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[81.194.30.209]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4532e256d95sm141420535e9.31.2025.06.16.04.49.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Jun 2025 04:49:33 -0700 (PDT) From: Simon Tournier <zimon.toutoune@HIDDEN> To: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=) Subject: Re: bug#30986: =?utf-8?Q?=E2=80=98guix_substitute=E2=80=99?= spins forever In-Reply-To: <87po3mvrjj.fsf@HIDDEN> ("Ludovic =?utf-8?Q?Court=C3=A8s=22'?= =?utf-8?Q?s?= message of "Thu, 29 Mar 2018 17:18:40 +0200") References: <87po3mvrjj.fsf@HIDDEN> Date: Mon, 16 Jun 2025 12:05:37 +0200 Message-ID: <87ldps80i6.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 30986 Cc: 30986 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hi Ludo, Digging into the bug tracker for some triage, I hit this: https://issues.guix.gnu.org/issue/30986 and it reminds me our recent discussion here: https://codeberg.org/guix/guix/issues/430 WDYT? On Thu, 29 Mar 2018 at 17:18, ludo@HIDDEN (Ludovic Court=C3=A8s) wrote: > I=E2=80=99ve stumbled upon a situation where =E2=80=98guix substitute=E2= =80=99 would spin > endlessly. Tracing the =E2=80=98guix substitute=E2=80=99 process shows t= hat the > following two =E2=80=9Cinfo=E2=80=9D queries would happen in a loop: > > read(0, "info /gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0 \n", = 4096) =3D 60 > openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn= 3hwbhxey3r7suq2a65qr2ulq/cwmia787gmr4pypna6na1nfirqlr8y0p", O_RDONLY) =3D 13 > fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D1288, ...}) =3D 0 > lseek(13, 0, SEEK_CUR) =3D 0 > read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") = (date 1522315393) (ttl 3888000) (value \"StorePath: /gnu/store/cwmia787gmr4= pypna6na1nfirqlr8y0p-gcc-5.5.0\\nURL: nar/gzip/cwmia787gmr4pypna6na1nfirqlr= 8y0p-gcc-5.5.0\\nCompression: gzip\\nNarHash: sha256:039i94jrmfsvn859kjarcm= qzabs3nspmbz912gy03p0v6n64dr56\\nNarSize: 98156824\\nReferences: 03j2yq30pc= d2h17np0liarb2jdijg8y4-bash-static-4.4.19 6v2lw5wkb36lwcky5x4i5ris08jabihs-= glibc-2.27 asm7j8dm594ljjv"..., 4096) =3D 1288 > close(13) =3D 0 > write(1, "/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0\n", 54) = =3D 54 > write(1, "/gnu/store/rvmhl8kb58zsj6pg2i2ha8f1dmx8wvm6-gcc-5.5.0.drv\n", 5= 8) =3D 58 > write(1, "5\n", 2) =3D 2 > write(1, "/gnu/store/03j2yq30pcd2h17np0liarb2jdijg8y4-bash-static-4.4.19\= n", 63) =3D 63 > write(1, "/gnu/store/6v2lw5wkb36lwcky5x4i5ris08jabihs-glibc-2.27\n", 55) = =3D 55 > write(1, "/gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib\n", 5= 8) =3D 58 > write(1, "/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0\n", 54) = =3D 54 > write(1, "/gnu/store/s4nzclq0ma3v19lvg84z8c7nqys9w3ai-zlib-1.2.11\n", 56)= =3D 56 > write(1, "35550259\n", 9) =3D 9 > write(1, "98156824\n", 9) =3D 9 > write(1, "\n", 1) =3D 1 > read(0, "info /gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib \= n", 4096) =3D 64 > openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn= 3hwbhxey3r7suq2a65qr2ulq/asm7j8dm594ljjvs0x90h8qivl5qdaz8", O_RDONLY) =3D 13 > fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D100, ...