Articles about Xen Hypervisor

Xen project logo

How to make Xen, Qubes cry

Security researchers Jérémie Boutoille and Gabriel Campana have detailed how to exploit a serious guest escape bug in the Xen hypervisor that was patched at the end of last month. The Quarkslab pair demonstrated how the programming flaw (XSA-182, CVE-2016-6258) can be used to bust out of a Qubes OS virtual machine and take …
Chris Williams, 05 Aug 2016

Explo-Xen! Bunker buster bug breaks out guests from hypervisor

Code dive A super-bug in the Xen hypervisor may allow privileged code running in guests to escape to the underlying host. This means, on vulnerable systems, malicious administrators within virtual machines can potentially break out of their confines and start interfering with the host server and other guests. This could be really bad …
Chris Williams, 27 Jul 2016

Docker taps unikernel brains to emit OS X, Windows public betas

DockerCon Docker will kick off its DockerCon 2016 conference in Seattle this morning with a bunch of announcements: its OS X and Windows Docker clients will be made publicly available as beta software for anyone to try out; out-of-the-box orchestration is coming to Docker 1.12; and integration with Amazon's AWS and Microsoft's Azure is in …
Chris Williams, 20 Jun 2016
Precog Minority Report

Tintri debuts storage precog that knows what you'll need in 6 months

Tintri has made a triple-play for its future with enlarged flash capacity, the addition of scale-out and predictive analytics so customers never need get surprised by space running out. The three existing T5000 all-flash arrays now use Samsung 3D V-NAND SSDs, the ones with TLC (3bits/cell) flash, and their raw capacity has …
Chris Mellor, 17 May 2016
Xen project logo

Xen hypervisor to gain non-disruptive patching in June

The Xen Project will bring non-disruptive patching to its hypervisor, version 4.7 of which is set to debut onJune 3rd, 2016. That date may wobble a little, because the feature freeze scheduled for April 1st was put back a week in order to let contributors sort themselves out over Easter. But it's known that a sub-project …
Simon Sharwood, 28 Apr 2016

'Unikernels will send us back to the DOS era' – DTrace guru Bryan Cantrill speaks out

Some heralded Docker's acquisition of UK-based Unikernel Systems last week as the golden dawn of a post-container era. Others showed healthy skepticism. One person firmly in the latter camp is Bryan Cantrill, who typed up a long blog post on why he believes unikernels are "unfit" for production. Cantrill is chief technology …
Chris Williams, 27 Jan 2016

Docker bags unikernel gurus – now you can be just like Linus Torvalds

Analysis Linux container biz Docker has bought Unikernel Systems, a startup in Cambridge, UK, that's doing interesting things with roll-your-own operating systems. Rather than build an application on top of an OS, with the unikernel approach, you build your own tiny operating system customized for your application. It's quite a coup …
Chris Williams, 21 Jan 2016
Joanna Rutkowska of Invisible Things Labs gives talk "Towards (reasonably) trustworthy x86 laptops" at ccc - still from youtube

Trustworthy x86 laptops? There is a way, says system-level security ace

32c3 Security concerns around Intel's x86 processors – such as the company's decision to force the secretive Management Engine microcontroller onto its silicon – have raised fundamental questions about trust in personal computers, whatever architectures they may be based upon. Youtube Video The founder of Invisible Things Labs, …

Patch this braXen bug: Hypervisor hole lets guest VMs hijack hosts

The Xen hypervisor project today released nine security patches that should be applied ASAP – particularly the one that stops guest virtual machines seizing control of host servers. That vulnerability – XSA-148 – can be exploited by a paravirtualized guest to manipulate the memory layout of the underlying system, and …
Chris Williams, 29 Oct 2015

Microsoft's 'anti-malware Device Guard' in Windows 10: How it works, what you need

