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 bridge - block traffic from port range - iptables / ebtables

I use Xen with bridge interface : - eth0 - viifbr0 - Name of VM interface : vifv10XX.0 Do you know if it is possible to block output traffic from source port range for a domU please ? If yes, can ...
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53 views

Xenserver networking in VirtualBox not working for DomU

I am trying to understand if/how unikernels work, using HaLVM and MirageOS and in order to experiment with those tools I have setup a XenServer virtual machine inside a VirtualBox on my Mac. ...
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2answers
795 views

xenserver - xe-toolstack restart - i lost connection from xencenter

After Xencenter-toolstack restart i lost connection from xencenter I try to restart using ssh - putty following message is showing and i lost the browser access also ............ All xe ...
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4answers
151 views

Xen - reduce resources/hardware limitation?

After I chose a Xen VPS provider, they said me that Xen doesn't let them downgrade resources/hardware so, because of this I can't downgrade my plan. I think that this limitation is strange... Can you ...
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3answers
5k 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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1answer
148 views

Xenserver 6.5 High Availability

I'm running xenserver 6.5 and I just configured high availability. I noticed that there is the option for start order. Is there a best practice for start order when it comes to HA? Obviously the more ...
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2answers
1k views

How to Run Updates Xenserver 6.5 Free Edition

I recently installed the free version of xenserver 6.5. Right now I can run updates through xencenter which is simple and easy. I've been reading though and I've come across a few articles mentioning ...
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4answers
12k views

Citrix XenServer: how to add RAM to a guest VM without XenCenter?

Is it possible to add RAM to a guest VM in without using XenCenter, but from the host machine console or a remote machine?
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1answer
2k views

xenserver: installation via kickstart file after adding storage

export MGUID=`xe vm-install template=centos6 new-name-label="centos 6 test install 3"` xe vm-disk-add disk-size=11GiB vm=$MGUID sr-uuid=$STORAGE_UID device=0 xe vm-param-set uuid="$MGUID" PV-args="ks=...
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2answers
4k views

xenserver - add secondary hard drive

I had a secondary hard drive installed on my xen server but it's not showing up in xencenter. Does anyone know the command to do this? I'd also appreciate the command to add a secondary drive inside ...
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1answer
343 views

Debian Jessie not picking up xen virtual framebuffer

I have a Xen 4.1 installation on Debian Wheezy, administered through xm. When I boot a Jessie DomU I get output on the emulated VGA card / VNC display only for the first few seconds of boot, then it ...
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76 views

Xackup Backup Type for Xen Server 6.5

I'm running the Xackup trial and started backing up a few linux and windows VM's. I selected disk and memory state as the type of backup. Everything ran fine and backed up ok. When I went to edit ...
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1answer
47 views

Create something like Citrix XenDesktop using Xen [closed]

I am doing an academic project. I want to deploy a Virtual Desktop Infrastructure for my college. So, is there any way/guideline to make something like XenDesktop using Xen on a Linux Distro from ...
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2answers
3k views

Windows Server 2008 network speed slow, Xen 3.4.3 HVM ISO

I've setup a VM running Windows Server 2008 on a host node running Xen 3.4.3-5 and the following kernel: 2.6.18-308.1.1.el5xen #1 SMP Wed Mar 7 05:38:01 EST 2012 i686 i686 i386 GNU/Linux The network ...
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0answers
45 views

NAUbackup features + Snapshots

Does anybody know whether or not NAUbackup captures the memory of a vm, along with the disk, when it takes a snapshot? I'm running xenserver 6.5 on three blade servers and I setup NAUbackup to backup ...
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1answer
304 views

Change Xenserver 6.5 MTU

How do I go about change the MTU setting for my management interface in xenserver 6.5? Right now its set to the default 1500 but I want to increase it to 9000. For my setup I have 2 nics on each host ...
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22 views

Xen hypervisor randomly shuts down machines

We have got an ubuntu 14.04 LTS server with XEN software installed. Everything worked fine untill a day ago a Windows server stopped working (Windows server 2012) Now it's shuts down every 30 minutes ...
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52 views

