Welcome to the Xen.org weekly newsletter with a variety of information to keep you updated on all things Xen. Please feel free to contact me with suggestions for the newsletter. Xen News * Community Member Spotlight Dulloor Rao – https://xenproject.org/index.php/2010/08/09/community-member-spotlight-dulloor-rao/ * Virtualization and over-subscription:
From Ian Campbell – http://lists.xensource.com/archives/html/xen-devel/2010-08/msg00728.html The last in-tree user of the xc_ptrace functionality was removed in changeset:Â Â 21732:eb34666befcc user:Â Â Â Â Â Â Â Ian Jackson <Ian.Jackson@eu.citrix.com> date:Â Â
From Stefano Stabellini – http://lists.xensource.com/archives/html/xen-devel/2010-08/msg00649.html this is the long awaited patch series to add xen device model support in qemu; the main author is Anthony Perard. Developing this series we tried to come up with the cleanest possible solution from the qemu
From George Dunlap – http://lists.xensource.com/archives/html/xen-devel/2010-08/msg00673.html At the moment, the “weight” parameter for a VM is set on a per-VM basis. This means that when cpu time is scarce, two VMs with the same weight will be given the same amount of
The sixth release candidate for 4.0.1 is tagged as 4.0.1-rc6 at http://xenbits.xen.org/staging/xen-4.0-testing.hg We expect this to be the final RC, with no changes except for regression fixes ahead of final release late next week. So please test this RC!
From Dave Scott – http://lists.xensource.com/archives/html/xen-api/2010-08/msg00031.html I’ve written a proposal on the wiki for “Cross-host VDI.copy” i.e. the ability to copy VDIs (disks) and therefore VMs between storage repositories on separate XCP hosts: http://wiki.xensource.com/xenwiki/Cross-host_VDI.
Some pictures of the event with Jeremy Fitzhardinge – http://www.flickr.com/photos/35753147@N03/sets/72157624691411760/with/4877667436/.
I received an email from Andres Lagar-Cavilla about an interesting post from GridCentric, a virtualization startup. Something that we think about a lot at GridCentric is how to ensure that resources are used efficiently. In fact, that’s what led us to create Copper in the first place — seeing how
For those of you who did not see Jeremy Fitzhardinge’s presentation at Xen User Group in LA you now have a chance to see his slides which I have updated to be the new Why Xen? Slides for everyone to use. The slides are available at SlideShare Why xen
On Sunday 8/8 the Xen Community lost one of its pioneers and staunch supporters, Alex Vasilevsky, to Cancer.  Alex was founder of Virtual Iron, which started out with a proprietary hypervisor and switched to using Xen in its later product releases.   When Virtual Iron
I am proud to announce our latest Community Member Spotlight on Dulloor Rao at http://www.xen.org/community/members.html. Dulloor recently presented at the Xen Summit North America at AMD 2010 : Guest NUMA Support (PV) and (HVM) with Jun Nakajima (Slides & Video).
Full RFC Patch - http://lists.xensource.com/archives/html/xen-devel/2010-08/msg00359.html It is libxl policy to return objects to callers which the caller must free. It therefore a matter of correctness for libxl to only free it's internal scratch allocations and never to free things