Hi, zimoun <zimon.touto...@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’.