}) =3D 0 > lseek(13, 0, SEEK_CUR) =3D 0 > read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") = (date 1522315402) (ttl 300) (value #f))", 4096) =3D 100 > close(13) =3D 0 > openat(AT_FDCWD, "/var/guix/substitute/cache/s3o7shxygzvof4rs6c3ed5hfifav= py43khzg5fyjdmrnlfk3b7va/asm7j8dm594ljjvs0x90h8qivl5qdaz8", O_RDONLY) =3D 13 > fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D105, ...}) =3D 0 > lseek(13, 0, SEEK_CUR) =3D 0 > read(13, "(narinfo (version 2) (cache-uri \"https://mirror.hydra.gnu.org\= ") (date 1522315667) (ttl 10800) (value #f))", 4096) =3D 105 > close(13) =3D 0 > write(1, "\n", 1) =3D 1 > > > The two store items being requested are outputs of the same derivations: > > $ head -c200 /gnu/store/rvmhl8kb58zsj6pg2i2ha8f1dmx8wvm6-gcc-5.5.0.drv > Derive([("lib","/gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib= ","",""),("out","/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0","",= "")],[("/gnu/store/0iwkdrk73cgpj1bq8jd66i8aca5hcm5v- > > > Another time, something similar happened in the middle of a series of > downloads: > > @ substituter-succeeded /gnu/store/wlkhfzz67h4wc3spj2fy8cvqaq8c60il-pkg-c= onfig-0.29.2 > substitute: updating list of substitutes from 'https://berlin.guixsd.org'= ... 100.0% > substitute: updating list of substitutes from 'https://mirror.hydra.gnu.o= rg'... 100.0% > @ substituter-started /gnu/store/68yb572zpkn26skh2dp1z91w2dnmrzzb-libgc-7= .6.4 /gnu/store/fbpk1zjcqd6p4ny8qx48mvlp4v7qfmld-guix-0.14.0-9.bdf0c64/libe= xec/guix/substitute > Downloading https://berlin.guixsd.org/nar/gzip/68yb572zpkn26skh2dp1z91w2d= nmrzzb-libgc-7.6.4... > libgc-7.6.4 398KiB = = 2.2MiB/s 00= :00 [##################] 100.0% > > @ substituter-succeeded /gnu/store/68yb572zpkn26skh2dp1z91w2dnmrzzb-libgc= -7.6.4 > substitute: updating list of substitutes from 'https://berlin.guixsd.org'= ... 100.0% > > [=E2=80=A6 hangs here=E2=80=A6] > > > While it=E2=80=99s hanging, =E2=80=98guix substitute=E2=80=99 receives th= is one query in a loop: > > read(0, "info /gnu/store/w91m22j33vxj3vvfa8lv04qjansdzr0d-libgc-7.6.4-deb= ug \n", 4096) =3D 68 > openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn= 3hwbhxey3r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d", O_RDONLY) =3D 13 > fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D100, ...}) =3D 0 > lseek(13, 0, SEEK_CUR) =3D 0 > read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") = (date 1522315814) (ttl 300) (value #f))", 4096) =3D 100 > close(13) =3D 0 > openat(AT_FDCWD, "/var/guix/substitute/cache/s3o7shxygzvof4rs6c3ed5hfifav= py43khzg5fyjdmrnlfk3b7va/w91m22j33vxj3vvfa8lv04qjansdzr0d", O_RDONLY) =3D 13 > fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D105, ...