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Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15 |
Date: |
Wed, 10 May 2017 20:04:59 +0100 |
User-agent: |
Mutt/1.8.2 (2017-04-18) |
* Markus Armbruster (address@hidden) wrote:
> Thomas Huth <address@hidden> writes:
>
> > On 10.05.2017 11:08, Daniel P. Berrange wrote:
> >> On Wed, May 10, 2017 at 08:48:53AM +0200, Thomas Huth wrote:
> [...]
> >> Also unless we're going to get more serious about automated testing to
> >> validate machine type compatibility between *all* previously releases,
> >> I think that 6 years / 18 releases is too long a time to have any
> >> confidence in migration compatibility between versions.
>
> Seconded.
>
> > Distro vendors often offer 5 - 10 years support for certain versions of
> > their Linux distros, so I think we should at least support 5 years, too.
>
> Non sequitur.
>
> Distro vendors put in serious work to keep versions working for 5 - 10
> years. We can't, and we don't. All we do is try not to break things,
> which is nice, and helps the distro vendors some, but a far cry from
> anything I'd dare call "support".
>
> Perhaps an argument could be made that us keeping to try for at least 5
> years would help distro vendors enough to be worthwhile. Maybe, but
> color me skeptic.
Since I'm often the one having to fix the breakages when we find they've
diverged, I would prefer us to try to keep them working upstream.
Every time something slips through upstream it's more work for me.
Dave
> >> IOW, I think you should be more aggressive in culling old machine types
> >> that this patch is...
> >
> > Actually, I like the idea of using the major release versions for
> > defining the set of removal - hoping that we will do a v3.0 next year
> > which then would support the previous two major release versions 1.x and
> > 2.x, but drops support for the 0.xx versions completely ...
>
> I wouldn't put *that* much weight into our past version numbers. If I
> remember correctly, there was no more to 1.0 than a feeling of "this 0.x
> thing is getting ridiculous".
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
- [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Thomas Huth, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Daniel P. Berrange, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Thomas Huth, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Daniel P. Berrange, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Thomas Huth, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Paolo Bonzini, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Markus Armbruster, 2017/05/11
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Thomas Huth, 2017/05/11
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Markus Armbruster, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Paolo Bonzini, 2017/05/10
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15,
Dr. David Alan Gilbert <=
- Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Markus Armbruster, 2017/05/11
Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Dr. David Alan Gilbert, 2017/05/10
Re: [Qemu-devel] [PATCH] hw/i386: Deprecate the machines pc-0.10 to pc-0.15, Paolo Bonzini, 2017/05/10