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Xen: Open Source Hypervisor Designed for Clouds. lars_kurth. Lars Kurth Community Manger, Xen Project Chairman, Xen Project Advisory Board Director, Open Source, Citrix. About Me. Was a contributor to various projects Worked in parallel computing, tools, mobile and now virtualization - PowerPoint PPT Presentation
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Xen: Open Source Hypervisor Designed for CloudsLars KurthCommunity Manger, Xen ProjectChairman, Xen Project Advisory BoardDirector, Open Source, Citrix lars_kurth
About MeWas a contributor to various projectsWorked in parallel computing, tools, mobile and now virtualizationLong history in change projectsCommunity guy at Symbian FoundationLearned how NOT to do stuff
Community guy for the Xen ProjectWorking for CitrixAccountable to Xen Project Advisory BoardChairman of Xen Project Advisory Board
The Cloud “Problem”
IT: Pre-CloudStability is ParamountValue of IT: consistent service availabilityService capacity specified a year or more in advanceWhat’s up, stays up
Change is BadChange to status quo is disruptive and dangerous
IT in the CloudAvailability of Services is ParamountValue of IT: consistent service availability matching dynamic business demandService capacity must move with business needsWhat’s up when depends on what’s needed when
Change is GoodServices must change to cover the needs of the momentLack of change = lack of value
Virtualization in the CloudIt must be stable
It must be secure
It must be configurable on a large scale
It must take orchestration
It must be multi-tenant
What is the Xen Project?
An Open Source Hypervisor > 10M Users
Powering some of the biggest Clouds in ProductionAmazon Web Services, Rackspace Public Cloud, Terremark, …
Several sub-projectsXen Hypervisor, XAPI management tools, Mirage OS
Linux Foundation Collaborative ProjectSponsored by Amazon Web Services, AMD, Bromium, Calxeda, CA Technologies, Cisco, Citrix, Google, Intel, NetApp, Oracle, Samsung and Verizon
10 years old
A type-1 hypervisor with a twist
VM2 VMn
Applications Applications
Guest OS Guest OS
Applications Applications
VM1 (or DomU)
Applications
Guest OS
VM0 (or Dom0)
Toolstack
Dom0 Kernel
HWCPUsMemoryI/O
Console
Scheduler MMU Timers InterruptsConfig
VM2 VMn
Applications Applications
Guest OS Guest OS
Applications Applications
VM1 (or DomU)
Applications
Guest OS
VM0 (or Dom0)
Toolstack
Dom0 Kernel
HWCPUsMemoryI/O
Drivers
Console
Scheduler MMU Timers InterruptsConfig
back PV front
VM2 VMn
Applications Applications
Guest OS Guest OS
Applications Applications
VM1 (or DomU)
Applications
Guest OS
VM0 (or Dom0)
Toolstack
Dom0 Kernel
HWCPUsMemoryI/O
QEMU
Console
Scheduler MMU Timers InterruptsConfig
DomU
DomU
DomU
Dom0
Security
Security in the Cloud
Service VM
Guest OS
Dom0
Toolstack
Dom0 Kernel
HWCPUsMemoryI/O
Scheduler MMU Timers InterruptsConfig
Example Security Features
Driver(s)
QEMU Disaggregation
Service VM
Guest OS
Dom0
Toolstack
Dom0 Kernel
HWCPUsMemoryI/O
Scheduler MMU Timers InterruptsConfig
Example Security Features
QEMU
Linux Security Modules /SELinux
Xen Security Modules /FLASK
Managing Xen
Single HostBasic Functions
Multiple HostsAdditional Functionality
Multiple HostsMore Functionality
Rich Toolstacks
Increased level of functionality and integration with other components
Toolstack / Console
Hypervisor Xen Hypervisor
XAPI / XEDefault / XL Libvirt / VIRSH
Xen
XAPI
XAPI / XEDefault / XL
Xen Hypervisor
Cloud Support