}) =3D 0 > lseek(13, 0, SEEK_CUR) =3D 0 > read(13, "(narinfo (version 2) (cache-uri \"https://mirror.hydra.gnu.org\= ") (date 1522315814) (ttl 10800) (value #f))", 4096) =3D 105 > close(13) =3D 0 > write(1, "\n", 1) =3D 1 > > > To unlock it, I did: > > $ sudo rm "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3hwbhxe= y3r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d" > # =E2=80=A6 narinfo gets redownloaded and file gets regenerated: > $ sudo cat "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3hwbhx= ey3r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d" > (narinfo (version 2) (cache-uri "https://berlin.guixsd.org") (date 152231= 6403) (ttl 3888000) (value "StorePath: /gnu/store/w91m22j33vxj3vvfa8lv04qja= nsdzr0d-libgc-7.6.4-debug\nURL: nar/gzip/w91m22j33vxj3vvfa8lv04qjansdzr0d-l= ibgc-7.6.4-debug\nCompression: gzip\nNarHash: sha256:0jrrknph5qs3n8v1prmmx4= pgixhhdnqjh04i066c3fp12yx35hb7\nNarSize: 1462960\nReferences: 68yb572zpkn26= skh2dp1z91w2dnmrzzb-libgc-7.6.4 6v2lw5wkb36lwcky5x4i5ris08jabihs-glibc-2.27= asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib cwmia787gmr4pypna6na1nfirql= r8y0p-gcc-5.5.0 fbclk7l7fn4qh6nwi1xl1wbszhhj6yfd-libatomic-ops-7.6.2\nFileS= ize: 543891\nSystem: x86_64-linux\nDeriver: 9c7ilc15k8p5b84lxhgn2jy6l6xgbdp= j-libgc-7.6.4.drv\nSignature: 1;berlin.guixsd.org;KHNpZ25hdHVyZSAKIChkYXRhI= AogIChmbGFncyByZmM2OTc5KQogIChoYXNoIHNoYTI1NiAjRTBGRUExNkQ5ODU5Mjk1QjQ4N0Iw= OTc2RTVFRkIxNDUzRTdCOUVFNkJBNUFBRkY5NUFEQTg1REY5QUJENkI4QSMpCiAgKQogKHNpZy1= 2YWwgCiAgKGVjZHNhIAogICAociAjMDY0MkZCQUYwRDExNDM2NTc3NUY1QTI2REU3NDYyOTMyQz= g5RjhCM0U4RDg5MzQ4MzRBNTQwRDAwMEVBQTk5QiMpCiAgIChzICMwMzQ1RUFCMDM1MzBEMzRFO= TEwNzVFMzFFMUFENjM4OEI3NDAwRTQxRjRBOTExRjg0RDE0NEQ3M0QxMkVCMzY5IykKICAgKQog= ICkKIChwdWJsaWMta2V5IAogIChlY2MgCiAgIChjdXJ2ZSBFZDI1NTE5KQogICAocSAjOEQxNTZ= GMjk1RDI0QjBEOUE4NkZBNTc0MUE4NDBGRjJEMjRGNjBGN0I2QzQxMzQ4MTRBRDU1NjI1OTcxQj= M5NCMpCiAgICkKICApCiApCg=3D=3D\n")) > > =E2=80=A6 and the daemon went on to substitute libgc-7.6.4-debug. > > This apparently has to do with multiple-output derivations where not all > of the outputs are substitutable. The loop could come from > SubstitutionGoal::tryNext, which recurses: > > SubstitutablePathInfos infos; > PathSet dummy(singleton<PathSet>(storePath)); > worker.store.querySubstitutablePathInfos(sub, dummy, infos); > SubstitutablePathInfos::iterator k =3D infos.find(storePath); > if (k =3D=3D infos.end()) { tryNext(); return; } > info =3D k->second; > hasSubstitute =3D true; BTW, if it appears to you unrelated, what is the status of this old bug with only one message? :-) Cheers, simon
bug-guix@HIDDEN
:bug#30986
; Package guix
.
