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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How to expose DomU's to router network?

I currently have a server connected to a router through a single NIC. The server has a running XEN setup with several DomU's. Everything seems to work fine, I can access internet from both Dom0 and ...
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1answer
1k 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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2answers
2k views

Ubuntu on VPS becomes unresponsive: BUG: soft lockup - CPU#0 stuck for 22s

We have a VPS running Ubuntu, on Xen. The problem is this, about once a day, for about 20-50 minutes, at a random time, the server becomes completely unresponsive to the outside world. After this ...
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3answers
878 views

Which hypervisor to play nice with docker.io

I have been running several different virtualisation servers, (ESXi, XenServer, Proxmox/KVM) in the past. I am now in a position where I need to set up a new virtualisation environment that is ...
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1answer
19 views

How do I increase the swap size on a xen guest machine using xm?

I'm attempting to increase the amount of swap on a xen guest machine. At first I thought it'd be similar to increasing the hard drive space, which I do like this: cd /srv/xen/domains/$host/ xm ...
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3answers
852 views

All Xen domU LVM volumes corrupt after reboot

I'm running a Debian Squeeze dom0, and after rebooting it all 7 of my domUs have data corruption. Each is setup as ext3 partition directly on a separate lvm2 volume. None of the lvm volumes will ...
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1answer
890 views

Error while creating VM using virt-manager on Xen

After a great struggle I got my XEN installed now I am using virt-manager and trying to create a VM. Since my H/W doesnt support full Virtualization using the Para Virtualization installation over ...
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0answers
6 views

Transfer VM without shutting it down? [migrated]

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 ...
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2answers
629 views

xl create doesn't bring up console

I've tryed to run VM in Xen 4.2 using xl command (for what I get this should be standard toolstack, while xm is deprecated). In this case I've the following configuration file kernel = ...
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1answer
1k views

Whole block device named xvda1, xvda2 instead of xvda, xvdb

I am working on a VM that was set up for me in a public cloud. It's running under the Xen hypervisor in paravirtualized mode and has two virtual disks. So I expect the virtual disk block devices to be ...
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1answer
929 views

Kernel parameters mem and dom0_mem in XenServer 6.1

We are running XenServer 6.1 in production, and recently had OOM-killer fire and eventually take down one of our blades. I noticed that in the kernel logs from the oom-killer instance that it seemed ...
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2answers
533 views

Grub can't find Xen multiboot file

I am running Debian Wheezy on a software RAID 0 with LVM. I'm trying to get Xen to work but grub refuses to boot in it. I installed Xen by following the instructions here: http://wiki.debian.org/Xen ...
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2answers
863 views

Xen Remus setup

Currently, I'm running the IT for a small organization, and we just purchased a new server to replace our aging Dell poweredge. As the Dell isn't so bad as to be junk, I was hoping to set up Xen on ...
2
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1answer
975 views

Ubuntu upstart hangs on interactive start & stop

How do I get Ubuntu upstart to not hang on interactive start & stop? I have created many upstart scripts that work fine during init, but often hang when I enter them at the console. If I CTRL+C ...
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1answer
3k views

Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

I installed XEN on Ubuntu 8.04 using this tutorial but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not ...
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1answer
1k views

Can I use XenServer GPU Pass-Through without XenDesktop?

XenServer documentation only covers using GPU Pass-Through ("vGPU") to run XenDesktop's "HDX 3D Pro Graphics." XenServer GPU Pass-Through cannot be used with the XenCenter VNC console and it does not ...
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1answer
2k views

Xenserver 5.6 SR_BACKEND_FAILURE_47 no such volume group, but it is there

I've looked everywhere (Google, here, a bunch of other sites), and while I have found people with similar problems, I couldn't find a single one with a solution to this. Last night our xenserver 5.6 ...
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1answer
1k views

Ubuntu 14.04 VPS won't boot the latest kernel on XEN

I have a XEN VPS and it's been running Ubuntu for some years now. AUtomatic security upgrades are on and I've manually upgraded it continously and also done releas-upgrades whenever there's been a new ...
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1answer
44 views

Xen 4.4 mixed routed/bridged network vm does not work

I have updated one of my servers from Xen 4.1.4 (Debian squeeze) to Xen 4.4.1 (Debian jessie). As xend/xm is deprecated I would like to use the xl tool kit with Xen 4.4.1. But now I have issues with ...
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3answers
1k views

setting up Ubuntu 10.10 as paravirtualized guest in Xen on RHEL5 host - what kernel?

