Bonjour Citrixiens et Citrixienes en herbe,
Depuis le 10 Mars 2010 la version 5.6 beta de XenServer est disponible, je sais que beaucoup de sites internet en ont relayé l’information. Certains on peut être déjà testé cette nouvelle version, pour ma part j’en suis bien satisfait. XenServer 5.6 est basé sur les nouveaux apports de Xen 4.0.
Amélioration des performances réseaux, partage de la mémoire, etc… tant d’options qui faisaient défaut à Citrix face à ses concurrents. Il semble que le fait que le monde du Cloud dans le monde pousse toujours en avant le projet Xen. Et c’est tant mieux pour nous… Qui a dit que XenServer est mort 😉
Cette nouvelle version inclus :
[tab:Nouvelles fonctionnalités de XenServer 5.6]http://wiki.xensource.com/xenwiki/Xen4.0
Annonce Officielle Citrix – Xen.org Brings New Level of Performance to the Enterprise and Cloud with Xen 4.0 Hypervisor
extrait : Xen 4.0 release notes
Xen hypervisor 4.0.0 was released on 07 Apr 2010. Official release announcement email from xen-devel mailinglist: http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00268.html
Xen 4.0 is the core hypervisor with basic command line management tools. You can use it with your favourite Linux distribution to build your own secure, high performance virtualization solution. Some users add additional third party management tools and interfaces to create their own virtualization platform.
If you’re looking for more complete and integrated offering please check out the Xen Cloud Platform (XCP): http://www.xen.org/products/cloudxen.html
Xen 4.0 new features
– Better performance and scalability: 128 vcpus per guest, 1 TB of RAM per host, 128 physical CPUs per host (as a default, can be compile-time increased to lots more).
– blktap2 for VHD image support, including high-performance snapshots and cloning. Wiki link: blktap2
– Improved IOMMU PCI passthru using hardware accelerated IO virtualization techniques (Intel VT-d and AMD IOMMU). Wiki links: XenPCIpassthrough and VTdHowTo
– VGA primary graphics card passthru support to an HVM guest for high performance graphics using direct access to the graphics card GPU from the guest OS. Wiki links: XenVGAPassthrough
– TMEM allows improved utilization of unused (for example page cache) PV guest memory. more information: http://oss.oracle.com/projects/tmem/
– Memory page sharing and page-to-disc for HVM guests: Copy-on-Write sharing of identical memory pages between VMs.This is an initial implementation and will be improved in upcoming releases.
– New Linux pvops dom0 kernel 2.6.31.x as a default, 2.6.32.x also available. You can also use linux-2.6.18-xen dom0 kernel with Xen 4.0 hypervisor if you want. Wiki link: XenDom0Kernels
– Netchannel2 for improved networking acceleration features and performance, smart NICs, multi-queue support and SR-IOV functionality.
– Online resize of guest disks without reboot/shutdown.
– Remus Fault Tolerance: Live transactional synchronization of VM state between physical servers. run guests synchronized on multiple hosts simultaneously for preventing downtime from hardware failures.
– RAS features: physical cpu/memory hotplug.
– Libxenlight (libxl): a new C library providing higher-level control of Xen that can be shared between various Xen management toolstacks.
– PV-USB: Paravirtual high-performance USB passthru to both PV and HVM guests, supporting USB 2.0 devices. Wiki link: XenUSBPassthrough
– gdbsx: debugger to debug ELF guests
– Support for Citrix WHQL-certified Windows PV drivers, included in XCP (Xen Cloud Platform). Xen Cloud Platform: http://www.xen.org/products/cloudxen.html
– Pygrub improvements: Support for PV guests using GRUB2, Support for guest /boot on ext4 filesystem, Support for bzip2- and lzma-compressed bzImage kernels
– etc…
[tab:Téléchargement]
Source : Xen 4
Source : XenServer 5.6 beta version. Il vous faut un compte MyCitrix pour pouvoir télécharger cette version.
A bientôt,
Patrice Jacques-gustave
Enfin ça arrive (Dynamic Memory Control et Enhanced VM Snapshots), mieux vaut tard que jamais 🙂
n’est ce pas 😉
Dommage que le Dynamic Memory Control soit soumis à licence payante
oui, peut être dans une futur version, restons optimiste 😉 on ne sait jamais.