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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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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106 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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596 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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60 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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83 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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3answers
362 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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1answer
578 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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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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386 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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1answer
642 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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2answers
825 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
1k 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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422 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
738 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
347 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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1answer
763 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
591 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
230 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
174 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
558 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
296 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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2answers
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
1k 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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1answer
169 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
699 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 ...
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1answer
95 views

Can I back up my Xen-based VPS Remotely?

I have a Xen-based VPS instance of Ubuntu Server 12.04. I'd like to maintain my own offsite image of my install. The vendor does offer a variety of backup options for additional costs. I'm doing an ...
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1answer
117 views

Remus or alternatives

Is it possible to set up Remus to act as a high availability server across 3 locations. Has anyone set up something like that. That is A would be main site, which would have an HA set up at B, and C ...
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2answers
601 views

Setting Up Xen and Network Bridge on Debian 7

Setting up Xen and Network Bridges on Debian 7 Hi there. So i am finally going to try out some virtualisation on my new dedicated machine, however i am having some problems / confusion on setting it ...
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1answer
302 views

Server hangs after typing reboot command

I have a Debian Wheezy installation with Xen in kernel. All is fine but ... when I type a reboot command or shutdown -r now, my server is stuck and I see only that info on screen: INFO: task ...
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3answers
8k views

Ubuntu 12.04 Netinstall URL? Xen Host

Well I have an Xen server, I've got a CentOS container up fine but a friend of mine wants (oh god) Ubuntu Server 12.04, why he can't use Debian is beyond my understanding. But anyways, I can't ...
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123 views

opensm reports - Invalid requested MGID. What does it mean?

I've been working on a virtualized SR-IOV infiniband interface under Xen. If I run the OpenSM daemon under Dom0 IPoIB appears to work in the passed through VF. However, opensm starts using a lot of ...
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3answers
12k views

How to connect to xencenter console remotely?

I need to administrate xenserver remotely. I have redirected 443 port in my router and now I can administrate XenServer. But I need to create VMs, how can I use XenCenter console to see VM desktop ...
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4answers
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What are the benefits of “enterprise-level” virtualization?

For a company with modest virtualization needs - VirtualBox is currently doing fine at hosting a few light servers - what would some of the benefits be of moving to a more robust platform? I'm ...
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2answers
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RHEL Clones (Centos, Scientific, CERN) network installation on XenServer 6.2

I'm trying to install a Scientific Linux CERN 6 guest on XenServer 6.2 through the network with PXE Booting but it hangs in the message: mounting /tmp as tmpfs... done I'm not using the most ...
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FreeBSD XEN kernel not booting in XenServer 6.2

I have a XenServer 6.2 host, and I am trying to get a FreeBSD-9.1-i386 guest to run in PV mode. The installation of the guest is fine, but after a reboot with the new kernel the system does not boot. ...
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1answer
205 views

How to bond NIC on a virtual machine?

I'm puzzled about this process. Historically when I've setup an LACP bond on a piece of physical hardware I have to create the analogous setup on the switch. How does this work with a virtual machine ...
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2answers
605 views

Blocking STP Traffic

I am using Xen virtualization with a bridged mode netwrk. I noticed that there is a lot of spanning tree (as understand) traffic coming from a network. Such as: STP 802.1d, Config, Flags [none], ...
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4answers
3k views

Can I virtualize multiple hosts into one virtual system?

I have 5 computer systems in our small office. From my basic understanding of Virtualization technology, I think I can virtualize the 5 systems into one big virtual system. I wish to confirm this. ...
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102 views

Xen dom0 rebooting

I am using Xen version 3.0.3 and running 4 domU's on this.(guest OS is windows) suddenly my dom0 reboots for no reason.This is happening frequently for last 2 days. I checked xend and system logs but ...
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233 views

OpenVPN bridging for Xen VMs

I have a following situation and need your help. My client has several servers-routers in different GEO regions and some servers within one DC which are used for a Xen virtualization each. Routers ...
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2answers
159 views

Why would you use Xen as opposed to OpenVZ for trusted Linux-only host/guests? [closed]

Every time I need to create VPSs out of one of our machines, I (re)think the virtualization technologies, and seem to end up with OpenVZ being the most suitable for performance reasons when all I want ...
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1answer
651 views

Xen USB pass through

Running the Xen (Debian). I want to access the iKey USB dongle from Windows DomU. I have 2 PCI: lspci: 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:1a.0 ...
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2answers
858 views

Considering XenServer: mixing hardware configurations?

I'm having an internal debate over using XenServer and hoping for some info from 'those who are more informed'. Specifically: VMWare states that it's not a great idea to mix hardware of different ...
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4answers
2k views

XenServer for NAS and Virtualization

I'm very new to all this so please go easy on me! I'm wondering whether you can run a NAS and virtualization with XenServer on the one box. Basically, we need virtualization and we've picked ...
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9answers
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LVM snapshots as a backup strategy

How viable as a backup strategy would be periodical LVM snapshots of xen domU's? Pros, cons, any gotchas? To me it seems like the perfect solution for a fast, brainless restore. Any investigation ...
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1answer
125 views

Xen: what are domU kernel config requirements for live migration?

We recently added iSCSI storage to two Xen servers running a mix of Gentoo and Ubuntu 10.04 and 12.04 domUs. When trying out live migration of domU I found that I can migrate just fine the Ubuntu ones ...
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397 views

Cheap machine with Xen to have more than one personal dev servers with RAID option?

I do not have a lot of money so when I need a personal dev servers I decided I will use Xen on one machine to run various OS's. Although, I really like Dell Zino ...
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1answer
182 views

XEN VPS Speed Limited [closed]

I am just wondering if people can help me troubleshoot something. I currently have a dedicated server with Xen SolusVM set up on it. The VPS seems to be limited on its download speed. I ran a test ...
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182 views

Xen Kernel - Only One Core Showing

So I have a dedicated server running the Xen kernel but for some reason it only shows one core instead of 4? Does that mean that my VPS that is running is only getting access to the 1 core or do they ...