Microsoft has published a technical guide to its new Device Guard features in Windows 10 – including how to configure the anti-malware technology, and what hardware you'll need to use it. We first learned of Device Guard in April at the RSA 2015 conference in San Francisco, and then a month later a little more info was teased …
Chris Williams, 16 Sep 2015
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Chinese, Russian, tech giants join global open source efforts

Notable tech companies from China and Russia are taking strides into the heart of the global technology community. Aliyun, the cloud computing offshoot of Business-to-business tat bazaar Alibaba, has become an Advisory Board member of the Xen Project, maker of the popular (if frequently-perforated) open source Xen hypervisor …
Simon Sharwood, 17 Aug 2015

Cloudy VMs leak ID details that could allow attacks, says researcher

Research published by a US masters student reaches the somewhat unsettling conclusion that current cloud technologies don't separate virtual machines (VMs) as well as they could. By spying on shared resources at a low level, the research suggests, an attacker's VM can retrieve data written by another (like crypto keys), and …
Monster virtual machine

Magic quadrant of four squares, who's the virtualisation Mayor?

The analyo-mages at Gartner have emitted their Magic Quadrant for x86 Server Virtualization Infrastructure for 2015 and found a race in two between Microsoft and VMware, the only companies rated “leaders” in the field. The latter company's retained the prize position at top right in the Quadrant despite Gartner's mages not …
Simon Sharwood, 20 Jul 2015
Gigabyte H270-T70

ARM servers look to have legs as OVH boots up Cavium cloud

Backers of ARM CPUs as a data centre disruptor capable of knocking Intel off its lucrative Xeon-powered perch have a new poster child in the form of hosting company OVH, which has announced it will stand up a cloud powered by Cavium's ThunderX chippery. The ThunderX is a serious bit of kit, as each can pack up to 48 cores each …
Simon Sharwood, 16 Jul 2015
Xen project hypervisor logo

Guest-host escape bug sees Xen project urge rapid upgrade

The Xen Project has released version 4.5.1 of its eponymous hypervisor and recommended that users upgrade, stat. The new release contains over 100 improvements, most bug fixes or improvements on version 4.5. There is, however, one bigg-ish new flaw in the form of XSA-135, a guest-host escape mess that means “A guest which has …
Simon Sharwood, 29 Jun 2015
Gigabyte H270-T70

Gigabyte and Cavium team on super-dense ARM servers

Computex 2015 Motherboard maestro Gigabyte has revealed new servers based on Cavium's ThunderX ARM chippery. The decision to do so is not entirely new: Gigabyte makes server motherboards, bare bones servers and even some ARM-powered servers based on the AppliedMicro X-Gene1 CPU. The move into Cavium-powered boxen takes things up a notch, …
Simon Sharwood, 01 Jun 2015
udp_7000_648

Arcserve boxes clever, takes back-up appliance down a price division

CA spin-out Arcserve has an updated back-up appliance for the mid-market that should be faster, easier, better-priced and more capable. It says the UDP 7000 Appliance is for small, medium and mid-market customers, and is a simple yet powerful all-in-one product. UDP stands for Unified Data Protection and the appliance features …
Chris Mellor, 20 May 2015
Ceremony to mark ARM's decision to open a CPU dev centre in Taiwan

ARM plans to win 20 per cent of the server market by the year 2020

ARM Holdings is telling investors it will take 20 per cent of the server silicon market by the year 2020. The company made the claim last week at an event in Taiwan, sending ripples through the Asian media. A little searching shows that presentations like this one (PDF) shows that the 20 per cent claim has been used in chats …
Simon Sharwood, 23 Mar 2015
Cloud security

Xen bug latest: Cloudpocalypse averted, says Amazon

Amazon Web Services now says that despite the recent security vulnerabilities discovered in the Xen hypervisor, the vast majority of its Elastic Compute Cloud (EC2) customers won't need to reboot their virtual machine instances after all. Last week, AWS and Rackspace both said that customers should prepare for a mass reboot of …
Neil McAllister, 02 Mar 2015

