From: "Ludovic Courtès" <ludo@gnu.org>
To: zimoun <zimon.toutoune@gmail.com>
Cc: guix-devel <guix-devel@gnu.org>
Subject: Re: Unreproducible “guix pack -f docker” because config.scm-builder
Date: Sat, 06 Feb 2021 22:46:22 +0100 [thread overview]
Message-ID: <87k0rkzx75.fsf@gnu.org> (raw)
In-Reply-To: <86lfc2bfb1.fsf@gmail.com> (zimoun's message of "Fri, 05 Feb 2021 18:22:10 +0100")
Hi,
zimoun <zimon.toutoune@gmail.com> skribis:
> First on Debian and second on Ubuntu
>
> $ stat /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V6_LP64_OFF64
> File: /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V6_LP64_OFF64
> Size: 29960 Blocks: 64 IO Block: 4096 regular file
> Device: 801h/2049d Inode: 8129616 Links: 5
> Access: (0555/-r-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
> Access: 2021-02-05 17:37:15.728728952 +0100
> Modify: 1970-01-01 01:00:01.000000000 +0100
> Change: 2020-06-17 12:40:06.389935679 +0200
> Birth: -
>
> $ stat /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V6_LP64_OFF64
> Fichier : /gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V6_LP64_OFF64
> Taille : 29960 Blocs : 64 Blocs d'E/S : 4096 fichier
> Périphérique : 814h/2068d Inœud : 148900093 Liens : 1
> Accès : (0555/-r-xr-xr-x) UID : ( 0/ root) GID : ( 0/ root)
> Accès : 2021-02-05 17:46:05.537903382 +0100
> Modif. : 1970-01-01 01:00:01.000000000 +0100
> Changt : 2020-12-04 23:16:33.155711694 +0100
> Créé : -
See? One has just 1 link (did you disable deduplication on that one?),
there other has 5 links.
>> I wonder if it could be that tar nowadays decides to preserve hard links
>> by default and one of your machine had this file hard-linked while the
>> other one didn’t.
>
> Wow, I thought that the same tar was used the one provided by Guix and
> not by the host. For sure the default tar are not the same on both
> machine (v1.30 for Debian and v1.29 for Ubuntu).
>
> What is the md5sum checksum of ’guix pack -f docker hello’ on Guix
> System for commit b9a54aa?
--8<---------------cut here---------------start------------->8---
$ md5sum $(guix time-machine --commit=b9a54aa -- pack -f docker hello)
b5fe393d7966cbc3cd0be6e51d3aedc3 /gnu/store/nkvlqwzvxdlhzlc7vhfcngxc19x2ay2f-docker-pack.tar.gz
$ sha1sum $(guix time-machine --commit=b9a54aa -- pack -f docker hello)
a4dff93de6c0bc65eb325ebfeea398ebea944a85 /gnu/store/nkvlqwzvxdlhzlc7vhfcngxc19x2ay2f-docker-pack.tar.gz
$ guix time-machine --commit=b9a54aa -- pack -f docker hello -d
/gnu/store/323k33sfx869d0nkh69ary8sj6xiy4s4-docker-pack.tar.gz.drv
$ (mkdir /tmp/docker; tar xf $(guix time-machine --commit=b9a54aa -- pack -f docker hello ); tar tvf */layer.tar | grep ^h | head)
hr-xr-xr-x root/root 0 1970-01-01 01:00 gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V6_LP64_OFF64 kunligo al gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/bin/getconf
hr-xr-xr-x root/root 0 1970-01-01 01:00 gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/POSIX_V7_LP64_OFF64 kunligo al gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/bin/getconf
hr-xr-xr-x root/root 0 1970-01-01 01:00 gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/libexec/getconf/XBS5_LP64_OFF64 kunligo al gnu/store/fa6wj5bxkj5ll1d7292a70knmyl7a0cr-glibc-2.31/bin/getconf
hr--r--r-- root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/crtendS.o kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/crtend.o
hr--r--r-- root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/install-tools/gsyslimits.h kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/include-fixed/syslimits.h
hr--r--r-- root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/install-tools/include/README kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/include-fixed/README
hr--r--r-- root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/install-tools/include/limits.h kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/include-fixed/limits.h
hr--r--r-- root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/plugin/include/gsyslimits.h kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/include-fixed/syslimits.h
hrwxrwxrwx root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/plugin/libcc1plugin.so.0 kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/plugin/libcc1plugin.so
hrwxrwxrwx root/root 0 1970-01-01 01:00 gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/plugin/libcp1plugin.so.0 kunligo al gnu/store/01b4w3m6mp55y531kyi1g8shh722kwqm-gcc-7.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/7.5.0/plugin/libcp1plugin.so
--8<---------------cut here---------------end--------------->8---
Most of these ‘h’ lines for hard links; ‘libcc1plugin.so’ seems to be an
exception (it’s a symlink).
Having looked at the tar manual (info "(tar) hard links"), it seems
clear that this is the default behavior and that we have to pass
‘--hard-dereference’ to avoid it.
Thanks,
Ludo’.
next prev parent reply other threads:[~2021-02-06 21:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210116182957.31075-1-ludo@gnu.org>
2021-01-27 13:14 ` bug#45919: [PATCH 0/8] Exporting a manifest and channels from a profile Ludovic Courtès
2021-01-27 21:02 ` [bug#45919] " zimoun
2021-01-28 15:54 ` Ludovic Courtès
2021-02-01 22:37 ` Unreproducible “guix pack -f docker” because config.scm-builder zimoun
2021-02-02 14:48 ` zimoun
2021-02-02 18:12 ` Ludovic Courtès
2021-02-02 20:11 ` zimoun
2021-02-05 10:09 ` Ludovic Courtès
2021-02-05 17:22 ` zimoun
2021-02-06 21:46 ` Ludovic Courtès [this message]
2021-02-08 18:44 ` [PATCH] Fix unreproducible “guix pack -f docker” (hard link) zimoun
[not found] ` <86lfbzad42.fsf@gmail.com>
2021-02-09 8:35 ` Unreproducible “guix pack -f docker” because config.scm-builder Ludovic Courtès
2021-02-09 8:51 ` zimoun
2021-01-28 17:57 ` [bug#45919] [PATCH 0/8] Exporting a manifest and channels from a profile Bengt Richter
2021-01-29 19:13 ` zimoun
2021-01-28 17:04 ` bug#45919: " Pierre Neidhardt
2021-01-29 17:57 ` [bug#45919] " Pierre Neidhardt
2021-01-29 18:57 ` zimoun
2021-01-29 21:51 ` Pierre Neidhardt
2021-01-30 14:31 ` zimoun
2021-01-30 21:23 ` bug#45919: " Ludovic Courtès
2021-01-31 5:08 ` Ryan Prior
2021-02-01 13:30 ` Ludovic Courtès
2021-01-30 13:55 ` Ludovic Courtès
2021-01-31 17:26 ` Pierre Neidhardt
2021-02-01 13:25 ` Ludovic Courtès
2021-02-01 15:32 ` Pierre Neidhardt
2021-02-01 17:04 ` Ludovic Courtès
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