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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Automate Live Xen migration of VMs to achieve dynamic load balancing in Open source environment

DRS in Vsphere is paid. Is there exist any alternative to achieve dynamic load balancing through automating live xen vm migration in open source environment ?? Also,if required, how can write our own ...
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Error when enabling HA on Xen Server

We have 4 Xen servers - 6.2 build 70446c - one shared storage - accessible via NFS. We disabled HA in order to solve some issues with a live migration that was stuck. I put the master on that pool in ...
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53 views

Xen multiple simultaneous live migrations

I have some VMs on a physical server and I need to migrate them on another physical server. Both server are running Xen hypervisor. I attempted to migrate them simultaneously by executing the commands ...
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294 views

Is there a way to give a xen vm with windows more than one virtual cpu?

I have a quad core machine which is running debian with a xen kernel. I am running a couple linux servers on there which don't do a lot of CPU intesive stuff, but I have there a windows server 2008 ...
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49 views

Xen doesn't boot after install [closed]

I tried to setup Xen by the instruction released on the site of my hoster. I installed Xen, completed RAID setup as it is told in the instruction. Rebooted and succesfully connected to Xen from ...
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2answers
130 views

DRBD Madness on Virtual Environment (XEN)

Right now I am using DRBD to replicate two directories (/var/www and /var/spool/mail) on two different XEN VPS's and they're 7000 Miles away from each other! on the top of that I am using a ...
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2answers
153 views

DRBD Dual-Primary Obstacles

I have DRBD installed and configured on two different servers, everything is working as expected but I am having a horrible I/O disk read/write speed and network latency like crazy, my shared ...
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4answers
2k views

Visualizing Xen Performance and Utilization

VMWare's vSphere console and Veeam's monitoring utilities do an admirable job of showing admins various statistics on CPU usage, memory usage, percent utilization, etc. of VM's and the hypervisor ...
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1answer
114 views

Installing DRBD on XEN CentOS 5.8 (Stable)

I am trying for days to achieve HA with fault tolerance between my existing two XEN VPS's one located in Tokyo and the other located in US (both have the same setup and the same configurations, I am ...
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71 views

Unison and Resolving Conflicts with diff3

I installed Unison because I wanted a two-way synchronization to my DRBD directory, my logic is a little bit complicated so I am stressing on the problem itself and ignoring unneeded information, ...
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2answers
870 views

Physical to Virtual Xen on Debian Squeeze

I'm trying to migrate various services from a physical Debian Squeeze box to a number of para-virtualised Xen machines. This is my first venture into Xen, so I'm planning on doing this step by step: ...
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1answer
99 views

How to use the same IP for dom0 and one domU in XEN

I have currently a Xen on a debian wheezy dom0. I have 6 (public) ips and I would like to setup 6 VMs (each using one IP). To keep access to dom0, I'd like dom0 ssh to bind on one IP port (lets say ...
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257 views

XenServer open vSwitch performance downgrade

I'm trying to capture part of an inter hypervisor traffic between 2 virtual machines running over XenServer 6.2. I want to mirror some TCP sessions to a 3rd virtual machine with minimum affect to the ...
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67 views

GFS2 without LVM on CentOS 5.7

I am using DRBD and I just synced 40GB between 2 nodes for the last 3 days and I am using GFS2 without LVM, I formatted the partition just fine but now I can't mount it /sbin/mount.gfs2: invalid ...
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1answer
92 views

Configuration of a small-scale xen server

We are looking for good practices for setting up a xen server (4 cores, 32gb ram). There will be 6 VM (+ dom0), running personals servers (probably low CPU demands). Once the system will be ...
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1answer
123 views

Cluster IP Address in HA Environment CentOS (5.x)

I am in the process of installing High Availability CentOS (5.x) setup with Fail-over capacity, I have 2 identical XEN VPS's in two different locations, every VPS has a private IP and a public IP, I ...
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1answer
3k views

