[CentOS-virt] Xen Version update policy

Thu Nov 28 18:24:46 UTC 2019
Karl Johnson <karljohnson.it at gmail.com>

On Thu, Nov 28, 2019 at 1:12 PM George Dunlap <dunlapg at umich.edu> wrote:

> Hey all,
>
> This mail has been a long time in coming, but with the upcoming
> expiration of security support for Xen 4.8, it's time to start thinking
> about what our update policy will be for the Xen packages in general.
>
> Citrix is committed to officially supporting one Xen version at a time
> through the CentOS Virt SIG.  (Others in the community are welcome to
> support others.)  But we'd like input as to which version the community
> would like to be supported at any one time.
>
> Please express your opinion on each option by replying as follows:
> -2: This is a bad idea, and I would argue against this
> -1: I'm not happy with this, but I wouldn't argue against this.
> 0: No opinion.
> 1: I'm happy with this, but I wouldn't argue for it.
> 2: This is a great idea, and I'd argue for it.
>
> There are several possible options:
>
> 1. Always support the newest option.  This means we get all the newest
> features from Xen in the Virt SIG by default; but also means we get all
> the newest bugs.
>
> 1a. Always support the newest option once it has at least one point
> release.  This balances the newness with a bit of extra testing.
>
> 1b. Always support the second-to-newest version (e.g., when 4.13 comes
> out, switch to 4.12.x)
>
> 2. Always support the oldest security-supported version.  This means we
> get the most stable version of Xen; but it does mean it is several years
> behind as far as features go.  It also means that further bugfixes do
> not happen automatically, and further bugs found will need to be
>
> 3. Always support the oldest fully-supported version.  Reasonably
> stable, reasonably old, still gets bugfixes.
>
> 4. Support a version until it's out of security support, then jump to
> the newest version.  This minimizes the number of upgrades required
> (although may make each upgrade more painful).
>
> 4a.  Support a version until it's out of full support, then jump to the
> newest version.
>
> Any other options?
>
> For my part, I think 1a, 1b, and 3 are all reasonable options.
>
> -George
>
>
1a and 1b are good options for me. I currently run 4.12.

Karl
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