On Fri, Nov 18, 2016 at 02:25:18PM -0700, Jim Fehlig wrote:
Hi All,
I briefly mentioned this at an evening event during the KVM Forum / Xen Dev Summit, but the list is certainly a better place to discuss such a topic. What do folks think about finally removing the old, legacy, xend-based driver from the libvirt sources?
RIP. It will make your life easier! All the code that Joao and Bob are doing is against libxl and I presume other folks are more interested in that.
The Xen community made xl/libxl the primary toolstack in Xen 4.1. In Xen 4.2, it was made the default toolstack. In Xen 4.5, xm/xend was completely removed from the Xen source tree. According to the Xen release support matrix [0], upstream maintenance of Xen 4.1-4.3 has been dropped for some time, including "long term" security support. Xen 4.4-4.5 no longer receive regular maintenance support, with security support ending in March for 4.4 and January 2018 for 4.5. In short, the fully maintained upstream Xen releases don't even contain xm/xend :-).
As for downstreams, I doubt anyone is interested in running the last several libvirt releases on an old Xen installition with xm/xend, let alone libvirt.git master. SUSE, which still supports Xen, has no interest in using a new libvirt on older (but still supported) SLES that uses the xm/xend toolstack. I struggle to find a good reason to keep any of the old cruft under src/xen/. I do think we should keep the xm/sexpr config parsing/formatting code src/xenconfig/ since it is useful for converting old xm and sexpr config to libvirt domXML.
/me nods.
Thanks for opinions and comments!
Regards, Jim
[0] https://wiki.xenproject.org/wiki/Xen_Project_Release_Features
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