[CentOS-virt] CentOS 6 Virt SIG Xen 4.6 packages available in centos-virt-xen-testing

Thu Jan 21 16:03:40 UTC 2016
Johnny Hughes <johnny at centos.org>

On 01/21/2016 09:52 AM, George Dunlap wrote:
> On Thu, Jan 21, 2016 at 3:39 PM, Johnny Hughes <johnny at centos.org> wrote:
>> On 01/21/2016 09:29 AM, Johnny Hughes wrote:
>>> This is a community SIG .. and xenproject.org does NOT release XSAs for
>>> 4.2.  The goal of Xen4centOS was to use an upstream LTS kernel and
>>> update those as required to stay on an LTS.  Also to do every second
>>> point release of xen (ie, 4.2, 4.4, 4.6).  All so we are longer term
>>> than upstream, BUT we have supported code from upstream.
>>>
>>> So, the goal is to use supported code for the longest amount of time the
>>> upsreams support them.  For xenproject.org .. they support the two
>>> newest releases.  For kernel.org, they do a new kernel LTS about every 2
>>> years.
>>>
>>> We don't have 5000 engineers to maintain community SIGs like they
>>> maintain the distro.  We have to have supported code from upstream projects.
>>>
>>>
>>
>> So what does this mean ..
>>
>> xenproject.org supports 4.6 and 4.5 right now. (last 2 releases).
> 
> This isn't exactly right.
> 
> Recent releases have 18 months of "support" (meaning, bug fixes are
> backported), and then another 18 months of "security backports", which
> means only XSAs are backported [1], regardless of when or how many
> releases have been made.  It just happens that most releases recently
> have ended up taking about 9 months, which means at any given time you
> have 2 in 'active support'; but that's mostly a coincidence. :-)
> 

Cool.  I do know that our target goal was every second release.

> So 4.4 won't be getting any more point releases, but it should
> continue to get XSAs through March 2017.  (This table [2] has it
> ending in March 2016, but I'm pretty sure that's a mistake.)

I would be for maintaining releases as long as there are XSAs for them
.. obviously as long as we have people to maintain them.

The 3.18.x LTS kernel has support until Jan 2017.  Then we will pick one
with the longest lifetime and shift.

> 
>  -George
> 
> [1] http://wiki.xenproject.org/wiki/Xen_Project_Maintenance_Releases
> 
> [2] http://wiki.xenproject.org/wiki/Xen_Project_Release_Features

Thanks,
Johnny Hughes

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