Re: Still reproducible images on rpm-ostree

[Leandro Santiago <leandrosansilva gmail com>]

Oh, BTW, I am on Centos 7

On 5 October 2015 at 11:49, Leandro Santiago <leandrosansilva gmail com> wrote:
> Well, I am still facing the issue where the initramfs file created
> during the tree compose phase is always different, therefore having
> different names, and making every update download a whole new file
> (which can up to 40MB in size) even if nothing was changed. The
> initial issue is described in this bug:
> https://bugzilla.redhat.com/show_bug.cgi?id=1235936
>
> It seems the main reason of this issue is that linux uses cpio for
> initramfs and the main implementation of cpio (that creates the
> images) cannot create deterministic images, as it stores the inodes of
> the input files. There is a patched version [1] of cpio which adds an
> --reproducible option and aims to reach those cases. The Guix
> developers also had the same issue, solving it on their cpio
> implementation [2]. Dracut also has a --reproducible option, which
> detects whether cpio supports that giver option.
>
> I haven't tested yet them, but I'd like to know if someone else is
> facing the same problem and if they'd solved it in another way.
>
> Thank you in advance.
>
> [1] https://copr.fedoraproject.org/coprs/harald/cpio-reproducible/
> [2] https://lists.gnu.org/archive/html/bug-cpio/2014-11/msg00004.html
>
> --
> Sent from my mind



-- 
Sent from my mind