The S/390 breakage fix coming to rawhide and f21 soon

[Siddhesh Poyarekar]

Hi,

I just noticed that the S/390 arch maintainer in upstream glibc has
pushed the patch to revert the ABI breakage he had introduced in 2.19.
This will hit rawhide next week (and f21 a bit later), so please let
me know if I can provide any extra assistance with this or if any
particular day or time is convenient for the rebase.

Siddhesh

[Dan Horák]

On Fri, 1 Aug 2014 00:19:08 +0530
Siddhesh Poyarekar <siddhesh(a)redhat.com&gt; wrote:

>  Hi,
>  
>  I just noticed that the S/390 arch maintainer in upstream glibc has
>  pushed the patch to revert the ABI breakage he had introduced in 2.19.
>  This will hit rawhide next week (and f21 a bit later), so please let
>  me know if I can provide any extra assistance with this or if any
>  particular day or time is convenient for the rebase. 
oh, that's actually very bad news, we have no mean to rebuild
everything just for s390, all rebuilds must be done first in primary.
So the next rebuild can happen for F-22 unless primary decides to do an
additional mass rebuild after the new glibc lands just for us. Isn't
there a way how to make the revert compatible with the version we have
now? I think we can't ship glibc in Fedora that would maintain
different ABI than all other distros, or could we?


		Dan

[Siddhesh Poyarekar]

On Thu, Jul 31, 2014 at 09:08:57PM +0200, Dan Horák wrote:
>  oh, that's actually very bad news, we have no mean to rebuild
>  everything just for s390, all rebuilds must be done first in primary. 
Ugh, that sucks.

>  So the next rebuild can happen for F-22 unless primary decides to do
> an
>  additional mass rebuild after the new glibc lands just for us. 
A mass rebuild is probably the best option.  I guess we could wait
till there either is another reason to do an additional mass rebuild.
If that doesn't happen till 2.20 is released, then we request a mass
rebuild in primary when 2.20 is released.

Either way, a mass rebuild seems inevitable, unless Carlos has a
better idea.

I assume a mass rebuild in rawhide is easier to request?

>  Isn't there a way how to make the revert compatible with the
> version
>  we have now?  
That would mean dropping that patch (i.e. reverting the revert), which
makes us incompatible with other distros.

>  I think we can't ship glibc in Fedora that would maintain
> different
>  ABI than all other distros, or could we? 
I'm guessing no, but it's just out of conservatism and I can't think
of a reason to back it.  I don't think we provide any ABI guarantees
for Fedora, but I am not aware of usage in s/390 to know if someone
expects such consistency across distros.  It might be an option to
consider if primary refuses to do a mass rebuild.

The other option would be to stay frozen at this point and never
really become 2.20, which is not a very nice thing, but not the end of
the world either.

Siddhesh