Xen is a hypervisor based virtualization. It supports x86, AMD64, IA64, ARM and other CPU types, and Linux, Windows, Solaris and *BSD guest operating systems.

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xen cluster multiple nodes

I'm looking for information on how to build a Xen HA cluster with multiple nodes. I find lots of information on how to build clusters with two nodes, but that is really not enough. I've built one with ...
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446 views

Equivalent of xen capping in kvm

I have been using xen hypervisor. I use the credit scheduler and make use of capping in credit scheduler. Now I am migrating to KVM . Is there any good equivalent of that VM capping in kvm ? Any help ...
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308 views

Buffer/Cache overflow Ubuntu 10.04 LTS Xen Rackspace

I'm running: Ubuntu 10.04 LTS Server AMD64 in a 512MB XEN paravirtualized environment. lighttpd v1.4.26 PHP v5.3.8 MySQL v5.1.41-3ubuntu12 The issue is: I first started on a '256MB account' which ...
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751 views

How to track a single Xen VM's I/O utilization

What is a good way to monitor I/O individually for Xen Virtual Machines (not Dom0)?
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2k views

Boot hanging on SELINUX?

SELINUX is disabled on this this machine (which is a CentOS instance under Xen) but the boot process gets to a point that mentions an audit and SELINUX and then hangs. Is it ever going to come back? ...
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186 views

Xen host: vm's management best practises

I just wanna know what is the most recommended method to use for managing your vm's. Let's say you have big dedicated server something like 8 cores cpu and 24gb ram. What method you'd choose for ...
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1answer
2k views

Slow http/ftp transfer speed from windows server 2003/IIS 6

I have a web service running under IIS 6.0 on a Windows Server 2003 R2 machine. One of the web service calls returns a very large dataset (10 mb). When the client application receives this it gets the ...
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1answer
271 views

SSH get trace to host

When using some kind of XEN VM's as user, how can I get trace to host where SSH leads to? I encountered problem, that when listening SSH server on ip from ifconfig, I couldn't connect to it. Need to ...
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1answer
140 views

Fast virtualizing Linux on top of Windows [closed]

I'm running a Windows workstation, and doing a lot of Rails (Ruby) development. Rails runs about 3x faster in Linux, so I intend to run a Linux VM on my workstation, to test the app. It's important ...
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88 views

CentOS/Xen Hypervisor Completely Locked-Up, Where To Look For Answers

Our hypervisor server running CentOS and Xen completely locked-up just right now. The screen was completely blank. I had to hard reboot, and everything came back up normally. No indication of a ...
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1answer
438 views

xen-sources, different versions different problems

I'm trying to get my xen-sources compiled and I'm having mixed results depending on which version I use. So far I haven't got any of the currently available (as of a week or so ago) xen-sources ...
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4answers
592 views

ZFS or hardware RAID5

I got couple servers not long time ago with pre-installed hardware RAID5. I plan to use those servers as a dedicated NAS (with some VMs) on my LAN. Currently I see these options: disconnect HDDs ...
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1answer
2k views

Change dom0 MAC address in Xen?

I am testing out the new Xen 6.0 server and am very new to Xen in general. I have installed the basic Xenserver Free, so I'm not putting Xen on top of an existing Debian install for example. Because ...
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616 views

Xen NAT dom0 public IP domU port forwards

I would like to jail my services Mail, HTTP, Dev into seperated VMs using Xen. I have one public IP and would like to put all domUs in a private LAN an expose the services via port forwarding. What ...
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1answer
992 views

Xen high packet loss

I have a node running 30 xen vps. When I ping my node IP, it's okay, but when I ping the guest IPs, there's high packet loss. Even when I login to my node to ping guests, there're high packet loss. ...
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3answers
423 views

xen 4.0 squeeze fails to start guests with: launch_vm: SETVCPUCONTEXT failed

As Chris Benninger says over at: http://www.benninger.ca/?p=58 lots and lots of people have the problem with Squeeze and xen4.0 telling them: launch_vm: SETVCPUCONTEXT failed (rc=-1) but nobody ...
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1answer
430 views

Does ESXi 5 have a “routed IP” feature like Xen?