How to change boot device on vm installed on Citrix Xen Server to DVD

I have installed Centos 6 on my new Xen Server (XenServer release 6.2.0-70446c). Everything went smooth. System is working fine but now I want to change boot device on that VM to boot from DVD (iso ...
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163 views

xen and port forwarding from dom0 to domU

I have a server running Xen with the following network configuration root@ubuntu:~# cat /etc/network/interfaces # The loopback network interface auto lo iface lo inet loopback auto xenbr0 iface ...
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3k views

How to find dom0 name from hosted domU

I'm actually testing RHEL 5.3 with Xen between two servers in order to have a disaster recovery solution. So I'm playing with moving my domU from one dom0 server to the other server. Unfortunatly ...
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2answers
645 views

Error running xe sr-create

I'm trying to add a new SATA drive (SSD) as a local SR. XenServer may have seen the drive before, but I don't recall every doing anything with it. I'm attempting to run this command: xe sr-create ...
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1answer
91 views

Smart solution for XenServer firewall?

I've been searching for a smart solution for a XenServer firewall for about a month now. The documentation for the new default networking backend "openvswitch" is not that detailed and I can barely ...
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22 views

Xen Guest Network

Does anyone know of a way to change the Vlan for a guest system from commandline. I know from the interface you can just do it via properties but when trying to do it on the backend it says the ...
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1answer
4k views

XenServer Converting HVM to Paravirtualised

Recently I have been tasked with the daunting process of converting a setup of HVM enabled VMs (running on Citrix XenServer 5.6.0) into PV (paravirtualised) containers. The constraints of the project ...
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73 views

Xen 6.2 guest IP Assignment

so basically I have written a provisioning system that provisions from a billing system onto XEN. Right now I am assigning a DHCP IP to the guest on boot. The host access the client server via ssh and ...
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506 views

CentOS 6.5 Xen Virtual Machine Issue 'this function is not supported by the connection driver'

I am trying to segment my system into a number of virtual machines but just cant seem to get this to work. I think I am close but not quite there. I have install xen, virsh, xl etc and I am using ...
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49 views

Xen DomU images running on Ubuntu 12.04

I have backed up the contents of /etc/xen/ and /var/lib/xen and have installed Ubuntu 12.04 hoping to migrate off of CentOS. I am attempting to test some of these images and am receiving some odd ...
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67 views

How can I export a XenServer virtual machine with all its snapshots?

Is there a way to export a virtual machine running on XenServer with all its past snapshots? I have tried to export a VM through XenCenter (right click on the machine and "Export..."). After importing ...
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257 views

Xen USB Passthrough error - Can't add usb device to a guest with usb disabled in configure file

I have Lubuntu 13.10 installed as host. I installed xen 4.3.0 using apt-get and have created 1 guest which is Ubuntu 12.04 LTS. I am trying to pass through USB devices from Dom0 to DomU. "lsusb" on ...
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3answers
247 views

Changing iptables chain from port based to ip based

Im working to limit access to a new XenServer 6.2 installation. The default iptables rules on the boxes have a RH-Firewall-1-INPUT chain that exposes quite a bit to the outside world. Without going ...
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308 views

need help SolusVM Xen-pv error

I recently use Solusvm and xen and I have a problem with xen-pv there is a xen-pv template by default with the solusvm Centos-5.3-x86 I have created a machine to test it but I have this error : ...
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1answer
2k views

How to unhide a VM in Xen?

After failed OVF import, I have some VMs which are appearing in XenCenter only if I enable Hidden Objects option in View menu. How can I unhide a hidden Virtual Machine in Xen Server?
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248 views

smartctl or hddtemp for xvda [closed]

I'm trying to check the state of the drives on a remote server running Debian wheezy. I'm using a software RAID10 on top of, I guess, xen, since the entries in /dev are /dev/xvda and /dev/xvdb But ...
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372 views

Xen dom0 bridge interface drops a lot of RX packets?

I'm running Gentoo Hardened as Dom0. It also acts as a router/NAT. There's a bridge interface called br0 which contains a pci-e wlan card, ethernet nic & domU. bridge name bridge id ...
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728 views

how to install debian from a rescue cd (via ssh)

situation: server with RAID 1 (2x1000GB) currently logged in via SSH (network based debian rescue cd) need to accomplish: install a debian based Xen (maybe with: ...
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2answers
2k views

How to run a Turnkey Linux virtual machine on XenServer?