Start xend service automatically on boot fails

I am trying to auto-start xend and xendomain service automatically on boot as soon as I log into XEN-dom0 (on Ubuntu server 12.04 x64) so that whey i type : sudo xm list the hypervisor lists me all ...
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1answer
30 views

Xen routing from VM-bridge-eth1 to cable to eth2-bridge-VM

I have a Debian server running Xen 4.4. The server has multiple ethernet interfaces. I would like to set up: vm1 (IP 10.1.1.2/24) <--> xenbr1 (IP 10.1.1.1/24) <--> eth1 vm2 (IP 10.1.2.2/24) &...
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71 views

After copying Xen DomU to another machine, all network config in Windows is lost

Background Our company have about 40 Xen domains installed on single server, installed and managed by suite of proprietary programs. Most of the virtual servers are managed by our customers, and we ...
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2answers
1k views

Giving Virtual Machines in Xen their own IP Addresses

Installed Xen on a server at home, recently moved it to a data center. Worked fine with DHCP behind my router, with each virtual server and the dom0 getting its own IP address. At the data center, ...
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2answers
1k views

CRITICAL STRUCTURE CORRUPTION on Windows Server 2012 R2

I have a Windows Server 2012 R2 virtual machine; yes with all the updates. Additional software include Microsoft SQL Server 2014 (was 2012 on a previous VM). The web hosting company includes xenpci....
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105 views

xend is not found - Xen 4.5 on Odroid XU3 ARM

I am trying to set up Xen virtualization on Odroid XU3 ARM platform. I have done all steps from http://forum.odroid.com/viewtopic.php?f=98&t=6643 to be able to boot into Odroid XU3 with ...
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2answers
3k views

XenCenter cannot connect to XenServer

I am trying to establish a connection using XenCenter 6.0 to a server where XenServer 6.0 is installed, but it gives me the following error message: Unable to connect to server '192.xxx.xxx.xxx'. ...
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44 views

Acquire XEN guest memory image over network

I am trying to dump a memory image from a XEN guest (Ubuntu 12.04 x64 - domU) in order to analyze it on dom0 (Ubuntu server 12.04 x64) with volatility and find some information about the guest virtual ...
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70 views

How to block network connections between XenServer VMs using Open vSwitch?

I would like to block all network access between user VMs on a XenServer host so that users on each VM are unable to access any other user VM, or to sniff network traffic, no matter what. However I ...
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1answer
2k views

CentOS 7 on XenServer 6.5

I am having problem trying to get CentOS 7 Graphical installer to work on XenServer 6.5 (Service pack 1). I have used CentOS 7 template. Graphical installer does not work, getting blank screen with ...
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2answers
243 views

Slow writes for VM in Xen?

I have a server running Xen and a couple of VMs. I'm trying to set up a RAID array that's dedicated to one of the VMs in particular, which will be used for various storage-intensive purposes. ...
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362 views

Creating a XenServer VM from the Command-line

I have an issue in which I cannot understand how to create a XenServer Virtual Machine from the command-line. I have installed XenServer on an unused Tower unit, and currently SSH into it from my Mac....
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0answers
145 views

Xen based AMI does not boot (/dev/xvda)

Trying to create an AMI Instance Store within a xen based guest (VM: CentOS 6.6, 32 bit, PV). 'ec2-bundle-vol' only accepts /dev/xvda1 as a valid block device. If device entries are modified in /etc/...
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1answer
1k views

Change Xenserver 6.5 Pool Master

I'm looking to change the pool master because my current pool master is having some hardware issues. I've disabled HA and I came across this script to change the pool master to my other server: xe ...
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65 views

How does EC2 signal a reboot to an HVM instance?

