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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8
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5answers
2k views

Looking for tips: building a workstation around Xen and GPU pass-through

I'm building my new home machine right now and as usual this will be a heavily overloaded workstation that will serve as development and testing machine, file server and game console (plus I'm adding ...
7
votes
1answer
2k views

Can I change the filename of my ssh public/private key pair?

I created a public/private key pair: ssh-keygen -t rsa -C "me@example.com" I gave a different key file name than id_rsa since I wanted to create a new separate key from my normal identity. I gave ...
7
votes
2answers
3k views

Xen for a Windows/Linux desktop machine

So here's the deal: For some time, I've been running Windows as my main desktop OS with Gentoo Linux in a VM. I've been thinking that running the systems concurrently in a hypervisor instead of one on ...
5
votes
3answers
2k views

Is there any way to run 64bit Virtual Machine on 64bit processor without hardware virtualization (amd-v, vt-x)?

We have a 64bit virtual machine (CentOS) that we'd like to run on 64bit host-machine (may be running under any OS), but that host-machine doesn't support hardware virtualization, which, you know, ...
4
votes
2answers
4k views

Is it possible to run windows under Paravirtualized Xen?

Is it possible to run windows under paravirtualized xen? Linux is possible because you can modify it. If you cannot run windows then what are the other alternatives to improve I/O performance?
4
votes
2answers
99 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 ...
3
votes
3answers
3k views

Can I use DirectX Graphics in Windows with Xen Virtualization?

I want to setup a server on my home network running both Windows and Linux simultaneously (no dual boot). I plan to use the Linux instance as a File Server, and the Windows installation will mainly be ...
3
votes
4answers
3k views

bridge does not forwarding packets centos

I am using CentOS 6.5 64 and use xen to create a virtual machine (CentOS) ifconfig [root@CentOS ~]# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:54:B3:FA inet6 addr: ...
3
votes
2answers
8k views

How do I set up grub2 with Xen?

I am booting a new Xen kernel and it all goes fine up until some point during the boot process when the machine reboots without warning. Unfortunately, I don't see errors flash up just before that ...
3
votes
2answers
1k views

Can I upgrade the CPU without reinstalling my Xen/Ubuntu system?

I built myself a computer a couple of years ago and run it now with Ubuntu 9.04 under Xen 3.0. I'm not a hardware expert by any means, but I managed to make it all work. However, due to the lack of ...
3
votes
1answer
1k views

What are the requirments to installing Xen?

Do I need a base OS to install Xen or can I just install Xen as the core OS? I read that some people have tried installing Xen over Ubuntu but it didn't really work. So if I had to install an OS ...
3
votes
1answer
116 views

Mount volume group(OnApp)

I am attempting to get OnApp setup in a lab using the following documents: OnApp Installation Guide I am one step away from success and to my knowledge based on the information given and my(limited) ...
3
votes
1answer
538 views

Cannot login to Xen guest pv

I've followed this guide to setup a Xen server and my first PV Guest. On the host system I only have two users, root and benny. I usually work through benny. After creating a .cfg for my new pv ...
3
votes
0answers
139 views

How do different virtual machines handle CPU scheduling? [closed]

When you give a guest OS multiple virtual CPUs (vCPU), the virtual machine has to assign them to physical CPUs (pCPU). I can't find any info on how most VMs handle this. There are 2 broad categories: ...
2
votes
1answer
599 views

My KVM is not perform that good as announce

I am using normal PC with the following specifications: Intel Core 2 6600 @ 2.40GHz RAM: 2G Motherboard: Intel DG965RY HDD: 7200 rpm @ 250G I have enabled Intel VT in BIOS setting. I install the ...
2
votes
1answer
286 views

Solutions for virtualized Windows on Linux. Good performance needed

What are good solutions for virtualized Windows on Linux? I need good system performance. I use Xen for Linux virtualization on my work machines, can Xen be used for Windows as well? I also used ...
2
votes
4answers
2k views

Xen VGA passthrough: is it possible to have dual GPU's with single monitor

I hate dual-booting between Windows when I want to play a game and Linux when I need to work. I don't fancy running Linux in a VM and Wine almost never works for me. So, I'm thinking about buying a ...
2
votes
1answer
3k views

Xen fails to boot (timeout mounting /dev/sda2)

I am new to Xen and trying to follow the guide from the Debian Wiki's Xen entry. I have installed squeeze on a VMware Workstation image with plenty of space. The file storage is over LVM. My newly ...
2
votes
2answers
777 views

ulimit broke my server

I ran "ulimit -v 75" to get SBCL working, and now nothing will run on my server. $ sbcl Killed $ vi Killed $ man ulimit Killed $ ulimit -v 256 -bash: ulimit: virtual memory: cannot modify limit: ...
2
votes
1answer
80 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 ...
2
votes
1answer
379 views

Does Xen Support VMs with multiple monitors?

In short, I would like to know if Xen VMs support multiple monitors. I'm interested in setting up a linux box that will achieve the following: 1 VM that utilizes a triple-monitor display (Linux) 1 ...
2
votes
1answer
539 views

Xen Server: Missing Physical CPU

One of our Xen server is built on HP blade. Which is having 2 Quad core Physical CPU. On the Xen it is showing only one CPU, it should show 8 CPUs. processor : 0 vendor_id : GenuineIntel cpu ...
2
votes
2answers
3k views

How to tell if I am on a XEN or KVM Server?

Is there a way to tell if I am on a XEN or KVM linux server? Reason I asked is nothing is on top yet I am seeing load averages high well after I do tasks and I am getting hangs/spikes when I do simple ...
2
votes
1answer
338 views

How to set up dedicated Hard Disk to a VM?