Fro-Xen no longer: Xen project plans shorter dev process

The new release manager for version 4.6 of the open source Xen Hypervisor has proposed changes to the project's development process that he hopes will speed things up. Citrix employee Wei Liu, who has scored the gig of ushering the next version into the world, has explained the new plan in a post, presentation and mail in …
Simon Sharwood, 17 Feb 2015

Xen accelerates ARM server race with version 4.5

Version 4.5 of the Xen hypervisor is upon us. Those responsible for the new release are chuffed to report they've packed a couple of dozen big new features in this time around, doubling the 4.4 release's count. And there's more to come: some useful stuff couldn't be squeezed into this release. But before we get to those …
Simon Sharwood, 16 Jan 2015
Andrew Warfield, Coho Data CTO

Reg Vulture grills Xen hypervisor daddy on latest storage upstart

Interview Like other storage startups, Coho Data has had to swim upstream* against prevailing storage orthodoxy. Its CTO and co-founder, Andrew Warfield, was one of the original authors of the Xen hypervisor, and we recently took the opportunity to ask him some questions about the firm's technology, product positioning and progress. …
Chris Mellor, 21 Oct 2014
The MQ-9 Reaper drone in flight

Linux Foundation plans open-source drone hit

The Linux Foundation is targeting drones through a project building a reliable open-source software platform for Unmanned Aerial Vehicles (UAVs). The Dronecode Project is due to be announced today at the embedded Linux Conference in Dusseldorf, Germany. Dronecode Project is founded on the APM UAV software and code that had been …
Gavin Payne, 13 Oct 2014
A fake tattoo on the leg of Canberra Raiders footballer Sandor Earl, sent by Huawei as an April Fool

Huawei to virtual world: Give us your desktops and no-one gets hurt

Huawei's ambitions in the virtualisation market centre on desktop virtualisation and network function virtualisation for telcos, according to the company's CTO for data centre solutions Ron Raffensperger. The Chinese company was this year's only new entrant to Gartner's Magic Quadrant for x86 virtualisation, a position that the …
Simon Sharwood, 25 Jul 2014
OSR_schematic

Hey, VMware. You've got competition – from a Belgian upstart

Belgian startup incubator CloudFounders has an open source project to provide an networked object storage backend to VMware or KVM virtual machines using a VSAN-like Open vStorage Router (OSR). OSR is a VMware VM, or runs on bare metal in a KVM server, and it scales out by having OSR run on additional virtualised servers …
Chris Mellor, 16 Jun 2014
Ubuntu RHS teaser

Batten down the hatches, Ubuntu 14.04 LTS due in TWO DAYS

Canonical has announced that the latest long-term support release of its Ubuntu Linux distribution will be available in two days. The Linux company made the availability announcement of Ubuntu 14.04 LTS, codenamed "Trusty Tahr" on Tuesday, coincidentally alongside chief rival Red Hat holding its Red Hat Summit in San Francisco …
Jack Clark, 16 Apr 2014
bug on keyboard

Rackspace patches Windows Updater vuln

Rackspace has patched an arbitrary code execution bug in its Windows environment, following an advisory from CloudPassage. CloudPassage discovered that the Rackspace Windows Agent and Updater allowed unauthenticated users to upload a modified version of the agent binary to Rackspace Cloud Server instances. The modified code …
Phosphor Watches World Time Curved

Rackspace catches up to Amazon... four years later: Say hi again to auto-scale

Rackspace has announced the general availability of "Auto Scaling" technology for its public cloud, catching up with Amazon which implemented the tech in 2009. Auto Scaling is a crucial component of any cloud, as it allows new resources to be allocated to live virtualized servers in real-time in response to demand, and without …
Jack Clark, 20 Nov 2013
Coho DataStream 1000