I have a dedicated server that I would like to use ESXi 5 on. I previously had Xen and it worked great. Initial network configuration was a bit confusing. The problem I have is the hosting company ...
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4answers
989 views

How do I deploy multiple virtual machines at a time?

What I need to do is create a virtual machine template and deploy up to a hundred copies of it at a time. I don't care if this is done in Hyper-V/SCVMM, VMWare ESXi, Xen or VirtualBox, as I can work ...
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169 views

xen-4 single nic dom0, add second bridge

im running xen4, my dom0 is debian6 It has a single nic and im having hard problems creating a second bridge to have two virtual nics inside my guest. i tought on using dummy dev, but i had read ...
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1answer
2k views

Disabling IPV6 on Centos6

I want to disable IPV6 in the new Centos6 virtual server I have just setup in Xen. I have already followed the instructions here and then rebooted/restarted networking. Update: followed the below, ...
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2answers
4k views

How can I obtain a new XenServer license using only the command line?

Many sites explain how to renew the license using XenCenter. Is there a way to do this directly from the console?
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2answers
3k views

Mounting filesystem of VM from dom0 in XEN

I have XEN 4.0.x.x and Cent os 5.5 There is an .image file of each VM stored on dom0 in /var/lib/xen/images directory. Is it a some block on the hard disk which I can mount this file from dom0 and ...
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2k views

xm console command is not working in XEN

I have XEN 4.0.x.x rpm with CENT OS. I have set it up and have many VMs on it. But problem is when I execute 'xm console ' command from dom0, command just hangs dom0 and some 'y' comes up in next line ...
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1answer
153 views

Webserver: NAS vs DAS

Currently we have 1 server that runs a Xen 4.0 kernel (debian squeeze). On this server we run several virtual machines (2 webservers, 1 mailserver, samba server, database server) (HDD is configured in ...
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3answers
1k views

Is there option to provide IP address while cloning a VM itself in XEN

I use XEN virtualization platform. I have configured its networking in xenbr0 mode. I have set up one base VM and I am cloning it to create new VMs by using virt-clone command. My question is there ...
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731 views

Error while starting 9th Virtual machine installed on XEN

I have a blade server of HP proliant with 64 Gb of RAM and 1TB hard-disk. I installed Cent OS 5.6 with XEN enabled on it. I used xenbr0(xenbridge) mode and not virbr0 mode for configuring my ...
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2answers
379 views

xen host with 48gb ram for 32bit guests

I have a Linux rhel xen host which will be running many 32 bit guests. (The guests have to be 32bit). The server has 48gb of ram, and currently it runs a xen kernel but this only sees 16gb of ram on ...
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1answer
3k views

Anybody can tell me why isn't my EC2 AMI booting?

I'm trying to make my own EC2 AMI. I used debootstrap to install the packages onto a partition, copied the kernel modules from the running AMI (Amazon linux) and rebooted. This is what the console ...
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1answer
386 views

virtio /proc/net/dev

we are doing some VM (citrix-xen) / real machine benchmarks at university and ran accross a strange behavior. we used netperf's stream test to meassure the performance between the two machines. both ...
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1answer
2k views

Systemrescueconsole after install xenserver tools | How to use the Recovery Cosnole

I have trouble with Windows Server 2008 R2, after updating XenServer tools the server starts in Recovery Console from Drive X, on Drive C is a system reserved partition and on Drive d there is the ...
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1answer
743 views

No Gigabit NIC card in Xen 3.0 CentOS 5.6

I have a CentOS 5.6 linux host running two Windows Server 2008 R2 VMs in Xen. The problem I'm having is the NIC card in any VM shows up as 100Mbps and not 1000Mbps. I would like to be able to give the ...
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2k views