Full text available.Received: (at submit) by debbugs.gnu.org; 29 Mar 2018 15:19:00 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 29 11:19:00 2018 Received: from localhost ([127.0.0.1]:58822 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1f1ZKO-0004qA-Bm for submit <at> debbugs.gnu.org; Thu, 29 Mar 2018 11:19:00 -0400 Received: from eggs.gnu.org ([208.118.235.92]:34805) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1f1ZKM-0004px-7x for submit <at> debbugs.gnu.org; Thu, 29 Mar 2018 11:18:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f1ZKF-0006VK-8x for submit <at> debbugs.gnu.org; Thu, 29 Mar 2018 11:18:52 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,T_RP_MATCHES_RCVD, WEIRD_QUOTING autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:47939) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f1ZKF-0006Ur-5C for submit <at> debbugs.gnu.org; Thu, 29 Mar 2018 11:18:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54003) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f1ZKC-0008JN-PT for bug-guix@HIDDEN; Thu, 29 Mar 2018 11:18:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f1ZK8-0006Nr-Nz for bug-guix@HIDDEN; Thu, 29 Mar 2018 11:18:48 -0400 Received: from hera.aquilenet.fr ([2a0c:e300::1]:51140) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <ludo@HIDDEN>) id 1f1ZK8-0006Lw-DH for bug-guix@HIDDEN; Thu, 29 Mar 2018 11:18:44 -0400 Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id AB8AB12AF3 for <bug-guix@HIDDEN>; Thu, 29 Mar 2018 17:18:42 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2lWRHn25yAio for <bug-guix@HIDDEN>; Thu, 29 Mar 2018 17:18:41 +0200 (CEST) Received: from ribbon (unknown [193.50.110.67]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 6CEAC12AF2 for <bug-guix@HIDDEN>; Thu, 29 Mar 2018 17:18:41 +0200 (CEST) From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=) To: bug-guix@HIDDEN Subject: =?utf-8?Q?=E2=80=98guix_substitute=E2=80=99?= spins forever X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 9 Germinal an 226 de la =?utf-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Thu, 29 Mar 2018 17:18:40 +0200 Message-ID: <87po3mvrjj.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -5.0 (-----) I=E2=80=99ve stumbled upon a situation where =E2=80=98guix substitute=E2=80= =99 would spin endlessly. Tracing the =E2=80=98guix substitute=E2=80=99 process shows tha= t the following two =E2=80=9Cinfo=E2=80=9D queries would happen in a loop: --8<---------------cut here---------------start------------->8--- read(0, "info /gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0 \n", 40= 96) =3D 60 openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3h= wbhxey3r7suq2a65qr2ulq/cwmia787gmr4pypna6na1nfirqlr8y0p", O_RDONLY) =3D 13 fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D1288, ...}) =3D 0 lseek(13, 0, SEEK_CUR) =3D 0 read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") (d= ate 1522315393) (ttl 3888000) (value \"StorePath: /gnu/store/cwmia787gmr4py= pna6na1nfirqlr8y0p-gcc-5.5.0\\nURL: nar/gzip/cwmia787gmr4pypna6na1nfirqlr8y= 0p-gcc-5.5.0\\nCompression: gzip\\nNarHash: sha256:039i94jrmfsvn859kjarcmqz= abs3nspmbz912gy03p0v6n64dr56\\nNarSize: 98156824\\nReferences: 03j2yq30pcd2= h17np0liarb2jdijg8y4-bash-static-4.4.19 6v2lw5wkb36lwcky5x4i5ris08jabihs-gl= ibc-2.27 asm7j8dm594ljjv"..., 4096) =3D 1288 close(13) =3D 0 