Storage upstart Coho Data decloaks from stealth, slurps $25m

Ex-stealthy startup Coho Data, developer of a “flash-tuned scale-out storage architecture designed for the private cloud that delivers unparalleled performance at public cloud capacity pricing,” has collared $25m in B-round funding. The round was led by Ignition Partners with original investor Andreesen Horowitz contributing …
Chris Mellor, 06 Nov 2013
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Verizon reboots cloud by dropping traditional IT vendors

Updated Big clouds need a tightly integrated stack, and a small number of hardware components that can be upgraded and swapped out en masse. This is precisely what Verizon lacked in its first cloud, and what it is gaining with a new service. The new Verizon public cloud was announced by the company on Thursday, and will see it be cost …
Jack Clark, 03 Oct 2013
Docker Red Hat

Red Hat and dotCloud team up on time-saving Linux container tech

Red Hat is working with startup dotCloud to co-develop new Linux container technology to make it easier to migrate applications from one cloud to another. The partnership was announced by the companies on Thursday, and will see dotCloud's open source "Docker" Linux-container technology get enhancements to work with Red Hat's …
Jack Clark, 19 Sep 2013
ThinkGeek's canned unicorn meat

IBM: Closed clouds are dead meat

After adopting OpenStack and embracing the Cloud Foundry platform-as-a-service, IBM has become convinced that clouds are destined to be made of open source software. In a speech at the PlatformCF conference in Santa Clara, California, on Monday, IBM's veep of software standards and cloud labs Angel Diaz said vendors that "take a …
Jack Clark, 10 Sep 2013

Oracle fires up Virtual Compute Appliance for infrastructure clouds

If you are looking for one throat to choke for a virtualized x86 server stack, the right one is tough to find. But Oracle wants you to wrap your hands around Larry Ellison's neck, and is betting that its new Virtual Compute Appliance works so well and is such a good bargain that you won't squeeze. The system makers that have …

Oracle forging Exa server virtualization appliance

It looks like Oracle is getting ready to roll out another in its line of so-called "engineered systems" – stacks of hardware and software tuned for very specific workloads. This one, which Oracle is getting set to announce in a webcast on August 13, will be aimed at "enterprise virtualization." Presumably it will have a name …

OpenStack faces 'irrelevance and death' without AWS compatibility

Does the OpenStack cloud controller need to support the full set of APIs from Amazon Web Services and other public clouds? Randy Bias, the founder and CTO of OpenStack distie Cloudscaling thinks so.  This week, as OpenStack celebrates its third birthday, Bias issued a call to arms to the OpenStack community to do what rival …

Amazon slices prices on dedicated EC2 private cloud puffs

Maybe there's something in the water – or in the coffee – in Seattle that makes big companies create and maintain monopolies through aggressive pricing. First Microsoft with its Windows desktop and then server monopoly, and now Amazon Web Services with its unending price cuts on its infrastructure cloud. The latest chopfest …
A storm is brewing (Mali, Sahel). Foto: F. Guichard & L. Kergoat, AMMA project, CNRS copyright.

Citrix lets Microsoft Azure spew virtual desktops from the heavens

Will companies want to host virtual PCs in the cloud? Microsoft and Citrix Systems think so. For a certain set of PC users – even those accessing traditional Windows PC applications from a tablet or smartphone that is not running Windows – not only is a physical PC not a necessity, but neither is a data center serving up …

Xen hypervisor gets tech preview support for ARM processors

The Xen Project, which is now part of the Linux Foundation and which is responsible for extending the open source virtualization hypervisor formerly controlled by Citrix Systems, has updated Xen with a new 4.3 release that brings it to ARM processors. In a blog post, George Dunlap, a senior engineer at Citrix Systems in charge …
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SUSE Linux tunes up for latest iron with SP 3

SUSE Linux is juicing its Enterprise Server 11 variant of Linux with Service Pack 3. Among many nips and tucks, the SP3 update brings support for new and emerging hardware to the operating system. The company, the open source operating system arm of the Attachmate conglomerate owned by the private equity trio of Francisco …

