The Xen® Hypervisor, is an open source virtualization platform that powers the world's largest clouds in production and is the foundation of many commercial products.

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Xen hypervisor setup | Enthusiast | Access VM on host | Sugesstions

Planning to use Xen in a small project to learn about virtualisation, and have selected CentOS as host (previous attempts with Debian failed). Would be installing Xen on a Laptop (ASUS X550LD). Is it ...
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Handling /etc/fstab when upgrading linode from Xen to KVM?

I have a linode that is currently on one of Linode's Xen servers. I see that I am eligible to upgrade to a KVM linode. One thing that concerns me is that Linode's upgrade guide says block devices ...
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Cannot boot migrated Ubuntu VM on fresh XenServer install

It's been a tough couple of days. My server configuration went crazy after a power outage, and now I'm trying to get my VMs back up and running. I reinstalled XenServer to a new SSD in the same box. ...
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44 views

really check if password has been changed

On a non-critical server (Debian 7, kernel 3.2.65 x86_64) running under a Xen VM framework, it's a system I log on once a month under "user1". Today I: - cannot log as user1 via ssh+password - can ...
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150 views

Xen Hypervisor with linux host and Win7 guest - gaming

I'm a bit of a newbie in the linux community, and especially in virtualization. I discarded Windows a while back and moved to linux, mainly because my university uses Ubuntu on their computers, and ...
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is it possible to paravirtualize 32 bit linux kernel on x64 xen hypervisor

If I have a 64 bit Xen kernel (hypervisor) can I run paravirtualized x86 linux guests or does it need to be fully virtualized, just like windows? I would like to install all small memory guests as ...
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57 views

Backup Windows 2008 R2 Server to a ISO file

I want to virtualize a Windows 2008 R2 Server system for testing. At the moment the system in question is installed in a server and I want to make a copy of everything to an ISO file to then ...
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41 views

Is it possible to stealthy boot into a Xen virtual machine? i.e. so no one sees Xen

Since Xen is a type-1 hypervisor and not a type-2, is it possible to boot into a Xen virtual machine seamlessly as if it there was no hypervisor underneath it? I'm talking about it being such that all ...
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29 views

Setting up OpenStack environment on virtual machines

I am learning OpenStack for almost a week. After reading most of OpenStack wiki, my mind still blurry at some point. However it is said OpenStack nodes could be installed on virtual machines (VMs) for ...
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20 views

Memory not releasing after shutting down vm in Xen-4.5

I installed Xen-4.5.0 on a server with CentOS 6.5(v3.2.30 kernel). All works well except when I shutdown a vm, then xl li shows that the vm's memory is not released and physical memory becomes less ...
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123 views

Xen VPS with 2 IPs from 2 different subnets

I am new to Xen and I am trying to understand how to add 2 different IPs on the same guest VPS. First, I am going to explain my node setup, which is a physical server with 32GB RAM and 2 NICs on it. ...
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172 views

KVM or Xen for VGA Pass-through

I'm in the planning phase of setting up a personal virtualization server. One of the virtual machines I want to setup is a Windows box with Steam. Ideally, I want to stream higher-end games to my ...
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27 views

Export from xen to azure

I want to move a Ubuntu Server VM from Xen to Azure Cloud. I exported the VM to a xva format. I converted it to ovf using Citrix XenConvertor and I obtained the vhd file. In Azure I created a disk ...
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170 views

Script to monitor realtime CPU & Bandwidth usage in xen live migration

I need to write a script (bash or python or ??) to perform live migration of a VM in xen, and to simultaneously log and extract the CPU & bandwidth usage of the Domain-0 AND write the output into ...
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190 views

VPN remote access to lan

I am rather new to this. I have done some it/cyber defense competitions in the past and have some knowledge. I am trying to set up a group of about 5-6 xenserver boxes. I want to use xencenter to ...
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22 views

Can Windows run a Xen DomU guest image?

I have a number of XEN guest Domu images. Can I run these directly on Windows?
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1answer
108 views

How to get cpu cores utilizations in xen?