write(1, "/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0\n", 54) =3D= 54 write(1, "/gnu/store/rvmhl8kb58zsj6pg2i2ha8f1dmx8wvm6-gcc-5.5.0.drv\n", 58)= =3D 58 write(1, "5\n", 2) =3D 2 write(1, "/gnu/store/03j2yq30pcd2h17np0liarb2jdijg8y4-bash-static-4.4.19\n"= , 63) =3D 63 write(1, "/gnu/store/6v2lw5wkb36lwcky5x4i5ris08jabihs-glibc-2.27\n", 55) = =3D 55 write(1, "/gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib\n", 58)= =3D 58 write(1, "/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0\n", 54) =3D= 54 write(1, "/gnu/store/s4nzclq0ma3v19lvg84z8c7nqys9w3ai-zlib-1.2.11\n", 56) = =3D 56 write(1, "35550259\n", 9) =3D 9 write(1, "98156824\n", 9) =3D 9 write(1, "\n", 1) =3D 1 read(0, "info /gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib \n"= , 4096) =3D 64 openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3h= wbhxey3r7suq2a65qr2ulq/asm7j8dm594ljjvs0x90h8qivl5qdaz8", O_RDONLY) =3D 13 fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D100, ...}) =3D 0 lseek(13, 0, SEEK_CUR) =3D 0 read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") (d= ate 1522315402) (ttl 300) (value #f))", 4096) =3D 100 close(13) =3D 0 openat(AT_FDCWD, "/var/guix/substitute/cache/s3o7shxygzvof4rs6c3ed5hfifavpy= 43khzg5fyjdmrnlfk3b7va/asm7j8dm594ljjvs0x90h8qivl5qdaz8", O_RDONLY) =3D 13 fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D105, ...}) =3D 0 lseek(13, 0, SEEK_CUR) =3D 0 read(13, "(narinfo (version 2) (cache-uri \"https://mirror.hydra.gnu.org\")= (date 1522315667) (ttl 10800) (value #f))", 4096) =3D 105 close(13) =3D 0 write(1, "\n", 1) =3D 1 --8<---------------cut here---------------end--------------->8--- The two store items being requested are outputs of the same derivations: --8<---------------cut here---------------start------------->8--- $ head -c200 /gnu/store/rvmhl8kb58zsj6pg2i2ha8f1dmx8wvm6-gcc-5.5.0.drv Derive([("lib","/gnu/store/asm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib",= "",""),("out","/gnu/store/cwmia787gmr4pypna6na1nfirqlr8y0p-gcc-5.5.0","",""= )],[("/gnu/store/0iwkdrk73cgpj1bq8jd66i8aca5hcm5v- --8<---------------cut here---------------end--------------->8--- Another time, something similar happened in the middle of a series of downloads: --8<---------------cut here---------------start------------->8--- @ substituter-succeeded /gnu/store/wlkhfzz67h4wc3spj2fy8cvqaq8c60il-pkg-con= fig-0.29.2 substitute: updating list of substitutes from 'https://berlin.guixsd.org'..= . 100.0% substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org= '... 100.0% @ substituter-started /gnu/store/68yb572zpkn26skh2dp1z91w2dnmrzzb-libgc-7.6= .4 /gnu/store/fbpk1zjcqd6p4ny8qx48mvlp4v7qfmld-guix-0.14.0-9.bdf0c64/libexe= c/guix/substitute Downloading https://berlin.guixsd.org/nar/gzip/68yb572zpkn26skh2dp1z91w2dnm= rzzb-libgc-7.6.4... libgc-7.6.4 398KiB = = 2.2MiB/s 00:0= 0 [##################] 100.0% @ substituter-succeeded /gnu/store/68yb572zpkn26skh2dp1z91w2dnmrzzb-libgc-7= .6.4 substitute: updating list of substitutes from 'https://berlin.guixsd.org'..= . 100.0% [=E2=80=A6 hangs here=E2=80=A6] --8<---------------cut here---------------end--------------->8--- While it=E2=80=99s hanging, =E2=80=98guix substitute=E2=80=99 receives this= one query in a loop: --8<---------------cut here---------------start------------->8--- read(0, "info /gnu/store/w91m22j33vxj3vvfa8lv04qjansdzr0d-libgc-7.6.4-debug= \n", 4096) =3D 68 openat(AT_FDCWD, "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3h= wbhxey3r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d", O_RDONLY) =3D 13 fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D100, ...