Turnkey Linux distributes Linux virtual machines in a Xen compatible format. I have a XenServer instance running and I would like to run a recently downloaded Turnkey Linux virtual machine on it. But ...
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298 views

xen hotplug can't add vif to eth0: operation not supported

I am new to xen and I am trying to get a domU running but I am having problems with it. I think my network card might not support bridging which is bizarre. This is the error I get when trying to ...
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1answer
543 views

xen-create-image does not create inird or initramfs image and domU does not starts with system image

I have Fedora 19 as Dom0. To create image I run # xen-create-image --hostname=debian-wheezy --memory=512Mb --dhcp --size=20Gb --swap=512Mb --dir=/xen --arch=amd64 --dist=wheezy After generation ...
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1answer
209 views

Changing the mac address in a libvirt xml config file breaks network connectivity for the guest

I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
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106 views

Unable to get network on XenServer VM

I am trying to get the network on one of my VM configured: The following is the configuration: auto eth0 iface eth0 inet static address xxx.xxx.xxx.225 netmask 255.255.255.240 network ...
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1answer
437 views

Xen dom0 reports incorrect amount of RAM with dom0_mem set

I've done a fair bit of searching about this, but have found nothing that answers my question. I have a system with 6GB of RAM which acts as a Xen server. For reference, it runs Ubuntu 12.04. I've ...
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1answer
403 views

Using ZFS or XFS on a Xen guest running Linux

Background: I'm investigating the viability of using a filesystem other than ext3/4, with the ability to run snapshots for backup and rollback purposes. The servers under consideration are mailbox ...
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1answer
158 views

Network traffic is not being forwarded from a VM to the network using a bridged interface with Xen + libvirt

I'm having trouble getting network access from a VM that I'm running using Xen and libvirt. I've been trying different things and reading similar posts online for a couple of days but I'm really stuck ...
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1answer
116 views

XEN configuration on dedicated server at 1&1

I am just trying to install first time VPS on my dedicated server from 1&1 (12HT CPU, 30 GB RAM). The dom0 is using DHCP to get it's network configuration with ip 87.106.73.113 on eth0. I have ...
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2answers
288 views

Xen VPS not reflecting the RAM upgrade using xm mem-set

I'm trying to upgrade RAM on a Xen VM without reboot. Although it looks working from the host node, the VM isn't picking up the upgraded memory. Upgrading from 756 MB to 1024 MB. Below are the ...
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3answers
2k views

How to disable “safely remove hardware”

I have some windows 7 virtual machines in xen that have devices showing up in "safely remove hardware". I don't want users to ever be able to remove/eject any hardware at all. I'm told vmware has a ...
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1answer
140 views

HP ProLiant DL160 Gen5 Virtualization

we want to create some vm's on older server. Its an HP ProLiant DL160 Gen5 with an Xeon 5405. So by the intel specs (http://ark.intel.com/products/33079) the cpu included the VT-x technology. But ...
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1k views

XenServer Shared Local Stage

I am new user of XenServer 6.2. I have multiple servers connected to Pool/Cluster. Each server has 4 HDD with sw raid10. I would like to make local storage shared because of need quick migration. ...
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1answer
888 views

Cannot change date/time on virtualized centos install without a reboot

I have a dedicated web server which is running centos with xen virtualization that has centos installed on the vm. I do not have access to the parent server, I can only manipulate the vm, of which I ...
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109 views

Monitoring performance metrics from Xen (xend) with Java

I need to write a Java application that is collecting and monitoring (remotely and local) performance informations and metrics from a Xen hypervisor. This Java application should fetch the same ...
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2answers
422 views

Alternatives to bridging infiniband ipoib within xen domains?

I've installed xen-hypervisor-4.1 package onto an Ubuntu 12.04.3 server. It has an infiniband adaptor installed and I run IPoIB with it. What I'm wanting to do is provide the ipoib to one or more ...