I have installed xen as hypervisor and there are dom0 and some paravirtualized machins as domu VMs on it. I know xentop is used for checking the performance of system and virtual machines, But, it ...
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215 views

Can KVM run on top of host OS?

I was interested in experimenting with Xen until I discovered that it has to be installed bare metal. Hence, if I have a Linux machine and want to use it to run a Xen hypervisor, I have to install the ...
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146 views

Obtain list of all VMs on Xen server with tags

I am trying to compile a list of VMs across our 12 Xen Servers. We use the 'tag' functionality extensively and I would like for the tags to be exported along with the VM names. E.g. Xen Server ...
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69 views

In XEN how can I check if guest is HVM or PVH?

Xen supports various visualizations e.g. para virtualizastion and full hardware visualization. How can I know the type of visualization for running guest?
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267 views

Why I can boot various kerel versions but not XEN kernel in grub2

I have successfully compiled XEN usigng following steps: wget http://bits.xensource.com/oss-xen/release/4.4.1/xen-4.4.1.tar.gz tar xzvf xen-4.4.1.tar.gz cd ./xen-4.4.1 export ...
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39 views

XEN Guest cannot open display error

My setup is : [XEN - dom0] installed directly on hardware [ubuntu 12.04.5 server x64bit] , using it on CLI Mode - no GUI installed [domU - guest] HVM guest created via configuration file, I ...
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19 views

Windows 8 and W2012 Reboot Resets Network

I have Windows 8.1 and Windows Server 2012 running in separate virtual machines on an Xen server. I have had a problem for a while on the 2012 machine, more recent on the W8 machine where every time I ...
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137 views

Xen Bridge Configuration do not bridge eth1 to xenbr0

I am new on Para-Virtualization. I used Xen Beginners Guide to install Xen and configure dom0 it works correctly but i cant configured bridge network for domU. I created debian image like that. ...
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43 views

XEN boot error on Ubuntu Server 12.04

I am trying to boot to xen-hypervisor-4.1-amd64 package following the guide from official Ubuntu website, But whenever I reboot and try to boot into XEN (holding shift on grub and choosing xen ) I get ...
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313 views

Where are Xen guest config files stored?

I'm new to Xen stuff. I have a XenServer 6.5 running, with XenCenter and a Debian installed as a PV VM. I'm trying to setup the extra security now so I don't have to learn about it after I've been ...
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89 views

Backup Xen VM without snapshot

I have a VM in a small XenServer 6.2 and I would like to back-up it before performing an upgrade. The current storage doesn't have enough space to do a snapshot, so I cannot export it. Is there any ...
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109 views

Can I add a Hypervisor to my Windows Desktop and still use the consoles?

I am running Windows 7 Ultimate (for business) and would like to slip Xen or free ESXi (vSphere Hypervisor) in between my current Windows image, and the hardware layer, and still be able to use my ...
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271 views

Relationship between OpenStack and Xen

Xen is an open source virtualization platform that allows you to install a bare metal hypervisor on a machine, which turns it into a host for other guest VMs. I can't really understand what ...
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72 views

How to “sandbox boot” an operating system in a Hypervisor without a full blown host OS?

I was wondering how I could setup a Hypervisor environment that boots an operating system in in a sandboxed¹ mode, without relying on a (full blown) host (Dom0) operating system. The target ...
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223 views

Getting a 4TB USB drive (4k native sector size) to work with Xen and Windows 2008 guest

I am trying to get a new 4TB Seagate USB drive to work with Xen 6.2 and a Windows 2008 R2 virtual guest. The Xen host sees the drive fine, fdisk -l lists it with the correct capacity, etc. I can ...
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231 views

How do I get the system-serial-number for Xen Server?

I would like to find out how could I be able to retrieve the system-serial-number of virtual machines installed on Citrix XenServer. I had referred to ...
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154 views

Transfer VM without shutting it down?