Toolstack / Console
Hypervisor
Libvirt / VIRSH
Virtualization in the CloudIt must be stable
It must be secure
It must be configurable on a large scale
It must take orchestration
It must be multi-tenant
AWS, Rackspace Public Cloud, Terremark, many others …
Tons of features: see tinyurl.com/xen-secure
Puppet, Chef, Salt, … − GUIs − APIs − Orchestration
Apache CloudStack, OpenNebula, OpenStack, …
Pools and other functionality in XAPI
Xen, XAPI, xenserver-core& XenServer
DOM0 VM1 VMn
Guest OS Guest OS
Applications Applications
QEMU
Drivers XS Tools XS Tools
XAPI
3rd partyComponents
HAStorage
Mgr
XE / XenCenter
DOM0 VM1 VMn
Guest OS Guest OS
Applications Applications
QEMU
Drivers XS Tools XS Tools
XAPI
3rd partyComponents
HAStorage
Mgr
XE / XenCenter
xenserver-core packagesDOM0
QEMU
Drivers
XAPI
3rd partyComponents
HAStorage
Mgr
Virtualization Base Packages(Xen, QEMU, Libvirt)
xenserver-core package(XAPI, Storage Manager, …)(Currently excluding 3rd party stuff)
Base Distro(CentOS, Debian, Ubuntu)
> yum / apt-get install …
Xen and OpenStack
April 2013: User Survey Data
71%
13%
8% 5%3%Hypervisor
KVMXen (inc. XAPI)ESXLXCHyperV
Source: http://fr.slideshare.net/openstack/havana-survey-resultsfinal-19312081 (before Xen Project and OSS XenServer)
Why?Not on Feature and Quality parity yetSignificant progress in Havanah / 13.2
Xen and XAPI not perceived to be Open SourceThis is now different
Citrix backing of Apache CloudStack Created “confusion” in the marketplaceCreated resentment by OpenStack developers
Grizzly 13.1: Hypervisor Status
Source: https://wiki.openstack.org/wiki/HypervisorSupportMatrix
Group A(Fully Supported)
Most Features
KVM/QEMU + LIBVIRT
Group B(Gate Tested)
Missing:Volume SwapVolume Rate Limiting
XEN + XAPI
Group C(Minimal Testing)
Missing:See table
All the others
Xen + LIBVIRT
TBDSignificant Investment
Source: http://docs.openstack.org/trunk/openstack-compute/install/yum/content/introduction-to-xen.html
Source: https://wiki.openstack.org/wiki/XenServer/DevStack
DevStack:Script to set up OS VM
Also adds:• Swift• Glance• Horizon
What Next?Havanah 2013.2:OpenStack support for xenserver-coreMore Tests; Improved Quality (moving towards Group A)
Icehouse 2014.1Feature catch-up (not in one go)ARM support for xenserver-coreExpanding VGPU FunctionalityDesktop and Enterprise Features
Impact:
OpenStack can also run in Dom0
Closer to OpenStack Usage Model
Closer to OpenStack Development Model
More Deployment Options (Security)
OpenStack and xenserver-core
localhost
Xen CommunityAlive and kicking
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Developer list traffic : Q3 2003 - now
More Development Activity
Increasing Diversity
2010 2011 2012 2013 (H1)0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
UPC Spectra Logic Redhat iweb GridCentric Calxeda Fujitsu (Misc) AWS(Academia) John Hopkins University AMD Linaro Oracle NSA Intel (Individual) SuseCitrix
Conclusion
Xen is a great solution for the Cloud
Significant Investment in XAPI + OpenStack
As well as CloudStack
The Xen Community is accelerating
More info at: xenproject.orgevents.linuxfoundation.org/events/xen-project-developer-summit
Shameless Project Promotion
Thank You!Please rate the talk
on slideshare or twitter
www.slideshare.net/xen_com_mgr/
Flickr:“Giant Sequoia Trees” by Raj
Wikipedia:“Bodium Castle” by Antony McCallum
Other Images:By Lars Kurth or acquired
Credits and ResourcesXen Project:www.xenproject.orgwiki.xenproject.orglists.xenproject.orgxenbits.xenproject.org
@xen_org
##xen
