[CentOS-devel] Module version differences between RHEL8 and Centos8?

> -----Original Message-----
> From: CentOS-devel <centos-devel-bounces at centos.org> On Behalf Of Josh
> Boyer
> Sent: Tuesday, 6 October 2020 14:20
> To: The CentOS developers mailing list. <centos-devel at centos.org>
> Subject: Re: [CentOS-devel] Module version differences between RHEL8 and
> Centos8?
> 
> CAUTION: Origin is external! The content might not be safe!
> 
> 
> On Mon, Oct 5, 2020 at 7:10 PM Antal Nemeš <Antal.Nemes at hycu.com>
> wrote:
> >
> > > -----Original Message-----
> > > From: CentOS-devel <centos-devel-bounces at centos.org> On Behalf Of
> > > Johnny Hughes
> > > Sent: Monday, 5 October 2020 16:53
> > > To: centos-devel at centos.org
> > > Subject: Re: [CentOS-devel] Module version differences between RHEL8
> > > and Centos8?
> > > >
> > >
> > > On 10/4/20 4:54 PM, Antal Nemeš wrote:
> > > > Is there any way to correlate modular package versions in RHEL8.x
> > > > with
> > > ones from Centos8.x in any way, no matter how difficult?
> > > >
> > > > For example, looking at package list for
> > > https://access.redhat.com/errata/RHSA-2020:3714:
> > > > - RedHat lists
> > > > httpd-2.4.37-21.module+el8.2.0+5008+cca404a3.x86_64.rpm
> > > > - in CentOS this (probably?) matches
> > > > httpd-0:2.4.37-21.module_el8.2.0+494+1df74eae.x86_64
> > > >
> > > > AFAIK, the non-modular packages shared the same NEVRA between
> RHEL
> > > and Centos (not sure if there were exceptions, though).
> > > >
> > >
> > > Modules are built by a new component called MBS (Module Build
> System) ..
> > > it works in conjunction with KOJI to do bulids.
> > >
> > > Because of MBS, exact module names are not possible between RHEL
> and
> > > CentOS.  This is because 2 things in MBS are generated at build time.
> > > One is an index number .. one is a commit hash from git.
> > >
> > > Since git.centos.org is a closed system and it's hashes will be
> > > different than the internal RHEL git repo .. the hashes will never match for
> commits.
> > >
> > > Also, since the CentOS MBS is a sperate system frmo the RHEL Build
> System ..
> > > the index number for build will also never be the same.
> > >
> > > Therefore, modules will never patch with exact names.
> > >
> >
> > Thanks, that explains a lot
> >
> > Doesn't the import of sources into git.centos.org represent state from
> internal RHEL repos that produced released RHEL packages?
> 
> It represents the SRPMs that are in the released RHEL packages.
> 
> > Does this import contain any kind of hash reference or any kind of identifier
> from RHEL repo, such that it could be used to link RHEL released modules
> with Centos?
> 
> It does not, because the source is pushed from SRPMs, not the internal RHEL
> git repositories.

Makes sense. But the names of src.rpm published by RHEL do contain index and commit hash, don't they?
E.g. from the link I referenced earlier at https://access.redhat.com/errata/RHSA-2020:3714 , src.rpm is httpd-2.4.37-21.module+el8.2.0+5008+cca404a3.src.rpm
Are these original src.rpm names lost during the import process?

> 
> josh
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