}) =3D 0 lseek(13, 0, SEEK_CUR) =3D 0 read(13, "(narinfo (version 2) (cache-uri \"https://berlin.guixsd.org\") (d= ate 1522315814) (ttl 300) (value #f))", 4096) =3D 100 close(13) =3D 0 openat(AT_FDCWD, "/var/guix/substitute/cache/s3o7shxygzvof4rs6c3ed5hfifavpy= 43khzg5fyjdmrnlfk3b7va/w91m22j33vxj3vvfa8lv04qjansdzr0d", O_RDONLY) =3D 13 fstat(13, {st_mode=3DS_IFREG|0600, st_size=3D105, ...}) =3D 0 lseek(13, 0, SEEK_CUR) =3D 0 read(13, "(narinfo (version 2) (cache-uri \"https://mirror.hydra.gnu.org\")= (date 1522315814) (ttl 10800) (value #f))", 4096) =3D 105 close(13) =3D 0 write(1, "\n", 1) =3D 1 --8<---------------cut here---------------end--------------->8--- To unlock it, I did: --8<---------------cut here---------------start------------->8--- $ sudo rm "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3hwbhxey3= r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d" # =E2=80=A6 narinfo gets redownloaded and file gets regenerated: $ sudo cat "/var/guix/substitute/cache/bzh2rehitrzflwj2f3tcyt25s7xn3hwbhxey= 3r7suq2a65qr2ulq/w91m22j33vxj3vvfa8lv04qjansdzr0d" (narinfo (version 2) (cache-uri "https://berlin.guixsd.org") (date 15223164= 03) (ttl 3888000) (value "StorePath: /gnu/store/w91m22j33vxj3vvfa8lv04qjans= dzr0d-libgc-7.6.4-debug\nURL: nar/gzip/w91m22j33vxj3vvfa8lv04qjansdzr0d-lib= gc-7.6.4-debug\nCompression: gzip\nNarHash: sha256:0jrrknph5qs3n8v1prmmx4pg= ixhhdnqjh04i066c3fp12yx35hb7\nNarSize: 1462960\nReferences: 68yb572zpkn26sk= h2dp1z91w2dnmrzzb-libgc-7.6.4 6v2lw5wkb36lwcky5x4i5ris08jabihs-glibc-2.27 a= sm7j8dm594ljjvs0x90h8qivl5qdaz8-gcc-5.5.0-lib cwmia787gmr4pypna6na1nfirqlr8= y0p-gcc-5.5.0 fbclk7l7fn4qh6nwi1xl1wbszhhj6yfd-libatomic-ops-7.6.2\nFileSiz= e: 543891\nSystem: x86_64-linux\nDeriver: 9c7ilc15k8p5b84lxhgn2jy6l6xgbdpj-= libgc-7.6.4.drv\nSignature: 1;berlin.guixsd.org;KHNpZ25hdHVyZSAKIChkYXRhIAo= gIChmbGFncyByZmM2OTc5KQogIChoYXNoIHNoYTI1NiAjRTBGRUExNkQ5ODU5Mjk1QjQ4N0IwOT= c2RTVFRkIxNDUzRTdCOUVFNkJBNUFBRkY5NUFEQTg1REY5QUJENkI4QSMpCiAgKQogKHNpZy12Y= WwgCiAgKGVjZHNhIAogICAociAjMDY0MkZCQUYwRDExNDM2NTc3NUY1QTI2REU3NDYyOTMyQzg5= RjhCM0U4RDg5MzQ4MzRBNTQwRDAwMEVBQTk5QiMpCiAgIChzICMwMzQ1RUFCMDM1MzBEMzRFOTE= wNzVFMzFFMUFENjM4OEI3NDAwRTQxRjRBOTExRjg0RDE0NEQ3M0QxMkVCMzY5IykKICAgKQogIC= kKIChwdWJsaWMta2V5IAogIChlY2MgCiAgIChjdXJ2ZSBFZDI1NTE5KQogICAocSAjOEQxNTZGM= jk1RDI0QjBEOUE4NkZBNTc0MUE4NDBGRjJEMjRGNjBGN0I2QzQxMzQ4MTRBRDU1NjI1OTcxQjM5= NCMpCiAgICkKICApCiApCg=3D=3D\n")) --8<---------------cut here---------------end--------------->8--- =E2=80=A6 and the daemon went on to substitute libgc-7.6.4-debug. This apparently has to do with multiple-output derivations where not all of the outputs are substitutable. The loop could come from SubstitutionGoal::tryNext, which recurses: SubstitutablePathInfos infos; PathSet dummy(singleton<PathSet>(storePath)); worker.store.querySubstitutablePathInfos(sub, dummy, infos); SubstitutablePathInfos::iterator k =3D infos.find(storePath); if (k =3D=3D infos.end()) { tryNext(); return; } info =3D k->second; hasSubstitute =3D true; Ludo=E2=80=99.
ludo@HIDDEN (Ludovic Courtès)
:bug-guix@HIDDEN
.
Full text available.bug-guix@HIDDEN
:bug#30986
; Package guix
.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.