Re: Preview Xen 3.2 rc* packages

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On Wed, Jan 02, 2008 at 03:01:05PM +0000, Ian Jackson wrote:
> > I've not decided yet on wether to name the hypervisor '/boot/xen.gz' or 
> > include a full version '/boot/xen-3.2.0.gz', or version + release
> > '/boot/xen-3.2.0-1.fc9'. I think i'll probably go for 'xen-3.2.0.gz'
> 
> I would definitely include the hypervisor version in future; I'm less
> sure about the package version.

Since Kier has said that each bug-fix series 3.1.x and 3.2.x maintain
hypervisor <->  ABI compatability, I reckon we should name the hypervisor
according to this version, so  '/boot/xen-3.1.gz' and '/boot/xen-3.2.gz'.
That way people can update the minor releases 3.2.0, 3.2.1, 3.2.2, etc
and not have to worry about changing grub configs.

> Debian have a very nice arrangement which lets you co-install
> different hypervisor and tools versions, and then effectively
> dual-boot.  Unfortunately their patches are very intrusive so that
> won't be in 3.2.0, but I think we certainly want to move in that
> direction upstream in the future (probably with different changes to
> achieve the same effect, rather than trying to import and redact
> Debian's patchset).

Personally I'd like to see upstream get serious about Hypervisor <-> Tools
ABI compatability. If you look at the changes in ABI from 3.1 to 3.2 trees
it would have been pretty trivial to maintain compatability for new 3.2 
hypervisor against old 3.1 tools. This is an idea that's been rejected
many times before, but I'd still like to see it. cf new Linux releases 
don't break glibc each time. Then we could finally get out of the lock-step 
upgrades..

Regards,
Dan.
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