ODP: posix atime/ctime changes despite mtime being set

[Piotr Łobacz]

I'm sorry but it occurs that in some cases it does not work. The diffoscope is here:

https://autobuilder.yocto.io/pub/repro-fail/oe-reproducible-20230724-5av30jl8/packages/diff-html/

Question is what might be causing this kind of state?

BR

Piotr

---

Od: Paul Eggert <eggert@cs.ucla.edu>
Wysłane: poniedziałek, 24 lipca 2023 23:50
Do: Sergey Poznyakoff <gray@gnu.org.ua>
DW: bug-tar@gnu.org <bug-tar@gnu.org>; Piotr Łobacz <p.lobacz@welotec.com>
Temat: Re: posix atime/ctime changes despite mtime being set

 

This info is scattered around the tar manual and that it'd be helpful to
have a single section telling people how to create reproducible
tarballs, especially since the topic is so tricky. I installed the
attached patch to try to do that. Further improvements welcome.

It should be easier to create a reproducible tarball. Perhaps we should
add a "--reproducible" option? (Unfortunately it would need suboptions,
as not everyone agrees what "reproducible" means. Plus, some things are
out of tar's control, as can be seen in the attached....)