I've discovered the tool ubuntu-vm-builder, which I've installed and then invoked on an Ubuntu workstation as: sudo vmbuilder xen ubuntu --suite maverick --flavour virtual --arch amd64 --mem=512 ...
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1answer
1k views

xen Dom0 network setup on ubuntu 12.04.1 LTS

I read a lot of tutorials (or at least try to be) but none is able to explain well how to configure networks for xen host. my Dom0 has two interfaces eth0 (real interfaces) and virbr0 (I guess was ...
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2answers
2k views

CentOS 6 Xen guest fails to boot after 'yum update'. Kernel?

I Seem to be having an issue with a Xen guest not booting after a yum update. DomU Configuration: #kernel = '/boot/solus-vmlinuz' #ramdisk = '/boot/solus-initrd.img' bootloader = ...
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1answer
12 views

Adding “VMs by Software Product” to XenCenter's view menu

XenCenter has a "VMs by Operating System" dropdown menu. I would like to have a similar menu "VMs by Software Product" which displays VMs grouped by certain software products and releases. Each of ...
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2answers
4k 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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1answer
822 views

Ubuntu 10.04 (LTS) DomU on Debian Wheezy Dom0 Xen 4

I have been forced to move from a Centos Dom0 xen 3 Centos + Ubuntu Lucid DomUs To Debian Wheezy Dom0 Xen 4 Ubuntu Lucid DomUs However although I can create new DomUs on wheezy I cannot ...
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0answers
21 views

What is causing `skb rides the rocket` errors?

On one of our busy (virtual) Debian 6 servers we are seeing a lot of messages in the syslog like this: kernel: xen_netfront: xennet: skb rides the rocket: 19 slots We are seeing some connectivity ...
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23 views

Difficulty sharing physical ethernet device with Xen 4.4

I have a virtualized PowerEdge T320, with a Ubuntu Server 14.04 running Xen 4.4 as host, that I use at my lab to do scientific computations (I'm the admin of the machine). This server has two physical ...
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1answer
1k views

Cannot connect to Xen domU via VNC if X isn't installed on domU

I'm trying to build a Xen domU that can be connected through the Xen's VNC server. Below is the template (actually it's generated by OpenNebula): name = 'one-153' #O CPU_CREDITS = 256 memory = '128' ...
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0answers
51 views

External USB drive on xen windows guest

I have an external USB 2Tb drive I'm trying to use with a xen guest. Xen Center 6.1 sees the drive in the removable storage repository and I can assign it to a guest. But the guest (tested ...
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1answer
73 views

Openstack Single Physical Network

I am trying to deploy openstack grizzly on a 12 node cluster. I want to use the xen hypervisor. I currently have xenserver installed, and I have 3 virtual machines running Ubuntu 12.04 to use for the ...
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2answers
324 views

Linux xen directly boot windows domu?

I have the following situation: got a new notebook with Windows7 pre-installed (sda1 with boot partition, actual OS in sda2), one physical disk (sda) created an extended partition (sda3), inside ...
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7 views

xen routed setup, no internet connectivity in domU

My server has 4 public ips, but I have 5 vms running, the vm which doesn't have an own public ip should be able to reach the internet and all other vms over private interfaces. I configured a private ...
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0answers
22 views

Using Xenlight with libvirt in debian, Unable to configure listen with remote libvirt

I am using libvirt 1.2.0 with xen hypervisor 4.4 in debian server. I am facing error when I try to connect remotely with other libvirt using TCP or TLS. I couldnt make libvirt to listen to the port. I ...
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2answers
2k views

Running KVM/XEN/Hyper-V VMs from a RAM disk, is this possible? Practical?

