After concluding our poll about changes to the security discussion, we determined that “Pre-disclosure to software vendors and a wide set of users” was probably the best fit for the community. A set of concrete changes to the policy have now been discussed on xen-devel (here and here), and we
The “Normal†Case To explain what is a Stub-Domain (often called stubdom), let’s start with the basics. When you start a new guest with Xen, you would need a Device Model which does some emulation if the guest does not have PV drivers. This is the case for
Xen.org is happy to announce that XCP 1.6 has been released! The release is available from the download page: * XCP 1.6: Download (Xapi source) New features and Improvements XCP 1.6 has many new features and improvements, most notably Storage XenMotion, Live VDI Migration, improved integration with
Cambridge, UK 11/27/2012 – Xen.org, home of the open source Xen hypervisor, today announced the availability of Xen Cloud Platform 1.6 (or short XCP), an industry-leading virtualization platform for companies to create and manage virtual infrastructures for servers, desktops and clouds. XCP 1.6 strengthens its server
The blkback/blkfront drivers developed by the original Xen team was lightweight and fast zero-copy protocol that has served well for many years. However, as the number of physical cores and the number of guests have increased on systems, we have begun to identify some bottlenecks to scalability. This prompted
A couple of weeks ago I went to Copenhagen to attend Linaro Connect and Ubuntu Developer Summit for the first time. I was really impressed by the size of the conference, I wasn’t expecting so many people, it certainly rivals LinuxCon in terms of attendance. All the best minds
In part 1 of this series, I introduced the concepts of full virtualization and paravirtualization (PV), as well as the hardware virtualization (HVM) feature used by Xen (among other things) to implement full virtualization. I also introduced the concept of installing paravirtualized drivers on a fully virtualized system. This small
As usual, Fedora has planned a number of test days for their upcoming Fedora 18 release, including include a Virtualization Test Day on November 1st (tomorrow!). We are therefore calling all our community members to participate in the test day as much as possible. Specific information regarding testing Xen on
A few weeks ago, we launched our first XCP User Survey. We nearly had 500 responses when I compiled a preliminary analysis of the survey results. First, I wanted to thank everybody who participated. Of all respondents 38% of respondents are using XCP today, 40% are evaluating XCP or planning
At XenSummit 2012 in San Diego, Mukesh Rathor from Oracle presented his work on a new virtualization mode, called “PVH”. Adding this mode, there are now a rather dizzying array of different terms thrown about — “HVM”, “PV”, “PVHVM”, “PVH” — what do they all mean? And why do we have so
One of the issues in any software project can be the disconnect between what users want or would find useful, and the developers’ idea of what users want or would find useful, and Xen is no exception. To help address this issue, we are starting to experiment with a website
Last weekend Linus Torvalds pulled the Xen on ARM patches in his Linux tree, so as of Saturday the 7th of October, we have Xen ARM in upstream Linux! This makes Xen the first hypervisor supported by Linux on the ARM platform! Working on ARM has been a very pleasant