Is it possible to transfer a VirtualBox VM from one server to another without shutting it down? Is there any way to achive this? Does this technology have a name to identify it? As far as I know Xen ...
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217 views

XEN HVM: GUI rendering artifacts on VNC

I'm facing a strange issue running Xubuntu (tried Ubuntu also, same problem with Unity, but no problem with Metacity) on Xen HVM while connecting to it via XEN's builtin VNC. Some parts of the user ...
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483 views

I/O Crash Error in XenServer VM. What to do?

I just installed XenServer 6.2 and installed XenCenter in my own Windows and everything were set ok. I have 2TB 5400rpm SATA Hard Disk Drive, and I am trying to run 32 VMs at once using Xen ...
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102 views

What is the best Xen Hypervisor setup for my system [closed]

I am new to XEN, I have a Asus X99 deluxe, i7-5820K 16gb DDR4 and I want to run VM's just for personal use. I would like to know what distro/setup should I use, I know a bit of Debian and Ubuntu but I ...
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200 views

Xen on ARM Cortex A9

I see that there is a version of the Xen hypervisor for ARM CPUs. However, most ARM CPUs appear not to have virtualisation extensions (and are not otherwise efficiently virtualisable). Hence I looked ...
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28 views

Xen 4.2.xx compatibility with Fedora 17

I know that Fedora 17 ships with Xen 4.1.xx, but is it compatible with Xen 4.2.xx and later versions? I have searched online and found nothing either supporting or denying the fact. If it is ...
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252 views

Can I avoid losing three IPs per network on a bridged Xen networking setup?

About a month ago, I asked this question on Superuser. The answer given there certainly works, but I've run into an issue I haven't thought of before. The setup I had running (based on the previously ...
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263 views

Xen reports that “Host does not support virtualization type 'hvm'”

[root@www www]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Pentium(R) Dual-Core CPU E5500 @ 2.80GHz stepping : 10 cpu MHz ...
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74 views

Command parameter autocompletion like “xe”

I noticed today, when working with XenServer's CLI, that the xe command allows autocompletion with the 'tab' character not only for files, but for parameters too! For example if I write xe vm-[tab] ...
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71 views

How is a wireless network presented to an operating system?

I am wondering how is a wireless network presented to an operating system. If I'm not mistaken, Wi-Fi (802.11) is only the Physical layer of the OSI model. This means that, one layer up, we're ...
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152 views

Can I run my desktop on a bare-metal VM layer to swap between operating systems?

I'm running CentOS as my primary desktop, but I need to be able to use Windows and Ubuntu from time to time to test things on those. As I don't have any extra hardware immediately available, I could ...
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1answer
688 views

How should I configure Xen to allow multiple different IP ranges in the domUs?

I'm trying to get Xen running in a setup where the domUs have a completely different IP than the dom0 (not in the same network range). This answer got everything working within the same /24 range, but ...
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468 views

How should I configure my interfaces with multiple IPs for Xen to use?

I have a server which has a number of IPs assigned to it. I would like to set it up as a Xen hypervisor so that each VM has its own dedicated IP. The way I have my multiple IPs setup right now is: ...
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Unable to browse to certain sites

I have a few guests on a XenServer host, and some sites ( both SSL and non SSL ) cannot be accessed by the XenHost and the Guests. Other machines on the same network can access these sites just fine, ...
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177 views

Xen and Windows 7 domU, can't find CD/DVD drivers

Simple question. When installing Windows 7 under Xen as domU with Fedora 20 dom0, it stops before installing asking for the CD/DVD drivers. I just can't get it past this point. KVM does it too through ...
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142 views

Which XEN IOMMU features are min needed for VGA passthru?

To run HVM (Hardware-assisted virtualization) the CPU must support this by having IO-MMU feature (Intel calls this VT-X). I have an Intel Core 2 Quad Q8400 CPU which support the virutalization ...
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1k views

Xen fails creating VMs using xl toolstack

Ever since xen 4.4 has been rendered obsolete; I tried to switch from xm toolstack to xl. This wasn't really turn to be a simple task though. I've been getting errors, libxl wasn't able to work around ...
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32 views

networking in virtualization

I have a redhat9 as guest and a fedora18 as host. the guest is connected to network but I'm not sure through bridge or nat. I just know that other machines can't ssh or ping it. because they are not ...