Citrix open sources XenServer hypervisor to chase clouds

The XenServer hypervisor is going back to its open source roots, now that Citrix Systems has decided to let go of the code behind its commercial-grade variant of the Xen server virtualization tool. Xen came out of Cambridge University by storm a decade ago, spawning XenSource to offer tech support for the product. For a while …
Oracle Redwood Shores

Oracle puts database, middleware, Linux on Microsoft Hyper-V, Azure

If you were expecting some dramatic, cloudy news from Oracle and Microsoft, as the companies hinted last week they would reveal, you were likely disappointed by the nuts and bolts nature of what the two companies announced on Monday as part of an extended strategic partnership. No, Oracle is not shutting down its public cloud …

Ten years on: How did that cloud strategy pan out?

So the CEO is hearing all about clouds now and the financial director is looking at his pile of beans and as usual wants you to do more with less. And both think it is time for you to build or buy a cloud. Where do you start? The answer is by being brutally honest with yourself and your bosses about everything around you. A …

Juniper betas Contrail control freak for software-defined nets

Interop 2013 Juniper Networks is fast-tracking its Contrail software-defined network control freak to try to blunt the advances of myriad other players that have crashed onto the SDN bandwagon from all angles of attack. The JunosV Contrail Controller, which was not expected to be commercially available until sometime in the first half of …

Verizon Terremark backs Xen-CloudStack combo for clouds

Hot on the heels of the open source Xen hypervisor being moved over to the Linux Foundation as an official collaborative project, Citrix Systems, which has controlled the Xen community as well as the open source CloudStack cloud controller that is one of the viable alternatives to OpenStack, has scored the Terremark cloud …
The Register breaking news

Xen hypervisor leaps into Linux Foundation

The Linux Foundation is embracing the Xen hypervisor, giving major clouds such as Google and Amazon a greater influence in the development of the open source technology. The announcement was made at the Linux Foundation Collaboration Summit in San Francisco on Sunday, and sees the Xen project become a Linux Foundation …
Jack Clark, 15 Apr 2013

Cisco ports Nexus 1000V virtual switch to Microsoft's Hyper-V

Upstart server-maker Cisco is bounding around the Microsoft Management Summit this week in Las Vegas to talk about how it is plugging its technologies into Redmond's cloud stack. First up, as it promised it would do back in the summer of 2011, Cisco has ported its Nexus 1000V virtual switch to run atop Microsoft's Hyper-V …

Amazon makes EC2 stickier with default virtual private clouds

The evolution of the Amazon Web Services cloud has proceeded at a steady pace since 2006, and while a number of companies have built up cloud businesses and close the gaps, Amazon keeps moving ahead. Two recent tweaks to the Amazon cloud make it that more useful, and therefore more sticky for the applications running upon it. …
The second rev of the Oracle Database Appliance, with the X3-2 moniker

Oracle revs Database Appliance to X3-2 – and nearly to Exadata

If you are looking for a server appliance that is pretuned to load an Oracle database on, then Ellison & Co have a new Database Appliance X3-2 they want to introduce you to. Not everyone needs an Exadata database cluster that can scale to petabytes of capacity, and that's why Oracle engineered the Database Appliance for small …
Intel logo

Intel takes on all Hadoop disties to rule big data munching

Look out Cloudera, MapR Technologies, EMC, Hortonworks, and IBM: Intel is the new elephant in the room. Intel has been dabbling for the past two years with its own distribution of the Hadoop stack, and starting in the second quarter it will begin selling services for its own variant of the Hadoop big data muncher. Intel is not …

Rackspace cuts network bandwidth prices on its cloud

Rackspace, which bills itself as "the open cloud company", is cutting prices in its ongoing effort to tear a chunk or three of business away from closed source Amazon Web Services, the public-cloud leader. Amazon didn't just build the first viable public cloud, it keeps cutting the price on its various compute, storage, and …