Re: [gentoo-sparc] Official SPARC64 Port

[Mike Frysinger]

On 13 Feb 2016 16:26, Alex McWhirter wrote:
> On 02/13/2016 12:32 PM, Alex McWhirter wrote:
> > On 02/13/2016 06:25 AM, Mike Frysinger wrote:
> >> On 13 Feb 2016 04:26, Alex McWhirter wrote:
> >>> Well, time for more fun
> >>>
> >>> Copying over the 3.4.14 kernel from the install cd will make rsync work.
> >>>
> >>> Kernel 4.1.12 rsync is dead
> >>> Kernel 4.1.15 rsync is dead
> >>>
> >>> Since all sparc profiles use a 64bit kernel i would be heavily
> >>> interested in what kernel / options you are running.
> >> Linux bender 3.17.2 #2 SMP Tue Nov 11 18:56:20 UTC 2014 sparc64 sun4v UltraSparc T1 (Niagara) GNU/Linux
> >>
> >> [    0.000000] Linux version 3.17.2 (root@bender) (gcc version 4.7.3 (Gentoo 4.7.3-r1 p1.5, pie-0.5.5) ) #2 SMP Tue Nov 11 18:56:20 UTC 2014
> >>
> >> config is attached
> >>
> >>> Using the kernel config from the CD on a newer kernel still results in a
> >>> broken rsync. So the kernel is either broken somehow or there's an
> >>> option somewhere that genkernel, the cd config, and myself are missing.
> >> or the toolchain is unhappy
> >
> > It's fairly likely that you will break rsync as well if you upgrade to a
> > 4.X kernel as i have experienced this with an official install on
> > another box. I'm working on building a 3.14 kernel with a newer
> > toolchain to see what happens. 4.4.1 still has this issue, i may try
> > vanilla sources as well after 3.14.
> >
> > I suppose its also likely that this could be a bug in rsync as well that
> > may have been relying on a bug in older kernels which was later fixed.
> > But this is all speculation at this point.
>
> 3.14.58 works fine when built with the latest toolchain. I had to use
> the CD config, as genkernel doesn't have correct sparc settings and i
> didn't feel like manually configuring it just to see if rsync worked
> afterwards. The fun part will be finding which exact kernel introduced
> the breakage, or perhaps it could be an rsync bug as the rest of the
> system works fine on newer kernels. Even if it is an issue with rsync,
> finding the kernel the breaks this functionality might help narrow down
> the issue.

agreed -- if we can narrow down the kernel range, that should help with
triaging
-mike