I'm running CentOS with Xen hypervisor. I've two virtual machines running on it (2 DomU and obviously 1 Dom0). I've two hard disks that I'm trying to dedicate exclusively to each of the DomU. This is ...
2
votes
1answer
228 views

Installing Xen: choosing a host, seeking tutorial

I want to install Xen on my PC, but I don't know where to start. Basic usages: Install two OSs (Linux, Ubuntu or Fedora), one for Database server, one for HTTP server (PHP). Install one Windows ...
2
votes
1answer
666 views

Debian Lenny expects udev on a vps that doesn't support it

Primary symptom: /proc/self/fd is there and normally populated, however /dev/fd is not. Process substitution therefore fails, because bash wants to create files under /dev/fd. /dev/.static/ and ...
2
votes
1answer
2k views

Installing Xen on Ubuntu 9.10

I'm doing my first ever installation of Xen, and while the documentation is pretty extensive, I haven't found any thing appropriate to Ubuntu 9.10 anywhere. Basically, in the past it seems you would ...
2
votes
0answers
65 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 ...
2
votes
1answer
451 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 ...
2
votes
0answers
17 views

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, ...
2
votes
1answer
122 views

Archipel / Xen Orchestra

I'm hoping you can help me to get my head around this! We want to start using virtualisation. We intend to rent a large server in a datacentre and use this. I was excited to see that XenServer is ...
2
votes
0answers
162 views

How much performance reduction is ok for a linux router?

I am having thew following (simplified) setup: I have a private Subnet where my PC is located. The subnet goes over a virtualized server into the internet. The server uses internally two subnets: One ...
2
votes
0answers
295 views

Arch Linux PV Template for Citrix Xenserver

I'm looking for an Arch Linux PV template for Citrix Xenserver 6.2. The problem is that my infrastructure doesn't support HVM, so the usual route of bare install and then configure isn't an option ...
2
votes
1answer
931 views

XEN dom0 network Bridge has no connection to domU's

I am using Debian wheezy with XEN 4.1. I have two network bridges xenbr0 and xenbr1. xenbr0 is linked to the real-eth0-nic so the domU's can talk to the outside world, which worked fine. xenbr1 was ...
2
votes
1answer
441 views

How to reset xen hyperviser clock

I have a low cost server running Debian Squeeze stable, using the Xen hyperviser. After a very long uptime the clocks of the unprivileged domains will deviate. Restarting the domains will not fix the ...
2
votes
1answer
339 views

Building a virtual machine structure with Xen or VMware on a normal pc

I have a Acer Expire X3200 (AMD 64 Quad). Consider the pc completely empty. Is it possible to make this machine run a few virtual machines and how? By installing Debian with Xen? By installing ...
2
votes
1answer
701 views

Xen on bare metal, multiple guest OSes — is 3D acceleration on each OS possible?

I have a desktop PC (Athlon 64, 2 cores). I want: to run Windows (Vista most likely) with full 3D support for video games and Youtube, to also run Debian GNU/Linux with 3D support for work, maybe ...
2
votes
1answer
256 views

Scoping a home dev server

I’m looking to build a multi-purpose home development server. In this post, I’m looking to outline what I want from such a system, and the ‘why’s of it, to some limited extent, and finally, some ...
1
vote
2answers
493 views

How to run a executable in DomU from Dom0?

I'm running Xen on centOS. I've no GUI and I would like to run a executable file on a virtual machine (Domain-U/Guest Domain) from Domain-0. Is it possible to do this? Some more Information I'm ...
1
vote
1answer
91 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 ...
1
vote
1answer
4k views

Difference between Xen hypervisor and Xen server

Like title suggests...something is not very clear to me. I am used to virtualbox and vmware, now I'd like to use xen but...I find two different websites, hypervisor and server. What's the difference? ...
1
vote
1answer
1k views

Xen 4.2 on CentOs 6.3 : can't compile a libvirt 0.9.10 xen-activated?

I followed that tutorial for Xen 4.2 on CentOs 6.3. http://www.howtoforge.com/virtualization-with-xen-on-centos-6.3-x86_64-paravirtualization-and-hardware-virtualization When building a new libvirt ...
1
vote
2answers
412 views

Combining multiple linux boxes and create VMs out of it

I am running on Ubuntu. I have a set of linux machines (5 to 6 machines). Which I want to combine as a single resource pool and on demand create multiple virtual instances of machines out of it. ...
1
vote
1answer
270 views

Why is a gratuitous ARP sent out after VM migration?

Is it because the MAC address of the VM changes?
1
vote
2answers
930 views

Compressing CentOS VHD on XenServer

I'm using XenServer 5.6 as bare-metal hypervisor and CentOS 5.3 as guest OS. Because of our custom CentOS edition partitioning features, volume size required to install it fluctuate in range from 60 ...
1
vote
1answer
1k views

What desktop chipsets support AMD's Rapid Virtualization Indexing?

Rapid Virtualization Indexing (RVI) is a hardware virtualization feature that can potentially give significant performance improvement. Intel's equivalent is Extended Page Tables. See ...
1
vote
3answers
169 views

Fool network interface into thinking it is connected

I have a second NIC in my machine that I am using to create a subnet for a cluster of Xen VMs on my machine. Nothing really needs to be connected to this interface as no traffic ever needs to leave ...
1
vote
2answers
1k views

Xen: Is it possible to run an installed Windows inside Xen?

Is it possible to run an already-installed Windows inside Xen, similar to how Parallels Desktop and VMware Fusion can run a bootcamp Windows as a VM on Mac OS? My plan is, in a few weeks when Windows ...
1
vote
1answer
162 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 ...
1
vote
1answer
59 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] ...