The Future of XCP

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XCP is an open-source version of Citrix's XenServer virtualization platform. Upcoming releases include XCP 1.1 with bug fixes and XCP 1.5 with new features like Disaster Recovery and 1TB host memory support. Project Kronos aims to port XCP's XenAPI toolstack to Debian/Ubuntu to support OpenStack. Long term, Citrix envisions XCP becoming the configuration of choice for clouds and bridging the gap between open source Xen and XenServer communities.

The Future of XCP

Mike McClurg
Citrix Systems

XCP in a nutshell
 Open source distribution of XenServer

 Provides vertical stack for server virtualization

 Distributed as a closed appliance, not as an
installable software package

XCP in a nutshell

This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License.
http://xkcd.com/918/

Upcoming XCP releases
 XCP 1.1 beta released
 Final should be released end of August
 Mostly bug fixes since XCP 1.0
 Next major release scheduled for November
 Tentatively named XCP 1.5
 Will have Xen 4.1, Linux 2.6.32
 New features: Disaster Recovery, GPU
passthrough, 1TB host memory
 New guest support: Solaris, Ubuntu 10.10, RHEL
6.0

Project Kronos
 XCP's XenAPI toolstack, running on Debian
and Ubuntu systems

 Why are we doing this?
 To provide OSS Xen support for OpenStack
 Because it's the right thing to do (and because it's
just really cool)

Project Kronos
 New technology
 Cross-pool migration using DRDB
 Support for OpenStack through Project Olympus
 New libxl bindings for xapi

Project Kronos Timeline
 Milestone 1
 First release to coincide with Ubuntu 11.10
 Published as Ubuntu PPA and Debian apt repo
 Milestone 2
 Second release to coincide with Ubuntu 12.04 LTS
 Will be in Debian unstable and Ubuntu repos
 Follow along with development
 http://wiki.xen.org/xenwiki/XAPI_on_debian

Where we're headed
 XCP is XenServer “unstable”
 Tracking unstable hypervisor/kernel
 More open development model
 XenAPI toolstack is more easily consumable
 Supporting the cloud through OpenStack

XCP Vision
 XCP is the configuration of choice for clouds

 XCP bridges the gap between OSS Xen and
XenServer/XCP communities

 XCP becomes the Xen Community Platform

Xen.org has several initiatives that aim to have an impact onOpenStack adoption and feature richness. This talk will include adiscussion on the Xen Cloud Platform (XCP), the XCP toolstack (XAPI)port to popular Linux distributions, and the Xen on ARM initiative. XCP combines the Xen hypervisor with enhanced security, storage, andnetwork virtualization technologies to offer a rich set of virtualinfrastructure cloud services. These XCP cloud services can beleveraged by OpenStack cloud providers to enable isolation andmulti-tenancy capabilities in their environments. XCP also providesthe user requirements of security, availability, performance, andisolation for private and public OpenStack cloud deployments. Xen.org is working to make XCP and OpenStack work seamlessly so thattogether they can be the ultimate open source cloud solution. Inaddition to deploying XCP as a separate component with OpenStack,Xen.org is simultaneously porting the XCP toolstack (XAPI) to Linuxdistributions, which will give cloud administrators an easy-to-installOpenStack and Xen-based integrated alternative. Finally, industry thought leaders, such as Mark Shuttleworth, aresupporting the adoption of ARM in server-class systems. Consequently,the port of Xen to the ARM platform could make it possible forOpenStack and Xen to lead the way into the future of ARM-based clouddeployments.

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XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...

The Linux Foundation

For many years the QEMU codebase has contained PV backends for Xen guests, giving them paravirtual access to storage, network, keyboard, mouse, etc. however these backends have not been configurable as QEMU devices as their implementation did not fully adhere to the QEMU Object Model (QOM). Particularly the PV storage backend not using proper QOM devices, or qdevs, meant that the QEMU block layer needed to maintain legacy code that was cluttering up the source. This was causing push-back from the maintainers who did not want to accept any patches relating to that Xen backend until it was 'qdevified'. In this talk, I'll explain the modifications I made to QEMU to achieve 'qdevification' of the PV storage backend, how compatibility with the libxl toolstack was maintained, and what the next steps in both QEMU and libxl development should be.

XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D

The Linux Foundation

PCI is a local computer bus for attaching hardware devices in a computer, and is the main peripheral bus on modern x86 systems. As such, having a proper way to emulate it is crucial for Xen to be able to expose both fully emulated devices or passthrough devices to guests. This talk will focus on the current status of PCI emulation in Xen, how and where it is used, what are its main limitations and future plans to improve it in order to be more robust and modular.

XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems

The Linux Foundation

XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...

The Linux Foundation

Xen is a very powerful hypervisor with a talented and diverse developers community. Despite the fact it's almost everywhere (from the Cloud to the embedded world), it can be difficult to set up and manage as a system administrator. General purpose distros have Xen packages, but that's just a start in your Xen journey: you need some tooling and knowledge to have a working and scalable platform. XCP-ng was built to overcome those issues: by bringing Xen to the masses with a fully turnkey distro with Xen as its core. It's the logical sequel to the XCP project, with a community focus from the start. We'll see how it happened, what we did, and what's next. Finally, we'll see the impact of XCP-ng on the Xen Project.

XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...

The Linux Foundation

XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...

The Linux Foundation

High level toolstacks for server and cloud virtualization are very mature with large communities using and supporting them. Client virtualization is a much more niche community with unique requirements when compared to those found in the server space. In this talk, we’ll introduce a client virtualization toolstack for Xen (redctl) that we are using in Redfield, a new open-source client virtualization distribution that builds upon the work done by the greater virtualization and Linux communities. We will present a case for maturing libxl’s Go bindings and discuss what advantages Go has to offer for high level toolstacks, including in the server space.

XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE

The Linux Foundation

Today Xen is scheduling guest virtual cpus on all available physical cpus independently from each other. Recent security issues on modern processors (e.g. L1TF) require to turn off hyperthreading for best security in order to avoid leaking information from one hyperthread to the other. One way to avoid having to turn off hyperthreading is to only ever schedule virtual cpus of the same guest on one physical core at the same time. This is called core scheduling. This presentation shows results from the effort to implement core scheduling in the Xen hypervisor. The basic modifications in Xen are presented and performance numbers with core scheduling active are shown.

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