. The initial problem does look like =E2=80=98guix publish=E2=80=99 being too= slow. Do the corresponding nginx logs confirm the =E2=80=9Cbackend too slow =3D> 504= =E2=80=9D hypothesis? Thanks for investigating! Ludo=E2=80=99.