[openstack-dev] RFC: Next minimum libvirt / QEMU versions for 'T' release

Colleen Murphy colleen at gazlene.net
Wed Sep 26 11:04:40 UTC 2018


On Mon, Sep 24, 2018, at 3:22 PM, Kashyap Chamarthy wrote:
> Hey folks,
> 
> Before we bump the agreed upon[1] minimum versions for libvirt and QEMU
> for 'Stein', we need to do the tedious work of picking the NEXT_MIN_*
> versions for the 'T' (which is still in the naming phase) release, which
> will come out in the autumn (Sep-Nov) of 2019.
> 
> Proposal
> --------
> 
> Looking at the DistroSupportMatrix[2], it seems like we can pick the
> libvirt and QEMU versions supported by the next LTS release of Ubuntu --
> 18.04; "Bionic", which are:
> 
>     libvirt: 4.0.0
>     QEMU:    2.11
> 
> Debian, Fedora, Ubuntu (Bionic), openSUSE currently already ship the
> above versions.  And it seems reasonable to assume that the enterprise
> distribtions will also ship the said versions pretty soon; but let's
> double-confirm below.
> 
> Considerations and open questions
> ---------------------------------
> 
> (a) KVM for IBM z Systems: John Garbutt pointed out[3] on IRC that:
>     "IBM announced that KVM for IBM z will be withdrawn, effective March
>     31, 2018 [...] development will not only continue unaffected, but
>     the options for users grow, especially with the recent addition of
>     SuSE to the existing support in Ubuntu."
> 
>     The message seems to be: "use a regular distribution".  So this is
>     covered, if we a version based on other distributions.
> 
> (b) Oracle Linux: Can you please confirm if you'll be able to
>     release libvirt and QEMU to 4.0.0 and 2.11, respectively?
> 
> (c) SLES: Same question as above.

Already responded on IRC and on the patch, but to close the loop here: these should be fine for the next versions of SLES, thanks for checking.

Colleen

> 
> Assuming Oracle Linux and SLES confirm, please let us know if there are
> any objections if we pick NEXT_MIN_* versions for the OpenStack 'T'
> release to be libvirt: 4.0.0 and QEMU: 2.11.
> 
>     * * *
> 
> A refresher on libvirt and QEMU release schedules
> -------------------------------------------------
> 
>   - There will be at least 12 libvirt releases (_excluding_ maintenance
>     releases) by Autumn 2019.  A new libvirt release comes out every
>     month[4].
> 
>   - And there will be about 4 releases of QEMU.  A new QEMU release
>     comes out once every four months.
> 
> [1] http://git.openstack.org/cgit/openstack/nova/commit/?h=master&id=28d337b
>     -- Pick next minimum libvirt / QEMU versions for "Stein"
> [2] https://wiki.openstack.org/wiki/LibvirtDistroSupportMatrix
> [3] http://kvmonz.blogspot.com/2017/03/kvm-for-ibm-z-withdrawal.html
> [4] https://libvirt.org/downloads.html#schedule
> 
> -- 
> /kashyap
> 
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