XCP Project Update

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Lars will give an update on the latest development from the XCP project, standing in for Mike McClurg. He will also talk about the latest developments in project Kronos, which is changing the delivery model for XCP from an appliance to distribution of all XCP components via Linux distributions, and explain what this means for you. He will share 2012 plans for the XCP projecft and explain how you can engage and influence the future direction of XCP.

Technologie

XCP Project Update Lars Kurth on behalf of Mike McClurg, XCP project lead

XCP History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

XCP in a nutshell (now) ,[object Object],[object Object],[object Object]

XCP and Cloud Projects ,[object Object],[object Object],[object Object],[object Object]

OpenNebula is an open-source tool for the management of virtualized data centers XAPI OpenNebula provides cloud orchestration to XCP with an adaptable, extensible, proven, and interoperable architecture XCP provides a complete cloud platform to OpenNebula, with enhanced security, storage and network virtualization Drivers to be released 2nd November!

XCP EcoSystem OpenXenManager XenOrchestra Zentific XenWebManager ATA over Ethernet Open vSwitch [Vast Sky] Host sFlow Stacklet Bundler XVA XenCenter

Upcoming XCP releases ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Project Kronos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Project Kronos ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Project Kronos : What works so far *) Manual configuration required ?) Testing required for confirmation XCP Feature Working in Kronos on Debian? Working in Kronos on Ubuntu? HVM guests YES Needs testing PV guests (netboot install) YES YES PV guests (ISO install) NO NO Open vSwitch NO NO Bridge networking YES* YES* OpenXenManager integration YES YES XenCenter integration YES Needs testing Resource Pooling YES Needs testing NFS/ext3 storage back-ends YES YES

Project Kronos : Next Steps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

XCP & XenServer ,[object Object],[object Object]

Where we're headed ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

XCP Vision ,[object Object],[object Object],[object Object]

Decisions, decisions, decisions, … ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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The Linux Foundation

2018 saw fundamental shifts in security boundaries which were previously taken for granted. A lot of work has been done in the past 2 years, and largely in secret under embargo, but there is plenty more work to be done to strengthen the existing mitigations and to try to recover some performance without reopening security holes. This talk will look at speculative execution sidechannels, the work which has already been done to mitigate the security holes, and future work which hopes to bring some improvements.

XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix

The Linux Foundation

The Arm architecture provides a set of guidelines that any software should abide by when accessing the memory with MMU off and update page-tables. Failing to do so may result in getting TLB conflicts or breaking coherency. In a previous talk ("Keeping coherency on Arm"), we focused on updating safely the stage-2 (aka P2M) page-tables. This talk will focus on the boot code and Xen memory management. During this session, we will introduce some of the guidelines and when they should be used. We will also discuss how Xen boot sequence needs to be reworked to avoid breaking the guidelines.

XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd

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

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

The Linux Foundation

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

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

The Linux Foundation

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

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

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.

XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE

The Linux Foundation

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