What is the exact signal being sent? How can the instance (Linux in this case) handle it?
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416 views

XENSERVER - PCI: Fatal: No config space access function found

We use XenServer to host our VPS and when we tried rebooting the server we get the following error right away PCI: Fatal: No config space access function found We need to edit the grub file for the ...
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1answer
1k views

Xen machine with a DomU router/firewall on a single NIC machine

I've got a machine with a single NIC. I'd like to set it it up like thus: Dom0 listening on 192.168.x.1 and doing nothing but being Dom0 DomU on 192.168.x.2 and external ip assigned by dhcp doing ...
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1answer
252 views

Use graphical DomU (X11 for Linux, regular UI for Windows) from Dom0 without any GUI on Dom0

I am creating a Xen (para)virtualization setup, with two DomU's: a Windows 10 client install, on HVM, and an Linux client install with X11, on PV. Dom0 is a non-graphical Debian install. So far I have ...
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0answers
20 views

If XEN can convert my installed OS to guest OS? [closed]

Need to run multiple OS (Windows 7, Ubuntu 14.04, 12.04). Never use XEN before. Just want to check: Does XEN have to be installed on top of some OS? Can it be installed directory on a fresh computer ...
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1answer
155 views

How to get output 'xentop' or 'xm top' command in centOS

I would like to develop shell script by 'xmtop' or 'xm top' command get output in same format or just show on command line like, top -c, w .
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3answers
530 views

netconsole or serial logging in XenServer DomU

I have some problems with stability of Debian guests in my XenServer hosts. To debug this problem I wanted to use netconsole kernel module, unfortunately, because the Ethernet controller is emulated, ...
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2answers
232 views

How to upgrade Xen with minimal risk and downtime?

I've recently noticed that one of my server is running on a pretty old version of Xen: $ dpkg-query -l | grep xen ii libc6-xen 2.11.3-4 Embedded GNU C ...
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13 views

Determining what type of virtualisation used on VPS/VDS? [duplicate]

I bought VPS/VDS and want to know what virtualization used. I have a root prompt in Debian Linux.
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0answers
16 views

How to check what is the default NIC on a Xen guest?

A VM running on a Xen is getting buggy. Some VM lost their network connection sometimes. I've identified an error on the ping command: $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. ...
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2answers
258 views

Forward Port on Guest Operating system With Libvirt

I am currently running a Xen Hypervisor underneath Ubuntu 14.04. On the host machine I am running a guest VM. From what I understand, In order to be able to receive incoming connections on the ...
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1answer
298 views

How to diagnostic internet access failure on a linux system?

I have a VM running on Xen. The virtual machine was running fine for months and suddently the network access broke down. Dom0 DomU .-------. bridge .-------....
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0answers
81 views

Booting CentOS7 on Xen 3.1.6: upgrading Xen best path forward?

I'm running into problems booting CentOS 7 on Xen 3.1.6: Here is the error: [root@vh1 ~]# xm create vm-app-em5-test Using config file "/etc/xen/vm-app-em5-test". Traceback (most recent call last): ...
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1answer
72 views

convert SLES11 SP1 vmlinuz-3.0.13-0.27-xen to VMware using vmware converter

I am looking to convert a XEN VM (SLES11 SP1 kernel vmlinuz-3.0.13-0.27-xen) to a VMware guest using the VMware converter tool. The VMware tool tell me conversion went fine. 100% OK, however, when I ...
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How are the Debian/Ubuntu Xen netinstall images built?

Xen/XenServer has this nice feature where you can select a Debian or Ubuntu template and point it at some mirror and it will go and download a minimal kernel and initrd which will be used to bootstrap ...
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2answers
107 views

Multi IPs on a Xen VM with bridging

While I am fairly new to XEN (running under Ubuntu 14.04) I've not had any real issues until now. I have set my networking using bridging and that has worked well for many different machines until ...
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1answer
22 views

Checking for disk failures and issues in a VM

If you host with a provider who runs a RAID 10 or another RAID based system and your in a VM. Are you able to check for disk failures or RAID failures from within the VM or does it require host based ...
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76 views

Routing issues with bonded VLAN trunk bridged to Xen dom0 on CentOS

I am setting up a new dom0 which has a LACP bond. Connectivity is fine between the network, dom0 and domU's without the trunk enabled. Once I start tagging traffic on the switch and add the ...
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2answers
181 views

Setting up emergency console access with xen

On Gandi (or other providers) you can activate an emergency console to your VM. It binds a SSH channel to a temporary IP and port. I have my own server running on xen. I would like to implement an ...