KVM to Xen migration

I've recently been appointed to create some VMs for production use, and went gung ho into making a KVM based VM instead of finding out what our production server uses. I've only recently found out ...
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2answers
643 views

centos 5.7 domu install problem on centos 5.6 dom0

i'm running centos 5.6 as dom0 and want to install centos 5.7 as domu but every time i start installation the process stucks on "Starting install process.This may take several minutes..." I install ...
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3answers
719 views

Managing the Xen Cloud Platform

Could someone recommend a web-based tool for managing XCP? I have 6-7 x64 boxes that I would build into a small private cloud for a group of developers.
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147 views

Server Virtualization Platform [closed]

I am running a small (really small) business and would like to virtualize a server. Historically I have run VirtualBox for client work, but I feel like there must be a "server" alternative that runs ...
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2answers
471 views

Where has the xen.git git repository for Xen gone since the Kernel.org attack?

Has it been put up anywhere else for now? I know the Kernel has been put up on Github for now. The git url that we were using was, git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
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86 views

VPS displaying funny characters instead of special characters

Pretty sure it doesn't matter but I've had about a dozen OpenVz vps' and never seen this until I bought a Xen server for the first time. Special characters like « get all funky and look like this: ...
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2answers
542 views

no network or disk devices in Arch Linux Xen guest during installation

I'm trying to install Arch Linux under Xen as domU (Guest) from Arch Linux official 2011.08 x64 Core iso image. My web hosting offers a SolusVM control panel with ability to install custom ISOs, so I ...
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1answer
272 views

Location of vm data on xen center

I can't find the vm data (metadata files, disk images) mounted anywhere on the xenserver server. Where is it located, and how can I reach it from dom0?
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420 views

ArchLinux under Xen fails to see root fs after kernel upgrade to Linux-3.0

I bought a VPS but the hosting company doesn't have a prebuilt image for Arch Linux x64, so I have to install from ISO using VNC in SolusVM. The installation works fine, the box (Xen Guest) is ...
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3answers
3k views

Centos Xen resizing DomU partition and volume group

I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) ...
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2answers
586 views

Can I force the Linux kernel to use a specific vga adapter for output when booting?

Suppose I have a Linux Xen machine with multiple graphics adapters + an onboard graphics adaptor. Suppose they are all PCIe adapters. I am guessing that the Linux kernel decides to use whichever ...
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1answer
237 views

My xen installation is rebooting randomly. How do I track the error?

I have a test xen installation that is using the gfx_passthrough option. It appears to run fine. However, after about 15minutes the whole xen installation reboots for no obvious reason. I don't see ...
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2answers
528 views

Centos 6.0 + Xen

So now that Xen is no more in Centos' repositories, should I still use it or migrate to KVM? I have to say that I am not very inspired by KVM at the moment and I've gotten pretty familiar with XEN ...
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1answer
295 views

How can I create a vmware disk with XEN?

I found that in XEN I can use vmware-disk images. But can I actually create such a disk with pure XEN-means? I want to create a server with XEN and move the corresponding disk later to VMWARE (in a ...
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2answers
2k views

iptables rule to block incoming/outgoing traffic to a Xen container

I'm trying to setup IPTABLES on my xen host server that will block incoming and/or outgoing access to a xen client on the same machine. Specifically, I need to block outgoing port 25 traffic and ...
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4answers
601 views

Transient network dropout for Xen DomU's

We've got a CentOS server running a cluster of virtuals. Occasionally the cluster's internal network drops out for a minute or so ... and then comes back. The problem is somehow related to the ...
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1answer
229 views

Citrix and Ubuntu Server / Ubuntu Clients for VDI

does anyone have any experience running ubuntu as a hosted desktop using XenServer have any reasons why I should not pursue this option?
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2answers
912 views

Make date change persistent after reboot of xen VM with CentOS

I would like to permanently change date on a xen VM running CentOS 5.5 I've set xen/independent_wallclock = 1 in /etc/sysctl.conf (and /proc/), but after reboot date is reset. I would like it to be ...
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1answer
296 views

Nvidia Tesla XEN PCIpassthrough

has anyone managed/tried to pci passthrough an nvidia tesla card to a xen domU?