Currently I'm using ESX (v3 and v4) to test a scripted OS (Windows 2003) and application install DVD. The DVD ISO (8GB) is mounted on a 1Gbps NFS datastore and the VMDK's (20GB) are on an SSD mounted ...
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0answers
31 views

Xen VM could not be installed

I have rented a server from Hetzner. I have installed Xen on Dom 0 - Centos 6.5. I couldn't create a Dom1 Centos 6.5 VM. The Error I see is 'Unable to retrieve 'the link for centos image' while ...
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22 views

fdisk -l do not detect device accessed using iscsi o XEN virtual machine

I am experiancing an issue in accessing the iscsi target in VMs created on XEN hypervisor. I have used Suse 11 SP3 to configure this. After discovering the iscsi targets from VM , I am able to view ...
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4answers
2k views

Boot Clonezilla with XenServer VM

I'm currently trying to move a RHEL based server to Citrix XenServer (5.6) VM. My plan was to use Clonezilla LIVE CD, which i have had good suceess with to clone physical to physical before. So i ...
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1answer
344 views

Install xenserver on iscsi target

Is is know that Xen Server is based on CentOS, and it is fact that CentOS can be installed on an ISCSI target flawlessly, but I wanted to install Xen server on an ISCSI target I couldn't find a way. ...
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1answer
47 views

Can no longer add VMs on Xen/DRBD/Pacemaker Cluster

OS: Debian 7.3 & 7.6 Problem: Every attempt to manipulate (create, migrate or even list) the VM's with virsh causes this "Failed to get host power capabilities" warning. I manage a standalone ...
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1answer
40 views

How to know the real amount of RAM in a VPS

I've been told that a VPS's RAM can be manipulated (oversold) by VPS providers. I know I can always buy a VPS from a reputable company, but, really, how can one make sure the allocated memory is the ...
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3answers
4k views

use LXC under heavier virtualization (Xen, KVM,Hyper-V,VMVare)

Is it possible to use LXC under heavier virtualization (Xen DomU,KVM,Hyper-V,VMVare) ? I would like to use it as security (isolation) tool, the ability to limit resource consumption is not priority ...
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1answer
493 views

Xen: can't get Dom0 and the DomUs to ping eachother

We have installed a Xen (4.1) configuration and can't get Dom0 and the DomUs to communicate (ping eachother). The DomUs are able to ping eachother but not Dom0, and Dom0 cannot ping the DomUs. We ...
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0answers
38 views

How to boot xen dom0 with UEFI support?

I boot my system with EFI+grub2. If I boot into a normal system, I can modprobe efivars and view all the efi variables. But if I boot into xen, I cannot see the efi variables from my dom0. I build my ...
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115 views

Cannot create windows HVM with SDL in xen 4.4.1

I want to create a win HVM, and set sdl=1. I was able to do so. But after I upgraded to xen-4.4.1, I got this error libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 4 device model: ...
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24 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
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1answer
39 views

Xen cannot see all the LUNs in ISCSI HP StorageWorks MSA2312i Dual Controller Modular Smart Array

I have a HP StorageWorks MSA2312i Dual Controller Modular Smart Array and a second enclosure. I have four vdisks: vd01 (RAID5) (Current Owner A) vd02 (RAID5) (Current Owner B) vd03 (RAID10) ...
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0answers
68 views

VGA passthrough grabs wrong device

I've succesfully set up VGA passthrough with a Quadro 4000 and everything is working great. My motherboard is a SuperMicro H8DGi/F with 2x opterons 6140, an onboard Matrox G200 and a discrete Quadro ...
0
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1answer
125 views

host only network xen 4.4

I have one IP address (ipv4) and I am trying to install a domU (debian stable) on a dom0 which runs the latest xen 4.4.1 on debian testing. I have created xenbr0 bridge and it is mapped to my eth0. ...
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1answer
437 views

Xen guest - cannot get network connection beyond the host

I've just installed a XenServer 6.1. It came with a standard configuration, network 0 connected to NIC 0. I created a VM but I can't reach any network beyond the host. From the VM (172.18.32.20), I ...
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2answers
8k views

How to get more I/O performance from Citrix XenServer?

I have a Citrix XenServer 6.1 installed on a HP Server (1x Intel Xeon E5630 @ 2.53GHz (4 cores, 8 threads, RAM: 752MB for dom0 and 55286MB for the guests). The server has 2 scsi mirrored disks and is ...